2019/02/10

[mowatermelon]

$ node --v8-options | findstr harmony

SSE3=1 SSSE3=1 SSE4_1=1 SAHF=1 AVX=1 FMA3=0 BMI1=0 BMI2=0 LZCNT=0 POPCNT=1 ATOM=0
Synopsis:
  shell [options] [--shell] [<file>...]
  d8 [options] [-e <string>] [--shell] [[--module] <file>...]

  -e        execute a string in V8
  --shell   run an interactive JavaScript shell
  --module  execute a file as a JavaScript module

Options:
  --experimental-extras (enable code compiled in via v8_experimental_extra_library_files)
        type: bool  default: false
  --use-strict (enforce strict mode)
        type: bool  default: false
  --es-staging (enable test-worthy harmony features (for internal use only))
        type: bool  default: false
  --harmony (enable all completed harmony features)
        type: bool  default: false
  --harmony-shipping (enable all shipped harmony features)
        type: bool  default: true
  --harmony-do-expressions (enable "harmony do-expressions" (in progress))
        type: bool  default: false
  --harmony-class-fields (enable "harmony fields in class literals" (in progress))
        type: bool  default: false
  --harmony-static-fields (enable "harmony static fields in class literals" (in progress))
        type: bool  default: false
  --harmony-array-flatten (enable "harmony Array.prototype.flat{ten,Map}" (in progress))
        type: bool  default: false
  --harmony-locale (enable "Intl.Locale" (in progress))
        type: bool  default: false
  --harmony-public-fields (enable "harmony public fields in class literals")
        type: bool  default: false
  --harmony-private-fields (enable "harmony private fields in class literals")
        type: bool  default: false
  --harmony-numeric-separator (enable "harmony numeric separator between digits")
        type: bool  default: false
  --harmony-string-matchall (enable "harmony String.prototype.matchAll")
        type: bool  default: false
  --harmony-string-trimming (enable "harmony String.prototype.trim{Start,End}")
        type: bool  default: true
  --harmony-sharedarraybuffer (enable "harmony sharedarraybuffer")
        type: bool  default: true
  --harmony-regexp-named-captures (enable "harmony regexp named captures")
        type: bool  default: true
  --harmony-regexp-property (enable "harmony Unicode regexp property classes")
        type: bool  default: true
  --harmony-function-tostring (enable "harmony Function.prototype.toString")
        type: bool  default: true
  --harmony-promise-finally (enable "harmony Promise.prototype.finally")
        type: bool  default: true
  --harmony-optional-catch-binding (enable "allow omitting binding in catch blocks")
        type: bool  default: true
  --harmony-import-meta (enable "harmony import.meta property")
        type: bool  default: true
  --harmony-bigint (enable "harmony arbitrary precision integers")
        type: bool  default: true
  --harmony-dynamic-import (enable "harmony dynamic import")
        type: bool  default: true
  --harmony-array-prototype-values (enable "harmony Array.prototype.values")
        type: bool  default: true
  --icu-timezone-data (get information about timezones from ICU)
        type: bool  default: true
  --future (Implies all staged features that we want to ship in the not-too-far future)
        type: bool  default: false
  --allocation-site-pretenuring (pretenure with allocation sites)
        type: bool  default: true
  --page-promotion (promote pages based on utilization)
        type: bool  default: true
  --page-promotion-threshold (min percentage of live bytes on a page to enable fast evacuation)
        type: int  default: 70
  --trace-pretenuring (trace pretenuring decisions of HAllocate instructions)
        type: bool  default: false
  --trace-pretenuring-statistics (trace allocation site pretenuring statistics)
        type: bool  default: false
  --track-fields (track fields with only smi values)
        type: bool  default: true
  --track-double-fields (track fields with double values)
        type: bool  default: true
  --track-heap-object-fields (track fields with heap values)
        type: bool  default: true
  --track-computed-fields (track computed boilerplate fields)
        type: bool  default: true
  --track-field-types (track field types)
        type: bool  default: true
  --trace-block-coverage (trace collected block coverage information)
        type: bool  default: false
  --feedback-normalization (feed back normalization to constructors)
        type: bool  default: false
  --optimize-for-size (Enables optimizations which favor memory size over execution speed)
        type: bool  default: false
  --unbox-double-arrays (automatically unbox arrays of doubles)
        type: bool  default: true
  --interrupt-budget (interrupt budget which should be used for the profiler counter)
        type: int  default: 147456
  --ignition-elide-noneffectful-bytecodes (elide bytecodes which won't have any external effect)
        type: bool  default: true
  --ignition-reo (use ignition register equivalence optimizer)
        type: bool  default: true
  --ignition-filter-expression-positions (filter expression positions before the bytecode pipeline)
        type: bool  default: true
  --ignition-share-named-property-feedback (share feedback slots when loading the same named property from the same object)
        type: bool  default: false
  --print-bytecode (print bytecode generated by ignition interpreter)
        type: bool  default: false
  --print-bytecode-filter (filter for selecting which functions to print bytecode)
        type: string  default: *
  --trace-ignition-codegen (trace the codegen of ignition interpreter bytecode handlers)
        type: bool  default: false
  --trace-ignition-dispatches (traces the dispatches to bytecode handlers by the ignition interpreter)
        type: bool  default: false
  --trace-ignition-dispatches-output-file (the file to which the bytecode handler dispatch table is written (by default, the table is not written to a file))
        type: string  default: nullptr
