diff options
| author | Michael Anthony Knyszek <mknyszek@google.com> | 2020-08-07 16:37:29 +0000 |
|---|---|---|
| committer | Michael Knyszek <mknyszek@google.com> | 2020-10-26 21:48:03 +0000 |
| commit | 80c6b92ecb911409f57d06793a1213395b75ebe2 (patch) | |
| tree | 60b1a1ff9b161a445ebe1d5d6b3fac58a687d302 | |
| parent | d39a89fd5843f535d634620d27110b320431f584 (diff) | |
| download | go-80c6b92ecb911409f57d06793a1213395b75ebe2.tar.gz go-80c6b92ecb911409f57d06793a1213395b75ebe2.zip | |
runtime,runtime/metrics: export goroutine count as a metric
For #37112.
Change-Id: I994dfe848605b95ef6aec24f53869e929247e987
Reviewed-on: https://go-review.googlesource.com/c/go/+/247049
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
| -rw-r--r-- | src/runtime/metrics.go | 6 | ||||
| -rw-r--r-- | src/runtime/metrics/description.go | 5 | ||||
| -rw-r--r-- | src/runtime/metrics/doc.go | 3 | ||||
| -rw-r--r-- | src/runtime/metrics_test.go | 4 |
4 files changed, 18 insertions, 0 deletions
diff --git a/src/runtime/metrics.go b/src/runtime/metrics.go index 0e391472b2..d3c0341aee 100644 --- a/src/runtime/metrics.go +++ b/src/runtime/metrics.go @@ -214,6 +214,12 @@ func initMetrics() { in.sysStats.gcMiscSys + in.sysStats.otherSys }, }, + "/sched/goroutines:goroutines": { + compute: func(_ *statAggregate, out *metricValue) { + out.kind = metricKindUint64 + out.scalar = uint64(gcount()) + }, + }, } metricsInit = true } diff --git a/src/runtime/metrics/description.go b/src/runtime/metrics/description.go index 47959e467c..bc2e0882db 100644 --- a/src/runtime/metrics/description.go +++ b/src/runtime/metrics/description.go @@ -163,6 +163,11 @@ var allDesc = []Description{ Description: "All memory mapped by the Go runtime into the current process as read-write. Note that this does not include memory mapped by code called via cgo or via the syscall package. Sum of all metrics in /memory/classes.", Kind: KindUint64, }, + { + Name: "/sched/goroutines:goroutines", + Description: "Count of live goroutines.", + Kind: KindUint64, + }, } // 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 1e12ade5a1..e340f3d0dd 100644 --- a/src/runtime/metrics/doc.go +++ b/src/runtime/metrics/doc.go @@ -123,5 +123,8 @@ Supported metrics as read-write. Note that this does not include memory mapped by code called via cgo or via the syscall package. Sum of all metrics in /memory/classes. + + /sched/goroutines:goroutines + Count of live goroutines. */ package metrics diff --git a/src/runtime/metrics_test.go b/src/runtime/metrics_test.go index 7b3132bc30..167edd57fd 100644 --- a/src/runtime/metrics_test.go +++ b/src/runtime/metrics_test.go @@ -145,6 +145,10 @@ func TestReadMetricsConsistency(t *testing.T) { for i := range h.Counts { gc.pauses += h.Counts[i] } + case "/sched/goroutines:goroutines": + if samples[i].Value.Uint64() < 1 { + t.Error("number of goroutines is less than one") + } } } if totalVirtual.got != totalVirtual.want { |