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Cypherpunks repositories - gostls13.git/commit
syscall: add a sync.Pool for a NetlinkRIB scratch buffer
The syscall.NetlinkRIB signature means it necessarily allocates but
this changes makes it allocate a bit less. For example, in the net
package:
name old time/op new time/op delta
Interfaces-8 59.1µs ± 3% 57.3µs ± 2% -3.02% (p=0.000 n=10+10)
InterfaceByIndex-8 53.1µs ± 5% 50.6µs ± 2% -4.81% (p=0.000 n=10+10)
InterfaceByName-8 59.3µs ± 2% 57.4µs ± 1% -3.29% (p=0.000 n=10+10)
InterfaceAddrs-8 105µs ± 1% 101µs ± 1% -4.22% (p=0.000 n=10+9)
InterfacesAndAddrs-8 38.2µs ± 3% 36.3µs ± 2% -4.98% (p=0.000 n=10+10)
InterfacesAndMulticastAddrs-8 152µs ± 2% 154µs ± 6% ~ (p=0.105 n=10+10)
name old alloc/op new alloc/op delta
Interfaces-8 22.8kB ± 0% 18.7kB ± 0% -17.90% (p=0.000 n=10+9)
InterfaceByIndex-8 16.2kB ± 0% 12.1kB ± 0% -25.22% (p=0.000 n=10+10)
InterfaceByName-8 22.8kB ± 0% 18.8kB ± 0% -17.85% (p=0.000 n=10+10)
InterfaceAddrs-8 36.6kB ± 0% 28.5kB ± 0% -22.28% (p=0.000 n=10+10)
InterfacesAndAddrs-8 9.60kB ± 0% 5.51kB ± 0% -42.59% (p=0.000 n=10+7)
InterfacesAndMulticastAddrs-8 141kB ± 0% 141kB ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
Interfaces-8 53.0 ± 0% 52.0 ± 0% -1.89% (p=0.000 n=10+10)
InterfaceByIndex-8 28.0 ± 0% 27.0 ± 0% -3.57% (p=0.000 n=10+10)
InterfaceByName-8 54.0 ± 0% 53.0 ± 0% -1.85% (p=0.000 n=10+10)
InterfaceAddrs-8 155 ± 0% 153 ± 0% -1.29% (p=0.000 n=10+10)
InterfacesAndAddrs-8 38.0 ± 0% 37.0 ± 0% -2.63% (p=0.000 n=10+10)
InterfacesAndMulticastAddrs-8 77.0 ± 0% 77.0 ± 0% ~ (all equal)
Signed-off-by: Brad Fitzpatrick <bradfitz@golang.org>
Change-Id: Ic3278b2c000af78d7ed816645463c3b7ff0c90ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/485455
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>