  --fast-math (faster (but maybe less accurate) math functions)
        type: bool  default: true
  --trace-track-allocation-sites (trace the tracking of allocation sites)
        type: bool  default: false
  --trace-migration (trace object migration)
        type: bool  default: false
  --trace-generalization (trace map generalization)
        type: bool  default: false
  --concurrent-recompilation (optimizing hot functions asynchronously on a separate thread)
        type: bool  default: true
  --trace-concurrent-recompilation (track concurrent recompilation)
        type: bool  default: false
  --concurrent-recompilation-queue-length (the length of the concurrent compilation queue)
        type: int  default: 8
  --concurrent-recompilation-delay (artificial compilation delay in ms)
        type: int  default: 0
  --block-concurrent-recompilation (block queued jobs until released)
        type: bool  default: false
  --stress-runs (number of stress runs)
        type: int  default: 0
  --deopt-every-n-times (deoptimize every n times a deopt point is passed)
        type: int  default: 0
  --print-deopt-stress (print number of possible deopt points)
        type: bool  default: false
  --turbo-sp-frame-access (use stack pointer-relative access to frame wherever possible)
        type: bool  default: false
  --turbo-preprocess-ranges (run pre-register allocation heuristics)
        type: bool  default: true
  --turbo-filter (optimization filter for TurboFan compiler)
        type: string  default: *
  --trace-turbo (trace generated TurboFan IR)
        type: bool  default: false
  --trace-turbo-path (directory to dump generated TurboFan IR to)
        type: string  default: nullptr
  --trace-turbo-filter (filter for tracing turbofan compilation)
        type: string  default: *
  --trace-turbo-graph (trace generated TurboFan graphs)
        type: bool  default: false
  --trace-turbo-scheduled (trace TurboFan IR with schedule)
        type: bool  default: false
  --trace-turbo-cfg-file (trace turbo cfg graph (for C1 visualizer) to a given file name)
        type: string  default: nullptr
  --trace-turbo-types (trace TurboFan's types)
        type: bool  default: true
  --trace-turbo-scheduler (trace TurboFan's scheduler)
        type: bool  default: false
  --trace-turbo-reduction (trace TurboFan's various reducers)
        type: bool  default: false
  --trace-turbo-trimming (trace TurboFan's graph trimmer)
        type: bool  default: false
  --trace-turbo-jt (trace TurboFan's jump threading)
        type: bool  default: false
  --trace-turbo-ceq (trace TurboFan's control equivalence)
        type: bool  default: false
  --trace-turbo-loop (trace TurboFan's loop optimizations)
        type: bool  default: false
  --trace-alloc (trace register allocator)
        type: bool  default: false
  --trace-all-uses (trace all use positions)
        type: bool  default: false
  --trace-representation (trace representation types)
        type: bool  default: false
  --turbo-verify (verify TurboFan graphs at each phase)
        type: bool  default: false
  --turbo-verify-machine-graph (verify TurboFan machine graph before instruction selection)
        type: string  default: nullptr
  --trace-verify-csa (trace code stubs verification)
        type: bool  default: false
  --csa-trap-on-node (trigger break point when a node with given id is created in given stub. The format is: StubName,NodeId)
        type: string  default: nullptr
  --turbo-stats (print TurboFan statistics)
        type: bool  default: false
  --turbo-stats-nvp (print TurboFan statistics in machine-readable format)
        type: bool  default: false
  --turbo-splitting (split nodes during scheduling in TurboFan)
        type: bool  default: true
  --function-context-specialization (enable function context specialization in TurboFan)
        type: bool  default: false
  --turbo-inlining (enable inlining in TurboFan)
        type: bool  default: true
  --max-inlined-bytecode-size (maximum size of bytecode for a single inlining)
        type: int  default: 500
  --max-inlined-bytecode-size-cumulative (maximum cumulative size of bytecode considered for inlining)
        type: int  default: 1000
  --max-inlined-bytecode-size-absolute (maximum cumulative size of bytecode considered for inlining)
        type: int  default: 5000
  --reserve-inline-budget-scale-factor (maximum cumulative size of bytecode considered for inlining)
        type: float  default: 1.2
  --max-inlined-bytecode-size-small (maximum size of bytecode considered for small function inlining)
        type: int  default: 30
  --min-inlining-frequency (minimum frequency for inlining)
        type: float  default: 0.15
  --polymorphic-inlining (polymorphic inlining)
        type: bool  default: true
  --stress-inline (set high thresholds for inlining to inline as much as possible)
        type: bool  default: false
  --trace-turbo-inlining (trace TurboFan inlining)
        type: bool  default: false
  --inline-accessors (inline JavaScript accessors)
        type: bool  default: true
  --inline-into-try (inline into try blocks)
        type: bool  default: true
  --turbo-inline-array-builtins (inline array builtins in TurboFan code)
        type: bool  default: true
  --use-osr (use on-stack replacement)
        type: bool  default: true
  --trace-osr (trace on-stack replacement)
        type: bool  default: false
  --analyze-environment-liveness (analyze liveness of environment slots and zap dead values)
        type: bool  default: true
  --trace-environment-liveness (trace liveness of local variable slots)
        type: bool  default: false
  --turbo-load-elimination (enable load elimination in TurboFan)
        type: bool  default: true
  --trace-turbo-load-elimination (trace TurboFan load elimination)
        type: bool  default: false
  --turbo-profiling (enable profiling in TurboFan)
        type: bool  default: false
  --turbo-verify-allocation (verify register allocation in TurboFan)
        type: bool  default: false
