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vasi / squashfuse

FUSE filesystem to mount squashfs archives
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squashfuse_ll multi threaded mode is slower than both single threaded LL/high-level fuse #121

Open isidentical opened 8 months ago

isidentical commented 8 months ago

For the same image (a compressed Python environment with -comp=lzo, -Xalgorithm=lzo1x_1), a mainly metadata heavy import procedure takes almost %25 more time when using the default options (multithreaded) compared to the single threaded mode of the squashfuse_ll.

Benchmarks

first time second time third time
squashfuse 0m3.454s 0m2.646s 0m2.668s
squashfuse_ll 0m4.367s 0m2.454s 0m2.597s
squashfuse_ll -o clone_fd 0m4.418s 0m2.398s 0m2.407s
squashfuse_ll -s 0m3.389s 0m2.388s 0m2.366s

(tested on a freshly built version of squashfuse 0.5.0)

DrDaveD commented 7 months ago

Thanks for running the benchmark and reporting the results. Is the application single threaded? The default setting is for best performance with multithreaded applications.