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runtime/metrics: document runtime-internal locks in /sync/mutex/wait/total:seconds 

For #57071.

Change-Id: I7ce6c35bed95a6ea3cdc17007f861c5dd82404d2
Reviewed-on: https://go-review.googlesource.com/c/go/+/547056
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Rhys Hiltner <rhys@justin.tv>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Michael Pratt 2023-12-04 15:12:25 -05:00 committed by Gopher Robot
parent 98fd8f5768
commit 3f2bf706f7
2 changed files with 6 additions and 6 deletions
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2
src/runtime/metrics/description.go
View File

@ -441,7 +441,7 @@ var allDesc = []Description{
},
{
Name: "/sync/mutex/wait/total:seconds",
Description: "Approximate cumulative time goroutines have spent blocked on a sync.Mutex or sync.RWMutex. This metric is useful for identifying global changes in lock contention. Collect a mutex or block profile using the runtime/pprof package for more detailed contention data.",
Description: "Approximate cumulative time goroutines have spent blocked on a sync.Mutex, sync.RWMutex, or runtime-internal lock. This metric is useful for identifying global changes in lock contention. Collect a mutex or block profile using the runtime/pprof package for more detailed contention data.",
Kind: KindFloat64,
Cumulative: true,
},

10
src/runtime/metrics/doc.go
View File

@ -447,10 +447,10 @@ Below is the full list of supported metrics, ordered lexicographically.
monotonically.
/sync/mutex/wait/total:seconds
Approximate cumulative time goroutines have spent blocked
on a sync.Mutex or sync.RWMutex. This metric is useful for
identifying global changes in lock contention. Collect a mutex
or block profile using the runtime/pprof package for more
detailed contention data.
Approximate cumulative time goroutines have spent blocked on a
sync.Mutex, sync.RWMutex, or runtime-internal lock. This metric
is useful for identifying global changes in lock contention.
Collect a mutex or block profile using the runtime/pprof package
for more detailed contention data.
*/
package metrics