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mirror of https://github.com/octoleo/restic.git synced 2025-02-02 20:08:25 +00:00
restic/internal
Michael Eischer 17c53efb0d filter: Optimize double wildcard expansion
This only allocates a single slice to expand the double wildcard and
only copies the pattern prefix once.

name                          old time/op    new time/op    delta
FilterPatterns/Relative-4       22.7ms ± 5%    23.3ms ± 9%     ~     (p=0.353 n=10+10)
FilterPatterns/Absolute-4       14.2ms ±13%    13.9ms ± 7%     ~     (p=0.853 n=10+10)
FilterPatterns/Wildcard-4        266ms ±16%      51ms ± 7%  -80.67%  (p=0.000 n=10+9)
FilterPatterns/ManyNoMatch-4     554ms ± 6%     551ms ± 9%     ~     (p=0.436 n=10+10)

name                          old alloc/op   new alloc/op   delta
FilterPatterns/Relative-4       3.57MB ± 0%    3.57MB ± 0%     ~     (p=0.349 n=10+10)
FilterPatterns/Absolute-4       3.57MB ± 0%    3.57MB ± 0%     ~     (p=0.073 n=10+9)
FilterPatterns/Wildcard-4        141MB ± 0%      14MB ± 0%  -89.89%  (p=0.000 n=10+9)
FilterPatterns/ManyNoMatch-4    3.57MB ± 0%    3.57MB ± 0%     ~     (all equal)

name                          old allocs/op  new allocs/op  delta
FilterPatterns/Relative-4        22.2k ± 0%     22.2k ± 0%     ~     (all equal)
FilterPatterns/Absolute-4        22.2k ± 0%     22.2k ± 0%     ~     (all equal)
FilterPatterns/Wildcard-4        1.63M ± 0%     0.09M ± 0%  -94.56%  (p=0.000 n=10+10)
FilterPatterns/ManyNoMatch-4     22.2k ± 0%     22.2k ± 0%     ~     (all equal)
2020-10-07 20:47:48 +02:00
..
2020-09-05 10:07:16 +02:00
2018-10-11 19:40:38 +02:00
2018-05-22 20:48:17 +02:00
2019-04-13 13:38:39 +02:00
2020-09-12 17:36:44 +02:00
2020-09-28 14:26:53 +02:00
2020-10-05 17:25:39 +02:00
2020-09-21 14:21:32 +02:00