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${ noResults }
3 Commits (cf5d25e15b71acc62f728c0942fc240a3122031f)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Avery Pennarun
|
806de4ac94 |
portlist: fix "readdirent: no such file or directory" errors on Linux.
This could happen when a process disappeared while we were reading its
file descriptor list.
I was able to replicate the problem by running this in another
terminal:
while :; do for i in $(seq 10); do
/bin/true & done >&/dev/null; wait >&/dev/null;
done
And then running the portlist tests thousands of times.
Fixes #339.
Signed-off-by: Avery Pennarun <apenwarr@tailscale.com>
|
5 years ago |
|
Brad Fitzpatrick
|
f8d67bb591 |
portlist: ignore ports bound to localhost
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
5 years ago |
|
Brad Fitzpatrick
|
120273d7f6 |
portlist: document, clean up, fix an open fd spike, optimize a bit
I noticed portlist when looking at some profiles and hadn't looked at the code much before. This is a first pass over it. It allocates a fair bit. More love remains, but this does a bit: name old time/op new time/op delta GetList-8 9.92ms ± 8% 9.64ms ±12% ~ (p=0.247 n=10+10) name old alloc/op new alloc/op delta GetList-8 931kB ± 0% 869kB ± 0% -6.70% (p=0.000 n=10+10) name old allocs/op new allocs/op delta GetList-8 4.59k ± 0% 3.69k ± 1% -19.71% (p=0.000 n=10+10) Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
5 years ago |