Closed apotterri closed 1 year ago
I identified the issue, the backend cannot keep up with the data sent by the frontend. The synchronous post-processing and the async file writing takes too much time. As a result, the backends buffers raw traces ready to be post-processed. And this buffer finally overflows. Here is the beginning of a log of an experiment I made.
APPMAP-WARNING Failed to parse git description "@appland/appmap-v3.65.3-1-g5ece1c7a"
APPMAP-WARNING Failed to parse git description "@appland/scanner-latest-630-g5ece1c7a"
APPMAP-WARNING Invalid type for version property in package.json file at "file:///Users/soft/Desktop/workspace/appmap-js/", got null
APPMAP-INFO Spawning 8 processes sequentially ...
APPMAP-INFO Send SIGINT to gracefully exit
APPMAP-INFO Spawning "yarn exec jest --testPathIgnorePatterns record.spec.ts" [1/8] ...
(node:46454) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46455) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46455) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(node:46477) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46478) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46479) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time
(Use `node --trace-warnings ...` to show where the warning was created)
(node:46479) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(node:46478) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
(node:46477) ExperimentalWarning: VM Modules is an experimental feature and might change at any time
APPMAP-INFO Recording jest test cases of process #46479 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"]
APPMAP-INFO Recording jest test cases of process #46478 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"]
APPMAP-INFO Recording jest test cases of process #46477 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"]
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APPMAP-INFO AppMap file:///Users/soft/Desktop/workspace/appmap-js/packages/cli/tmp/jest/FingerprintWatchCommand%20a%20pid%20file%20is%20created%20when%20env%20var%20is%20set.appmap.json
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APPMAP-INFO AppMap file:///Users/soft/Desktop/workspace/appmap-js/packages/cli/tmp/jest/FingerprintWatchCommand%20a%20pid%20file%20is%20not%20created%20when%20env%20var%20is%20unset.appmap.json
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APPMAP-INFO AppMap file:///Users/soft/Desktop/workspace/appmap-js/packages/cli/tmp/jest/FingerprintWatchCommand%20indexing%20occurs%20on%20existing%20un-indexed%20appmaps.appmap.json
(node:46478) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 exit listeners added to [process]. Use emitter.setMaxListeners() to increase limit
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This is what stream backpressure is for
On Fri, Apr 28, 2023 at 3:32 PM Laurent Christophe @.***> wrote:
I identified the issue, the backend cannot keep up with the data sent by the frontend. The synchronous post-processing and the async file writing takes too much time. As a result, the backends buffers raw traces ready to be post-processed. And this buffer finally overflows. Here is the beginning of a log of an experiment I made.
APPMAP-WARNING Failed to parse git description @./appmap-v3.65.3-1-g5ece1c7a" APPMAP-WARNING Failed to parse git description @./scanner-latest-630-g5ece1c7a" APPMAP-WARNING Invalid type for version property in package.json file at "file:///Users/soft/Desktop/workspace/appmap-js/", got null APPMAP-INFO Spawning 8 processes sequentially ... APPMAP-INFO Send SIGINT to gracefully exit APPMAP-INFO Spawning "yarn exec jest --testPathIgnorePatterns record.spec.ts" [1/8] ... (node:46454) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time (Use
node --trace-warnings ...
to show where the warning was created) (node:46455) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time (Usenode --trace-warnings ...
to show where the warning was created) (node:46455) ExperimentalWarning: VM Modules is an experimental feature and might change at any time (node:46477) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time (Usenode --trace-warnings ...
to show where the warning was created) (node:46478) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time (Usenode --trace-warnings ...
to show where the warning was created) (node:46479) ExperimentalWarning: Custom ESM Loaders is an experimental feature and might change at any time (Usenode --trace-warnings ...
to show where the warning was created) (node:46479) ExperimentalWarning: VM Modules is an experimental feature and might change at any time (node:46478) ExperimentalWarning: VM Modules is an experimental feature and might change at any time (node:46477) ExperimentalWarning: VM Modules is an experimental feature and might change at any time APPMAP-INFO Recording jest test cases of process #46479 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"] APPMAP-INFO Recording jest test cases of process #46478 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"] APPMAP-INFO Recording jest test cases of process #46477 -- ["/Users/soft/.nvm/versions/node/v18.13.0/bin/node","/Users/soft/Desktop/workspace/appmap-js/node_modules/jest-worker/build/workers/processChild.js"] { "arrival": 1, "sources": 0, 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Use emitter.setMaxListeners() to increase limit { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950 } } { "arrival": 955, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 0 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954 } } { "arrival": 961, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 0 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960 } } { "arrival": 961, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 0 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960 } } { "arrival": 957, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 0 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956 } } { "arrival": 957, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 0 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956 } } { "arrival": 1, "sources": 128, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 0 } } { "arrival": 1, "sources": 129, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 0 } } { "arrival": 1, "sources": 130, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 0 } } { "arrival": 1011, "sources": 131, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 0 } } { "arrival": 1, "sources": 131, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 1010 } } { "arrival": 1019, "sources": 131, "tracks": { "jest-k7gb6fc8": 0, "jest-k8adhf1g": 950, "jest-k9l2q8fg": 954, "jest-katq8ot7": 960, "jest-kbv3jneo": 960, "jest-kccqm958": 956, "jest-kcum2g0o": 956, "jest-kdg77if5": 1010, "jest-ke0aagto": 0 } }— Reply to this email directly, view it on GitHub https://github.com/getappmap/appmap-agent-js/issues/213#issuecomment-1528001690, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAAVC64BFR67F5DBJEWEB43XDQLMXANCNFSM6AAAAAAWSUIZ5I . 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:tada: This issue has been resolved in version 13.9.0 :tada:
The release is available on:
Your semantic-release bot :package::rocket:
As of commit 93cc94ca in
appmap-js
, runningwill sometimes get an out-of-memory error:
The
--testTimeout
flag seems to be important here. Without it, some of the tests time out, and the OOM error doesn't happen.