tailscale

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Brad Fitzpatrick 64e9ce8df1 portlist: reduce allocs on Linux

Notably, it no longer allocates proportional to the number of open
sockets on the machine. Any alloc reduction numbers are a little
contrived with such a reduction but e.g. on a machine with 50,000
connections open:

name          old time/op    new time/op    delta
ParsePorts-6    57.7ms ± 6%    32.8ms ± 3%   -43.04%  (p=0.000 n=9+10)

name          old alloc/op   new alloc/op   delta
ParsePorts-6    24.0MB ± 0%     0.0MB ± 0%  -100.00%  (p=0.000 n=10+9)

name          old allocs/op  new allocs/op  delta
ParsePorts-6      100k ± 0%        0k ± 0%   -99.99%  (p=0.000 n=10+10)

Updates tailscale/corp#2566

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

2021-09-12 16:06:46 -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