  --turbo-move-optimization (optimize gap moves in TurboFan)
        type: bool  default: true
  --turbo-jt (enable jump threading in TurboFan)
        type: bool  default: true
  --turbo-loop-peeling (Turbofan loop peeling)
        type: bool  default: true
  --turbo-loop-variable (Turbofan loop variable optimization)
        type: bool  default: true
  --turbo-cf-optimization (optimize control flow in TurboFan)
        type: bool  default: true
  --turbo-escape (enable escape analysis)
        type: bool  default: true
  --turbo-allocation-folding (Turbofan allocation folding)
        type: bool  default: true
  --turbo-instruction-scheduling (enable instruction scheduling in TurboFan)
        type: bool  default: false
  --turbo-stress-instruction-scheduling (randomly schedule instructions to stress dependency tracking)
        type: bool  default: false
  --turbo-store-elimination (enable store-store elimination in TurboFan)
        type: bool  default: true
  --trace-store-elimination (trace store elimination)
        type: bool  default: false
  --turbo-rewrite-far-jumps (rewrite far to near jumps (ia32,x64))
        type: bool  default: true
  --experimental-inline-promise-constructor (inline the Promise constructor in TurboFan)
        type: bool  default: true
  --untrusted-code-mitigations (Enable mitigations for executing untrusted code)
        type: bool  default: false
  --branch-load-poisoning (Mask loads with branch conditions.)
        type: bool  default: false
  --minimal (simplifies execution model to make porting easier (e.g. always use Ignition, never optimize))
        type: bool  default: false
  --expose-wasm (expose wasm interface to JavaScript)
        type: bool  default: true
  --assume-asmjs-origin (force wasm decoder to assume input is internal asm-wasm format)
        type: bool  default: false
  --wasm-disable-structured-cloning (disable wasm structured cloning)
        type: bool  default: false
  --wasm-num-compilation-tasks (number of parallel compilation tasks for wasm)
        type: int  default: 10
  --wasm-write-protect-code-memory (write protect code memory on the wasm native heap)
        type: bool  default: false
  --wasm-trace-serialization (trace serialization/deserialization)
        type: bool  default: false
  --wasm-async-compilation (enable actual asynchronous compilation for WebAssembly.compile)
        type: bool  default: true
  --wasm-test-streaming (use streaming compilation instead of async compilation for tests)
        type: bool  default: false
  --wasm-max-mem-pages (maximum memory size of a wasm instance)
        type: uint  default: 32767
  --wasm-max-table-size (maximum table size of a wasm instance)
        type: uint  default: 10000000
  --wasm-tier-up (enable basic tiering up to the optimizing compiler)
        type: bool  default: false
  --trace-wasm-ast-start (start function for wasm AST trace (inclusive))
        type: int  default: 0
  --trace-wasm-ast-end (end function for wasm AST trace (exclusive))
        type: int  default: 0
  --liftoff (enable liftoff, the experimental wasm baseline compiler)
        type: bool  default: false
  --skip-compiling-wasm-funcs (start compiling at function N)
        type: uint  default: 0
  --wasm-trace-memory (print all memory updates performed in wasm code)
        type: bool  default: false
  --validate-asm (validate asm.js modules before compiling)
        type: bool  default: true
  --suppress-asm-messages (don't emit asm.js related messages (for golden file testing))
        type: bool  default: false
  --trace-asm-time (log asm.js timing info to the console)
        type: bool  default: false
  --trace-asm-scanner (log tokens encountered by asm.js scanner)
        type: bool  default: false
  --trace-asm-parser (verbose logging of asm.js parse failures)
        type: bool  default: false
  --stress-validate-asm (try to validate everything as asm.js)
        type: bool  default: false
  --dump-wasm-module-path (directory to dump wasm modules to)
        type: string  default: nullptr
  --experimental-wasm-simd (enable prototype simd opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-eh (enable prototype exception handling opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-mv (enable prototype multi-value support for wasm)
        type: bool  default: false
  --experimental-wasm-threads (enable prototype threads for wasm)
        type: bool  default: false
  --experimental-wasm-sat-f2i-conversions (enable non-trapping float-to-int conversions for wasm)
        type: bool  default: false
  --experimental-wasm-se (enable prototype sign extension opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-anyref (enable prototype anyref support for wasm)
        type: bool  default: false
  --experimental-wasm-mut-global (enable prototype import/export mutable global support for wasm)
        type: bool  default: false
  --wasm-opt (enable wasm optimization)
        type: bool  default: false
  --wasm-no-bounds-checks (disable bounds checks (performance testing only))
        type: bool  default: false
  --wasm-no-stack-checks (disable stack checks (performance testing only))
        type: bool  default: false
  --wasm-trap-handler (use signal handlers to catch out of bounds memory access in wasm (currently Linux x86_64 only))
        type: bool  default: true
  --wasm-fuzzer-gen-test (Generate a test case when running a wasm fuzzer)
        type: bool  default: false
  --print-wasm-code (Print WebAssembly code)
        type: bool  default: false
  --wasm-interpret-all (Execute all wasm code in the wasm interpreter)
        type: bool  default: false
  --asm-wasm-lazy-compilation (enable lazy compilation for asm-wasm modules)
        type: bool  default: false
  --wasm-lazy-compilation (enable lazy compilation for all wasm modules)
        type: bool  default: false
  --frame-count (number of stack frames inspected by the profiler)
        type: int  default: 1
  --type-info-threshold (percentage of ICs that must have type info to allow optimization)
