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${ noResults }
9 Commits (673b3d8dbd2a841e032cb970c30846a9cee6ea42)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Brad Fitzpatrick
|
db2cc393af |
util/dirwalk, metrics, portlist: add new package for fast directory walking
This is similar to the golang.org/x/tools/internal/fastwalk I'd
previously written but not recursive and using mem.RO.
The metrics package already had some Linux-specific directory reading
code in it. Move that out to a new general package that can be reused
by portlist too, which helps its scanning of all /proc files:
name old time/op new time/op delta
FindProcessNames-8 2.79ms ± 6% 2.45ms ± 7% -12.11% (p=0.000 n=10+10)
name old alloc/op new alloc/op delta
FindProcessNames-8 62.9kB ± 0% 33.5kB ± 0% -46.76% (p=0.000 n=9+10)
name old allocs/op new allocs/op delta
FindProcessNames-8 2.25k ± 0% 0.38k ± 0% -82.98% (p=0.000 n=9+10)
Change-Id: I75db393032c328f12d95c39f71c9742c375f207a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
|
2 years ago |
|
Brad Fitzpatrick
|
da8def8e13 |
all: remove old +build tags
The //go:build syntax was introduced in Go 1.17: https://go.dev/doc/go1.17#build-lines gofmt has kept the +build and go:build lines in sync since then, but enough time has passed. Time to remove them. Done with: perl -i -npe 's,^// \+build.*\n,,' $(git grep -l -F '+build') Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
2 years ago |
|
Josh Bleecher Snyder
|
94fb42d4b2 |
all: use testingutil.MinAllocsPerRun
There are a few remaining uses of testing.AllocsPerRun: Two in which we only log the number of allocations, and one in which dynamically calculate the allocations target based on a different AllocsPerRun run. This also allows us to tighten the "no allocs" test in wgengine/filter. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com> |
3 years ago |
|
Brad Fitzpatrick
|
d1cb7a2639 |
metrics: use SYS_OPENAT
New systems like arm64 don't even have SYS_OPEN. |
3 years ago |
|
Brad Fitzpatrick
|
99a1c74a6a |
metrics: optimize CurrentFDs to not allocate on Linux
It was 50% of our allocs on one of our servers. (!!) Updates #2784 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
3 years ago |
|
Brad Fitzpatrick
|
fc160f80ee |
metrics: move currentFDs code to the metrics package
Updates #2784 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
3 years ago |
|
Brad Fitzpatrick
|
f267a7396f | metrics: add LabelMap.GetFloat | 4 years ago |
|
David Anderson
|
f192c05413 |
metrics: add a LabelMap type for variables with 1 label dimension.
This lets us publish sets of vars that are breakdowns along one dimension in a format that Prometheus and Grafana natively know how to do useful things with. Signed-off-by: David Anderson <dave@natulte.net> |
5 years ago |
|
Brad Fitzpatrick
|
e371520cc5 |
tsweb, derp: add expvar http.Handler for Prometheus's format
And add some opinions. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> |
5 years ago |