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Brad Fitzpatrick 5a9d977c78 portlist: reduce CPU parsing portlist

Avoid splitting fields in the common case. Field splitting was 84% of
the overall CPU.

name          old time/op    new time/op    delta
ParsePorts-6    33.3ms ± 2%     6.3ms ± 4%  -80.97%  (p=0.000 n=9+10)

name          old alloc/op   new alloc/op   delta
ParsePorts-6      520B ±79%      408B ± 0%  -21.49%  (p=0.046 n=10+8)

name          old allocs/op  new allocs/op  delta
ParsePorts-6      7.00 ± 0%      7.00 ± 0%     ~     (all equal)

Updates tailscale/corp#2566

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

2021-09-13 08:22:47 -07:00

clean_test.go

portlist: report a better process name for .Net on linux.

2021-03-03 22:30:27 -08:00

clean.go

portlist: report a better process name for .Net on linux.

2021-03-03 22:30:27 -08:00

netstat_exec.go

all: simplify build tags involving iOS

2021-08-17 11:13:03 -07:00

netstat_test.go

portlist: filter out all of 127.0.0.0/8, not just 127.0.0.1/32