        type: int  default: 25
  --stress-sampling-allocation-profiler (Enables sampling allocation profiler with X as a sample interval)
        type: int  default: 0
  --min-semi-space-size (min size of a semi-space (in MBytes), the new space consists of two semi-spaces)
        type: size_t  default: 0
  --max-semi-space-size (max size of a semi-space (in MBytes), the new space consists of two semi-spaces)
        type: size_t  default: 0
  --semi-space-growth-factor (factor by which to grow the new space)
        type: int  default: 2
  --experimental-new-space-growth-heuristic (Grow the new space based on the percentage of survivors instead of their absolute value.)
        type: bool  default: false
  --max-old-space-size (max size of the old space (in Mbytes))
        type: size_t  default: 0
  --initial-old-space-size (initial old space size (in Mbytes))
        type: size_t  default: 0
  --gc-global (always perform global GCs)
        type: bool  default: false
  --random-gc-interval (Collect garbage after random(0, X) allocations. It overrides gc_interval.)
        type: int  default: 0
  --gc-interval (garbage collect after <n> allocations)
        type: int  default: -1
  --retain-maps-for-n-gc (keeps maps alive for <n> old space garbage collections)
        type: int  default: 2
  --trace-gc (print one trace line following each garbage collection)
        type: bool  default: false
  --trace-gc-nvp (print one detailed trace line in name=value format after each garbage collection)
        type: bool  default: false
  --trace-gc-ignore-scavenger (do not print trace line after scavenger collection)
        type: bool  default: false
  --trace-idle-notification (print one trace line following each idle notification)
        type: bool  default: false
  --trace-idle-notification-verbose (prints the heap state used by the idle notification)
        type: bool  default: false
  --trace-gc-verbose (print more details following each garbage collection)
        type: bool  default: false
  --trace-allocation-stack-interval (print stack trace after <n> free-list allocations)
        type: int  default: -1
  --trace-duplicate-threshold-kb (print duplicate objects in the heap if their size is more than given threshold)
        type: int  default: 0
  --trace-fragmentation (report fragmentation for old space)
        type: bool  default: false
  --trace-fragmentation-verbose (report fragmentation for old space (detailed))
        type: bool  default: false
  --trace-evacuation (report evacuation statistics)
        type: bool  default: false
  --trace-mutator-utilization (print mutator utilization, allocation speed, gc speed)
        type: bool  default: false
  --incremental-marking (use incremental marking)
        type: bool  default: true
  --incremental-marking-wrappers (use incremental marking for marking wrappers)
        type: bool  default: true
  --trace-unmapper (Trace the unmapping)
        type: bool  default: false
  --parallel-scavenge (parallel scavenge)
        type: bool  default: true
  --trace-parallel-scavenge (trace parallel scavenge)
        type: bool  default: false
  --write-protect-code-memory (write protect code memory)
        type: bool  default: true
  --concurrent-marking (use concurrent marking)
        type: bool  default: true
  --parallel-marking (use parallel marking in atomic pause)
        type: bool  default: true
  --trace-concurrent-marking (trace concurrent marking)
        type: bool  default: false
  --black-allocation (use black allocation)
        type: bool  default: true
  --concurrent-store-buffer (use concurrent store buffer processing)
        type: bool  default: true
  --concurrent-sweeping (use concurrent sweeping)
        type: bool  default: true
  --parallel-compaction (use parallel compaction)
        type: bool  default: true
  --parallel-pointer-update (use parallel pointer update during compaction)
        type: bool  default: true
  --detect-ineffective-gcs-near-heap-limit (trigger out-of-memory failure to avoid GC storm near heap limit)
        type: bool  default: true
  --trace-incremental-marking (trace progress of the incremental marking)
        type: bool  default: false
  --trace-stress-marking (trace stress marking progress)
        type: bool  default: false
  --trace-stress-scavenge (trace stress scavenge progress)
        type: bool  default: false
  --track-gc-object-stats (track object counts and memory usage)
        type: bool  default: false
  --trace-gc-object-stats (trace object counts and memory usage)
        type: bool  default: false
  --trace-zone-stats (trace zone memory usage)
        type: bool  default: false
  --track-retaining-path (enable support for tracking retaining path)
        type: bool  default: false
  --concurrent-array-buffer-freeing (free array buffer allocations on a background thread)
        type: bool  default: true
  --gc-stats (Used by tracing internally to enable gc statistics)
        type: int  default: 0
  --track-detached-contexts (track native contexts that are expected to be garbage collected)
        type: bool  default: true
  --trace-detached-contexts (trace native contexts that are expected to be garbage collected)
        type: bool  default: false
  --move-object-start (enable moving of object starts)
        type: bool  default: true
  --memory-reducer (use memory reducer)
        type: bool  default: true
  --heap-growing-percent (specifies heap growing factor as (1 + heap_growing_percent/100))
        type: int  default: 0
  --v8-os-page-size (override OS page size (in KBytes))
        type: int  default: 0
  --always-compact (Perform compaction on every full GC)
        type: bool  default: false
  --never-compact (Never perform compaction on full GC - testing only)
        type: bool  default: false
  --compact-code-space (Compact code space on full collections)
        type: bool  default: true
  --use-marking-progress-bar (Use a progress bar to scan large objects in increments when incremental marking is active.)
