Brad Fitzpatrick
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df176c82f5
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util/deephash: skip alloc test under race detector
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-07 11:40:28 -07:00 |
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Brad Fitzpatrick
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6dc38ff25c
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util/deephash: optimize hashing of byte arrays, reduce allocs in Hash
name old time/op new time/op delta
Hash-6 173µs ± 4% 101µs ± 3% -41.69% (p=0.000 n=10+9)
HashMapAcyclic-6 101µs ± 5% 105µs ± 3% +3.52% (p=0.001 n=9+10)
TailcfgNode-6 29.4µs ± 2% 16.4µs ± 3% -44.25% (p=0.000 n=8+10)
name old alloc/op new alloc/op delta
Hash-6 3.60kB ± 0% 1.13kB ± 0% -68.70% (p=0.000 n=10+10)
HashMapAcyclic-6 2.53kB ± 0% 2.53kB ± 0% ~ (p=0.137 n=10+8)
TailcfgNode-6 528B ± 0% 0B -100.00% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
Hash-6 84.0 ± 0% 40.0 ± 0% -52.38% (p=0.000 n=10+10)
HashMapAcyclic-6 202 ± 0% 202 ± 0% ~ (all equal)
TailcfgNode-6 11.0 ± 0% 0.0 -100.00% (p=0.000 n=10+10)
Updates tailscale/corp#2130
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-07 11:30:49 -07:00 |
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Brad Fitzpatrick
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3962744450
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util/deephash: prevent infinite loop on map cycle
Fixes #2340
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-07 10:57:46 -07:00 |
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Brad Fitzpatrick
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aceaa70b16
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util/deephash: move funcs to methods
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-07 08:17:18 -07:00 |
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Brad Fitzpatrick
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14f901da6d
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util/deephash: fix sync.Pool usage
Whoops.
From yesterday's 9ae3bd0939 (not yet
used by anything, fortunately)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-05 22:21:44 -07:00 |
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Brad Fitzpatrick
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e0258ffd92
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util/deephash: use keyed struct literal, fix vet
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-05 21:31:30 -07:00 |
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Brad Fitzpatrick
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bf9f279768
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util/deephash: optimize CPU a bit by by avoiding fmt in more places
name old time/op new time/op delta
Hash-6 179µs ± 5% 173µs ± 4% -3.12% (p=0.004 n=10+10)
HashMapAcyclic-6 115µs ± 3% 101µs ± 5% -11.51% (p=0.000 n=9+9)
TailcfgNode-6 30.8µs ± 4% 29.4µs ± 2% -4.51% (p=0.000 n=10+8)
name old alloc/op new alloc/op delta
Hash-6 3.60kB ± 0% 3.60kB ± 0% ~ (p=0.445 n=9+10)
HashMapAcyclic-6 2.53kB ± 0% 2.53kB ± 0% ~ (p=0.065 n=9+10)
TailcfgNode-6 528B ± 0% 528B ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
Hash-6 84.0 ± 0% 84.0 ± 0% ~ (all equal)
HashMapAcyclic-6 202 ± 0% 202 ± 0% ~ (all equal)
TailcfgNode-6 11.0 ± 0% 11.0 ± 0% ~ (all equal)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-05 21:28:54 -07:00 |
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Brad Fitzpatrick
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58f2ef6085
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util/deephash: add a benchmark and some benchmark data
No code changes.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-05 21:21:52 -07:00 |
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Brad Fitzpatrick
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9ae3bd0939
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util/deephash: export a Hash func for use by the control plane
name old time/op new time/op delta
Hash-6 69.4µs ± 6% 68.4µs ± 4% ~ (p=0.286 n=9+9)
HashMapAcyclic-6 115µs ± 5% 115µs ± 4% ~ (p=1.000 n=10+10)
name old alloc/op new alloc/op delta
Hash-6 2.29kB ± 0% 1.88kB ± 0% -18.13% (p=0.000 n=10+10)
HashMapAcyclic-6 2.53kB ± 0% 2.53kB ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
Hash-6 58.0 ± 0% 54.0 ± 0% -6.90% (p=0.000 n=10+10)
HashMapAcyclic-6 202 ± 0% 202 ± 0% ~ (all equal)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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2021-07-05 11:41:44 -07:00 |
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Brad Fitzpatrick
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700badd8f8
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util/deephash: move internal/deephash to util/deephash
No code changes. Just a minor package doc addition about lack of API
stability.
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2021-07-02 21:33:02 -07:00 |
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