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path: root/internal/fusefrontend/dircache.go
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2021-08-23go mod: declare module version v2Jakob Unterwurzacher
Our git version is v2+ for some time now, but go.mod still declared v1. Hopefully making both match makes https://pkg.go.dev/github.com/rfjakob/gocryptfs/v2 work. All the import paths have been fixed like this: find . -name \*.go | xargs sed -i s%github.com/rfjakob/gocryptfs/%github.com/rfjakob/gocryptfs/v2/%
2021-06-25fusefrontend: implement recursive diriv cachingJakob Unterwurzacher
The new contrib/maxlen.bash showed that we have exponential runtime with respect to directory depth. The new recursive diriv caching is a lot smarter as it caches intermediate lookups. maxlen.bash now completes in a few seconds. xfstests results same as https://github.com/rfjakob/fuse-xfstests/blob/2d158e4c82be85c15269af77498e353f928f4fab/screenlog.0 : Failures: generic/035 generic/062 generic/080 generic/093 generic/099 generic/215 generic/285 generic/319 generic/426 generic/444 generic/467 generic/477 generic/523 Failed 13 of 580 tests benchmark.bash results are identical: $ ./benchmark.bash Testing gocryptfs at /tmp/benchmark.bash.BdQ: gocryptfs v2.0.1-17-g6b09bc0; go-fuse v2.1.1-0.20210611132105-24a1dfe6b4f8; 2021-06-25 go1.16.5 linux/amd64 /tmp/benchmark.bash.BdQ.mnt is a mountpoint WRITE: 262144000 bytes (262 MB, 250 MiB) copied, 0,4821 s, 544 MB/s READ: 262144000 bytes (262 MB, 250 MiB) copied, 0,266061 s, 985 MB/s UNTAR: 8,280 MD5: 4,564 LS: 1,745 RM: 2,244
2021-04-05fusefrontend: print dirCache stats after unmountJakob Unterwurzacher
2021-04-04fs: more idiomatic dirCache struct namingJakob Unterwurzacher
2021-04-03fs: add initial dirfd cachingJakob Unterwurzacher
dirfd caching was temporarily removed when moving to the v2api. Add it back to gain back some lost speed.
2020-05-17dircache: increase cache size & lifetimeJakob Unterwurzacher
Looking at the dircache debug output, we see that a "git status" workload has a very bad cache hit rate because the entries expire or get evicted before they can be reused. Increase both cache size and lifetime for a 4x speedup: Before: 75s After: 17s https://github.com/rfjakob/gocryptfs/issues/410
2020-05-17dircache: improve debug messagesJakob Unterwurzacher
Before: Lookup "errno.html/1/2/3/4/5": miss Store: "errno.html/1/2/3/4/5" fd=26 iv=21be6e083d60dcabfe7368264d5082b7 Lookup "errno.html": hit 25 6d68a16d217978915036a3bd55428ae7 Lookup "errno.html/1": hit 25 932a464c299b3430c5e55c924f98ac4d Lookup "errno.html/1/2": hit 25 7d53348b1692d537f017bf86b3cf5feb Lookup "errno.html/1/2/3": hit 25 2aef1c9d1ab2b55b163215053fefe703 Lookup "errno.html/1/2/3/4": hit 25 cb802be53721c46a46247c5e4e0f4ce6 Lookup "errno.html/1/2/3/4": hit 25 cb802be53721c46a46247c5e4e0f4ce6 Lookup "errno.html": hit 25 6d68a16d217978915036a3bd55428ae7 After: Lookup "earlyoom/.git/refs" hit fd=10 dup=17 iv=6ae2cecd269a25e8d946aff6afe9b8b8 Lookup "earlyoom/.git/refs/remotes" hit fd=19 dup=17 iv=f04c2d2a5bcc33ebdeaca664859c980d Lookup "earlyoom/.git/refs/remotes/origin" miss Store "earlyoom/.git/refs/remotes/origin" fd=17 iv=834a64a1697c9f5705455ba6dbed22b5 Lookup "earlyoom" hit fd=7 dup=25 iv=2303a892d6e2357c483574a8070b7679 Lookup "earlyoom/.git" hit fd=11 dup=25 iv=d43ca4aff23720c57789c9f62f0aee00 Lookup "earlyoom/.git" hit fd=11 dup=25 iv=d43ca4aff23720c57789c9f62f0aee00 Lookup "earlyoom/.git/refs" hit fd=10 dup=25 iv=6ae2cecd269a25e8d946aff6afe9b8b8 Lookup "earlyoom/.git/refs/heads" hit fd=13 dup=25 iv=f9245e7c066b9adc768a1a666da9fbc8
2019-01-05main: Run 'ensure fds' code early during the program startup.Sebastian Lackner
The files are apparently processed in alphabetic order, so cli_args.go is processed before main.go. In order to run before the go-fuse imports, put the 'ensure fds' code in a separate package. Debug messages are omitted to avoid additional imports (that might contain other code messing up our file descriptors).
2019-01-05A few more spelling fixes.Sebastian Lackner
2019-01-04tests: bump maxCacheFds to 3Jakob Unterwurzacher
As the dirCache now has 3 entries, the tests should accept up to 3 extra fds without declaring an fd leak.
2019-01-04fusefrontend: fix fd leak in dirCacheJakob Unterwurzacher
The missing break meant that we may find a second hit in the cache, Dup() a second fd, and leak the first one. Thanks @slackner for finding this.
2019-01-04fusefrontend: disable dirCache stats printingJakob Unterwurzacher
This was inadvertedly kept enabled after benchmarking.
2019-01-04fusefrontend: upgrade to three-entry dirCachev1.7-rc1Jakob Unterwurzacher
3 entries should work well for up to three parallel users. It works well for extractloop.bash (two parallel tar extracts).
2019-01-03fusefrontend: add dirCacheJakob Unterwurzacher
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