        type: bool  default: true
  --force-marking-deque-overflows (force overflows of marking deque by reducing it's size to 64 words)
        type: bool  default: false
  --stress-compaction (stress the GC compactor to flush out bugs (implies --force_marking_deque_overflows))
        type: bool  default: false
  --stress-compaction-random (Stress GC compaction by selecting random percent of pages as evacuation candidates. It overrides stress_compaction.)
        type: bool  default: false
  --stress-incremental-marking (force incremental marking for small heaps and run it more often)
        type: bool  default: false
  --fuzzer-gc-analysis (prints number of allocations and enables analysis mode for gc fuzz testing, e.g. --stress-marking, --stress-scavenge)
        type: bool  default: false
  --stress-marking (force marking at random points between 0 and X (inclusive) percent of the regular marking start limit)
        type: int  default: 0
  --stress-scavenge (force scavenge at random points between 0 and X (inclusive) percent of the new space capacity)
        type: int  default: 0
  --disable-abortjs (disables AbortJS runtime function)
        type: bool  default: false
  --manual-evacuation-candidates-selection (Test mode only flag. It allows an unit test to select evacuation candidates pages (requires --stress_compaction).)
        type: bool  default: false
  --fast-promotion-new-space (fast promote new space on high survival rates)
        type: bool  default: false
  --debug-code (generate extra code (assertions) for debugging)
        type: bool  default: false
  --code-comments (emit comments in code disassembly; for more readable source positions you should add --no-concurrent_recompilation)
        type: bool  default: false
  --enable-sse3 (enable use of SSE3 instructions if available)
        type: bool  default: true
  --enable-ssse3 (enable use of SSSE3 instructions if available)
        type: bool  default: true
  --enable-sse4-1 (enable use of SSE4.1 instructions if available)
        type: bool  default: true
  --enable-sahf (enable use of SAHF instruction if available (X64 only))
        type: bool  default: true
  --enable-avx (enable use of AVX instructions if available)
        type: bool  default: true
  --enable-fma3 (enable use of FMA3 instructions if available)
        type: bool  default: true
  --enable-bmi1 (enable use of BMI1 instructions if available)
        type: bool  default: true
  --enable-bmi2 (enable use of BMI2 instructions if available)
        type: bool  default: true
  --enable-lzcnt (enable use of LZCNT instruction if available)
        type: bool  default: true
  --enable-popcnt (enable use of POPCNT instruction if available)
        type: bool  default: true
  --arm-arch (generate instructions for the selected ARM architecture if available: armv6, armv7, armv7+sudiv or armv8)
        type: string  default: armv8
  --enable-vldr-imm (enable use of constant pools for double immediate (ARM only))
        type: bool  default: false
  --force-long-branches (force all emitted branches to be in long mode (MIPS/PPC only))
        type: bool  default: false
  --mcpu (enable optimization for specific cpu)
        type: string  default: auto
  --enable-armv7 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-vfp3 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-32dregs (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-neon (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-sudiv (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-armv8 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-regexp-unaligned-accesses (enable unaligned accesses for the regexp engine)
        type: bool  default: true
  --script-streaming (enable parsing on background)
        type: bool  default: true
  --disable-old-api-accessors (Disable old-style API accessors whose setters trigger through the prototype chain)
        type: bool  default: false
  --expose-natives-as (expose natives in global object)
        type: string  default: nullptr
  --expose-free-buffer (expose freeBuffer extension)
        type: bool  default: false
  --expose-gc (expose gc extension)
        type: bool  default: false
  --expose-gc-as (expose gc extension under the specified name)
        type: string  default: nullptr
  --expose-externalize-string (expose externalize string extension)
        type: bool  default: false
  --expose-trigger-failure (expose trigger-failure extension)
        type: bool  default: false
  --stack-trace-limit (number of stack frames to capture)
        type: int  default: 10
  --builtins-in-stack-traces (show built-in functions in stack traces)
        type: bool  default: false
  --enable-experimental-builtins (enable new csa-based experimental builtins)
        type: bool  default: false
  --disallow-code-generation-from-strings (disallow eval and friends)
        type: bool  default: false
  --allow-unsafe-function-constructor (allow invoking the function constructor without security checks)
        type: bool  default: false
  --force-slow-path (always take the slow path for builtins)
        type: bool  default: false
  --inline-new (use fast inline allocation)
        type: bool  default: true
  --trace (trace function calls)
        type: bool  default: false
  --lazy (use lazy compilation)
        type: bool  default: true
