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| author | Michael Pratt <mpratt@google.com> | 2020-08-07 16:28:35 +0000 |
|---|---|---|
| committer | Michael Pratt <mpratt@google.com> | 2021-04-23 13:48:10 +0000 |
| commit | bedfeed54a7a80123c07f83c325a0bcfe5c43398 (patch) | |
| tree | e3cd3332028b2bd64350701f5957b5cfbc0beb3d /src/runtime/metrics | |
| parent | 105a6e9518a5195950a2798769af6e86b6d87417 (diff) | |
| download | go-bedfeed54a7a80123c07f83c325a0bcfe5c43398.tar.gz go-bedfeed54a7a80123c07f83c325a0bcfe5c43398.zip | |
runtime,runtime/metrics: add metric to track scheduling latencies
This change adds a metric to track scheduling latencies, defined as the
cumulative amount of time a goroutine spends being runnable before
running again. The metric is an approximations and samples instead of
trying to record every goroutine scheduling latency.
This change was primarily authored by mknyszek@google.com.
Change-Id: Ie0be7e6e7be421572eb2317d3dd8dd6f3d6aa152
Reviewed-on: https://go-review.googlesource.com/c/go/+/308933
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Diffstat (limited to 'src/runtime/metrics')
| -rw-r--r-- | src/runtime/metrics/description.go | 5 | ||||
| -rw-r--r-- | src/runtime/metrics/doc.go | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/runtime/metrics/description.go b/src/runtime/metrics/description.go index 1175156104..9aaf457135 100644 --- a/src/runtime/metrics/description.go +++ b/src/runtime/metrics/description.go @@ -176,6 +176,11 @@ var allDesc = []Description{ Description: "Count of live goroutines.", Kind: KindUint64, }, + { + Name: "/sched/latencies:seconds", + Description: "Distribution of the time goroutines have spent in the scheduler in a runnable state before actually running.", + Kind: KindFloat64Histogram, + }, } // All returns a slice of containing metric descriptions for all supported metrics. diff --git a/src/runtime/metrics/doc.go b/src/runtime/metrics/doc.go index 7f790afc12..7cbc0415dc 100644 --- a/src/runtime/metrics/doc.go +++ b/src/runtime/metrics/doc.go @@ -139,5 +139,9 @@ Below is the full list of supported metrics, ordered lexicographically. /sched/goroutines:goroutines Count of live goroutines. + + /sched/latencies:seconds + Distribution of the time goroutines have spent in the scheduler + in a runnable state before actually running. */ package metrics |