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fix(fs): only apply case option to fakefs in stress test (#10440)
Fixes a regression introduced in #10439, mentioned in [a comment](https://github.com/syncthing/syncthing/pull/10439#issuecomment-3436515824) made by @imsodin: > That might not be the greatest way to do this, but nevertheless it afaik means that the benchmarks now do case checking once when it shouldn't happen at all, and twice otherwise. Benchmarks do approximately as well as before the regression, and I think most of them are random chance: ``` │ ../oldold.txt │ ../new.txt │ │ sec/op │ sec/op vs base │ WalkCaseFakeFS100k/rawfs-8 654.6m ± 1% 652.6m ± 3% ~ (p=0.971 n=10) WalkCaseFakeFS100k/casefs-8 1.049 ± 2% 1.071 ± 3% ~ (p=0.190 n=10) WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 1.053 ± 3% 1.081 ± 5% ~ (p=0.165 n=10) geomean 897.7m 910.8m +1.46% │ ../oldold.txt │ ../new.txt │ │ B/entry │ B/entry vs base │ WalkCaseFakeFS100k/rawfs-8 1.274Ki ± 0% 1.274Ki ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 1.771Ki ± 0% 1.771Ki ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 1.772Ki ± 0% 1.772Ki ± 0% ~ (p=1.000 n=10) ¹ geomean 1.587Ki 1.587Ki +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ DirNames/entry │ DirNames/entry vs base │ WalkCaseFakeFS100k/rawfs-8 512.5m ± 0% 512.5m ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 1.025 ± 0% 1.025 ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 1.025 ± 0% 1.025 ± 0% ~ (p=1.000 n=10) ¹ geomean 813.5m 813.5m +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ DirNames/op │ DirNames/op vs base │ WalkCaseFakeFS100k/rawfs-8 51.25k ± 0% 51.25k ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 102.5k ± 0% 102.5k ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 102.5k ± 0% 102.5k ± 0% ~ (p=1.000 n=10) ¹ geomean 81.35k 81.35k +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ Lstat/entry │ Lstat/entry vs base │ WalkCaseFakeFS100k/rawfs-8 5.535 ± 0% 5.535 ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 5.535 ± 0% 5.535 ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 5.540 ± 0% 5.540 ± 0% ~ (p=1.000 n=10) ¹ geomean 5.537 5.537 +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ Lstat/op │ Lstat/op vs base │ WalkCaseFakeFS100k/rawfs-8 553.5k ± 0% 553.5k ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 553.5k ± 0% 553.5k ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 554.0k ± 0% 554.0k ± 0% ~ (p=1.000 n=10) ¹ geomean 553.7k 553.7k +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ allocs/entry │ allocs/entry vs base │ WalkCaseFakeFS100k/rawfs-8 19.00 ± 0% 19.00 ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-8 35.35 ± 0% 35.35 ± 0% ~ (p=1.000 n=10) ¹ WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 35.38 ± 0% 35.38 ± 0% ~ (p=1.000 n=10) ¹ geomean 28.75 28.75 +0.00% ¹ all samples are equal │ ../oldold.txt │ ../new.txt │ │ sec/entry │ sec/entry vs base │ WalkCaseFakeFS100k/rawfs-8 4.328µ ± 1% 4.315µ ± 3% ~ (p=0.971 n=10) WalkCaseFakeFS100k/casefs-8 6.936µ ± 2% 7.082µ ± 3% ~ (p=0.171 n=10) WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 6.965µ ± 3% 7.147µ ± 5% ~ (p=0.165 n=10) geomean 5.935µ 6.022µ +1.46% │ ../oldold.txt │ ../new.txt │ │ B/op │ B/op vs base │ WalkCaseFakeFS100k/rawfs-8 188.3Mi ± 0% 188.3Mi ± 0% -0.00% (p=0.006 n=10) WalkCaseFakeFS100k/casefs-8 261.5Mi ± 0% 261.5Mi ± 0% ~ (p=0.142 n=10) WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 261.7Mi ± 0% 261.7Mi ± 0% ~ (p=0.315 n=10) geomean 234.4Mi 234.4Mi -0.00% │ ../oldold.txt │ ../new.txt │ │ allocs/op │ allocs/op vs base │ WalkCaseFakeFS100k/rawfs-8 2.873M ± 0% 2.873M ± 0% -0.00% (p=0.026 n=10) WalkCaseFakeFS100k/casefs-8 5.346M ± 0% 5.346M ± 0% ~ (p=0.136 n=10) WalkCaseFakeFS100k/casefs-otherOpEvery1000-8 5.351M ± 0% 5.351M ± 0% ~ (p=0.305 n=10) geomean 4.348M 4.348M -0.00% ``` Signed-off-by: Marcus B Spencer <marcus@marcusspencer.us>
This commit is contained in:
Marcus B Spencer
@@ -156,7 +156,7 @@ func testCaseFSStat(t *testing.T, fsys Filesystem) {
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func BenchmarkWalkCaseFakeFS100k(b *testing.B) {
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const entries = 100_000
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fsys, paths, err := fakefsForBenchmark(entries, 0)
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fsys, paths, err := fakefsForTest(entries, 0)
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if err != nil {
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b.Fatal(err)
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}
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@@ -260,7 +260,7 @@ func TestStressCaseFS(t *testing.T) {
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t.Skip("long test")
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}
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fsys, paths, err := fakefsForBenchmark(10_000, 0)
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fsys, paths, err := fakefsForTest(10_000, 0, &OptionDetectCaseConflicts{})
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if err != nil {
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t.Fatal(err)
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}
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@@ -326,8 +326,8 @@ func doubleWalkFSWithOtherOps(fsys Filesystem, paths []string, otherOpEvery int,
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return nil
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}
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func fakefsForBenchmark(nfiles int, latency time.Duration) (Filesystem, []string, error) {
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fsys := NewFilesystem(FilesystemTypeFake, fmt.Sprintf("fakefsForBenchmark?files=%d&insens=true&latency=%s", nfiles, latency), &OptionDetectCaseConflicts{})
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func fakefsForTest(nfiles int, latency time.Duration, opts ...Option) (Filesystem, []string, error) {
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fsys := NewFilesystem(FilesystemTypeFake, fmt.Sprintf("fakefsForBenchmark?files=%d&insens=true&latency=%s", nfiles, latency), opts...)
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var paths []string
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if err := fsys.Walk("/", func(path string, info FileInfo, err error) error {
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