  --trace-opt (trace lazy optimization)
        type: bool  default: false
  --trace-opt-verbose (extra verbose compilation tracing)
        type: bool  default: false
  --trace-opt-stats (trace lazy optimization statistics)
        type: bool  default: false
  --trace-deopt (trace optimize function deoptimization)
        type: bool  default: false
  --trace-file-names (include file names in trace-opt/trace-deopt output)
        type: bool  default: false
  --trace-interrupts (trace interrupts when they are handled)
        type: bool  default: false
  --opt (use adaptive optimizations)
        type: bool  default: true
  --always-opt (always try to optimize functions)
        type: bool  default: false
  --always-osr (always try to OSR functions)
        type: bool  default: false
  --prepare-always-opt (prepare for turning on always opt)
        type: bool  default: false
  --trace-serializer (print code serializer trace)
        type: bool  default: false
  --compilation-cache (enable compilation cache)
        type: bool  default: true
  --cache-prototype-transitions (cache prototype transitions)
        type: bool  default: true
  --compiler-dispatcher (enable compiler dispatcher)
        type: bool  default: false
  --trace-compiler-dispatcher (trace compiler dispatcher activity)
        type: bool  default: false
  --trace-compiler-dispatcher-jobs (trace progress of individual jobs managed by the compiler dispatcher)
        type: bool  default: false
  --cpu-profiler-sampling-interval (CPU profiler sampling interval in microseconds)
        type: int  default: 1000
  --trace-js-array-abuse (trace out-of-bounds accesses to JS arrays)
        type: bool  default: false
  --trace-external-array-abuse (trace out-of-bounds-accesses to external arrays)
        type: bool  default: false
  --trace-array-abuse (trace out-of-bounds accesses to all arrays)
        type: bool  default: false
  --enable-liveedit (enable liveedit experimental feature)
        type: bool  default: true
  --trace-side-effect-free-debug-evaluate (print debug messages for side-effect-free debug-evaluate for testing)
        type: bool  default: false
  --hard-abort (abort by crashing)
        type: bool  default: true
  --expose-inspector-scripts (expose injected-script-source.js for debugging)
        type: bool  default: false
  --stack-size (default size of stack region v8 is allowed to use (in kBytes))
        type: int  default: 984
  --max-stack-trace-source-length (maximum length of function source code printed in a stack trace.)
        type: int  default: 300
  --clear-exceptions-on-js-entry (clear pending exceptions when entering JavaScript)
        type: bool  default: false
  --histogram-interval (time interval in ms for aggregating memory histograms)
        type: int  default: 600000
  --heap-profiler-trace-objects (Dump heap object allocations/movements/size_updates)
        type: bool  default: false
  --heap-profiler-use-embedder-graph (Use the new EmbedderGraph API to get embedder nodes)
        type: bool  default: true
  --heap-snapshot-string-limit (truncate strings to this length in the heap snapshot)
        type: int  default: 1024
  --sampling-heap-profiler-suppress-randomness (Use constant sample intervals to eliminate test flakiness)
        type: bool  default: false
  --use-idle-notification (Use idle notification to reduce memory footprint.)
        type: bool  default: true
  --use-ic (use inline caching)
        type: bool  default: true
  --trace-ic (trace inline cache state transitions for tools/ic-processor)
        type: bool  default: false
  --ic-stats (inline cache state transitions statistics)
        type: int  default: 0
  --native-code-counters (generate extra code for manipulating stats counters)
        type: bool  default: false
  --thin-strings (Enable ThinString support)
        type: bool  default: true
  --trace-prototype-users (Trace updates to prototype user tracking)
        type: bool  default: false
  --use-verbose-printer (allows verbose printing)
        type: bool  default: true
  --trace-for-in-enumerate (Trace for-in enumerate slow-paths)
        type: bool  default: false
  --trace-maps (trace map creation)
        type: bool  default: false
  --trace-maps-details (also log map details)
        type: bool  default: true
  --allow-natives-syntax (allow natives syntax)
        type: bool  default: false
  --lazy-inner-functions (enable lazy parsing inner functions)
        type: bool  default: true
  --aggressive-lazy-inner-functions (even lazier inner function parsing)
        type: bool  default: false
  --preparser-scope-analysis (perform scope analysis for preparsed inner functions)
        type: bool  default: true
  --trace-sim (Trace simulator execution)
        type: bool  default: false
  --debug-sim (Enable debugging the simulator)
        type: bool  default: false
  --check-icache (Check icache flushes in ARM and MIPS simulator)
        type: bool  default: false
  --stop-sim-at (Simulator stop after x number of instructions)
        type: int  default: 0
  --sim-stack-alignment (Stack alingment in bytes in simulator (4 or 8, 8 is default))
        type: int  default: 8
  --sim-stack-size (Stack size of the ARM64, MIPS64 and PPC64 simulator in kBytes (default is 2 MB))
        type: int  default: 2048
  --log-colour (When logging, try to use coloured output.)
        type: bool  default: false
  --ignore-asm-unimplemented-break (Don't break for ASM_UNIMPLEMENTED_BREAK macros.)
        type: bool  default: false
  --trace-sim-messages (Trace simulator debug messages. Implied by --trace-sim.)
        type: bool  default: false
  --stack-trace-on-illegal (print stack trace when an illegal exception is thrown)
        type: bool  default: false
  --abort-on-uncaught-exception (abort program (dump core) when an uncaught exception is thrown)
        type: bool  default: false
  --abort-on-stack-or-string-length-overflow (Abort program when the stack overflows or a string exceeds maximum length (as opposed to throwing RangeError). This is useful for fuzzing where the spec behaviour would introduce nondeterminism.)
        type: bool  default: false
  --randomize-hashes (randomize hashes to avoid predictable hash collisions (with snapshots this option cannot override the baked-in seed))
        type: bool  default: true
  --rehash-snapshot (rehash strings from the snapshot to override the baked-in seed)
        type: bool  default: true
  --hash-seed (Fixed seed to use to hash property keys (0 means random)(with snapshots this option cannot override the baked-in seed))
        type: uint64  default: 0
  --random-seed (Default seed for initializing random generator (0, the default, means to use system random).)
        type: int  default: 0
  --fuzzer-random-seed (Default seed for initializing fuzzer random generator (0, the default, means to use v8's random number generator seed).)
        type: int  default: 0
  --trace-rail (trace RAIL mode)
        type: bool  default: false
  --print-all-exceptions (print exception object and stack trace on each thrown exception)
        type: bool  default: false
  --runtime-call-stats (report runtime call counts and times)
        type: bool  default: false
  --runtime-stats (internal usage only for controlling runtime statistics)
        type: int  default: 0
  --lazy-deserialization (Deserialize code lazily from the snapshot.)
        type: bool  default: true
  --lazy-handler-deserialization (Deserialize bytecode handlers lazily from the snapshot.)
        type: bool  default: true
  --trace-lazy-deserialization (Trace lazy deserialization.)
        type: bool  default: false
  --profile-deserialization (Print the time it takes to deserialize the snapshot.)
        type: bool  default: false
  --serialization-statistics (Collect statistics on serialized objects.)
        type: bool  default: false
  --regexp-optimization (generate optimized regexp code)
        type: bool  default: true
  --regexp-mode-modifiers (enable inline flags in regexp.)
        type: bool  default: false
  --testing-bool-flag (testing_bool_flag)
        type: bool  default: true
  --testing-maybe-bool-flag (testing_maybe_bool_flag)
        type: maybe_bool  default: unset
  --testing-int-flag (testing_int_flag)
        type: int  default: 13
  --testing-float-flag (float-flag)
        type: float  default: 2.5
  --testing-string-flag (string-flag)
        type: string  default: Hello, world!
  --testing-prng-seed (Seed used for threading test randomness)
        type: int  default: 42
  --embedded-src (Path for the generated embedded data file. (mksnapshot only))
        type: string  default: nullptr
  --embedded-variant (Label to disambiguate symbols in embedded data file. (mksnapshot only))
        type: string  default: nullptr
  --startup-src (Write V8 startup as C++ src. (mksnapshot only))
        type: string  default: nullptr
  --startup-blob (Write V8 startup blob file. (mksnapshot only))
        type: string  default: nullptr
  --help (Print usage message, including flags, on console)
        type: bool  default: true
  --dump-counters (Dump counters on exit)
        type: bool  default: false
  --dump-counters-nvp (Dump counters as name-value pairs on exit)
        type: bool  default: false
  --use-external-strings (Use external strings for source code)
        type: bool  default: false
  --map-counters (Map counters to a file)
        type: string  default:
  --js-arguments (Pass all remaining arguments to the script. Alias for "--".)
        type: arguments  default:
  --log (Minimal logging (no API, code, GC, suspect, or handles samples).)
        type: bool  default: false
  --log-all (Log all events to the log file.)
        type: bool  default: false
  --log-api (Log API events to the log file.)
        type: bool  default: false
  --log-code (Log code events to the log file without profiling.)
        type: bool  default: false
  --log-handles (Log global handle events.)
        type: bool  default: false
  --log-suspect (Log suspect operations.)
        type: bool  default: false
  --log-source-code (Log source code.)
        type: bool  default: false
  --log-function-events (Log function events (parse, compile, execute) separately.)
        type: bool  default: false
  --prof (Log statistical profiling information (implies --log-code).)
        type: bool  default: false
  --detailed-line-info (Always generate detailed line information for CPU profiling.)
        type: bool  default: true
  --prof-sampling-interval (Interval for --prof samples (in microseconds).)
        type: int  default: 1000
  --prof-cpp (Like --prof, but ignore generated code.)
        type: bool  default: false
  --prof-browser-mode (Used with --prof, turns on browser-compatible mode for profiling.)
        type: bool  default: true
  --logfile (Specify the name of the log file.)
        type: string  default: v8.log
  --logfile-per-isolate (Separate log files for each isolate.)
        type: bool  default: true
  --ll-prof (Enable low-level linux profiler.)
        type: bool  default: false
  --interpreted-frames-native-stack (Show interpreted frames on the native stack (useful for external profilers).)
        type: bool  default: false
  --perf-basic-prof (Enable perf linux profiler (basic support).)
        type: bool  default: false
  --perf-basic-prof-only-functions (Only report function code ranges to perf (i.e. no stubs).)
        type: bool  default: false
  --perf-prof (Enable perf linux profiler (experimental annotate support).)
        type: bool  default: false
  --perf-prof-unwinding-info (Enable unwinding info for perf linux profiler (experimental).)
        type: bool  default: false
  --gc-fake-mmap (Specify the name of the file for fake gc mmap used in ll_prof)
        type: string  default: /tmp/__v8_gc__
  --log-internal-timer-events (Time internal events.)
        type: bool  default: false
  --log-timer-events (Time events including external callbacks.)
        type: bool  default: false
  --log-instruction-stats (Log AArch64 instruction statistics.)
        type: bool  default: false
  --log-instruction-file (AArch64 instruction statistics log file.)
        type: string  default: arm64_inst.csv
  --log-instruction-period (AArch64 instruction statistics logging period.)
        type: int  default: 4194304
  --redirect-code-traces (output deopt information and disassembly into file code-<pid>-<isolate id>.asm)
        type: bool  default: false
  --redirect-code-traces-to (output deopt information and disassembly into the given file)
        type: string  default: nullptr
  --print-opt-source (print source code of optimized and inlined functions)
        type: bool  default: false
  --trace-elements-transitions (trace elements transitions)
        type: bool  default: false
  --trace-creation-allocation-sites (trace the creation of allocation sites)
        type: bool  default: false
  --print-code-stubs (print code stubs)
        type: bool  default: false
  --test-secondary-stub-cache (test secondary stub cache by disabling the primary one)
        type: bool  default: false
  --test-primary-stub-cache (test primary stub cache by disabling the secondary one)
        type: bool  default: false
  --test-small-max-function-context-stub-size (enable testing the function context size overflow path by making the maximum size smaller)
        type: bool  default: false
  --print-code (print generated code)
        type: bool  default: false
  --print-opt-code (print optimized code)
        type: bool  default: false
  --print-opt-code-filter (filter for printing optimized code)
        type: string  default: *
  --print-code-verbose (print more information for code)
        type: bool  default: false
  --print-builtin-code (print generated code for builtins)
        type: bool  default: false
  --print-builtin-size (print code size for builtins)
        type: bool  default: false
  --sodium (print generated code output suitable for use with the Sodium code viewer)
        type: bool  default: false
  --print-all-code (enable all flags related to printing code)
        type: bool  default: false
  --predictable (enable predictable mode)
        type: bool  default: false
  --single-threaded (disable the use of background tasks)
        type: bool  default: false
  --single-threaded-gc (disable the use of background gc tasks)
        type: bool  default: false

[mowatermelon]

https://github.com/pingcap/talent-training/pull/1#issuecomment-462123281

As a new Rust programmer, the (future) content here excites me a lot to take the course. Months ago I took a look at 5.824 but I didn't spend too much time on it. Firstly because I could not find good docs/videos on the theory part (I like those courses format in platform such as coursera/edx). Secondly, as I was learning Rust at that moment, the lab of 5.824 is in Golang, so I didn't had enough energy/time to learn a new language nor finish some parts of the course.

I also feel, the content of 5.824 is a lot. For people like me (who might have a full time job or have a family) to learn something big during free time, it might be a good idea to split the big course into a few separate small parts. Like this one here: start from a memory kv store and the in the end make it a distributed system over network. I think the scope sounds very fun and challenging as well. It could be a very good start.

As nrc asked about the goal of the course, from my perspective, the goal of a student like me to learn this course could be: to be able to apply a position at PingCap(or similar type of positions at other companies) afterwards, or to have a good feeling for better understanding distributed systems (kv stores) and feel much more experienced with Rust afterwards.

About the content/format of the course, some people might like reading docs to learn, but I do like to learn via short videos. I don't know, but perhaps we can even later make this course on platforms such as coursera/edx/udemy? Making good teaching videos indeed takes lots of extra time and effort. But the good part of publishing those courses on those platforms might also make the content creators getting economic benefit. And the course can easily reach out to a border group of audiences via a course platform. But anyway, it is probably too early to start thinking in this direction. It is just from my own feeling, as I have had quite a lot courses on those platforms, it would be super awesome to have a course there about distributed kv stores in Rust and presented in the format of online courses (with good videos lectures and good homeworks, for example like the course called CS50, or the deeplearning.ai courses, which are all truly amazing).

I also hope in the future I can know these Rust topics well and being able to teach some other new comers. Making teaching materials and giving lectures are very fun and fulfilling things to do. But it is also challenging and requiring big effort to make it good. I am far from having enough skills/experiences to be helpful but I am looking forward to it :)

Anyway, I hope some of my thoughts above do make some sense to you. Thanks for starting making a course like this. I will keep an eye on how it goes and start learning it as long as it is doable for me :)