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runtime/metrics: mark histogram metrics as cumulative

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All the current histogram metrics accumulate counts from program start
to infinity, and can be reasonably used to compute rates (also to
generate windowed distributions).

Change-Id: I5196c59867de34fba41bb8552606fa315460cef9
Reviewed-on: https://go-review.googlesource.com/c/go/+/282633
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>
Reviewed-by: Austin Clements <austin@google.com>
This commit is contained in:
Michael Anthony Knyszek 2021-01-08 17:12:50 +00:00 committed by Michael Knyszek
parent 8f6a9acbb3
commit 6250833911
1 changed files with 3 additions and 0 deletions
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3
src/runtime/metrics/description.go
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@ -73,11 +73,13 @@ var allDesc = []Description{
Name: "/gc/heap/allocs-by-size:bytes", Name: "/gc/heap/allocs-by-size:bytes",
Description: "Distribution of all objects allocated by approximate size.", Description: "Distribution of all objects allocated by approximate size.",
Kind: KindFloat64Histogram, Kind: KindFloat64Histogram,
Cumulative: true,
}, },
{ {
Name: "/gc/heap/frees-by-size:bytes", Name: "/gc/heap/frees-by-size:bytes",
Description: "Distribution of all objects freed by approximate size.", Description: "Distribution of all objects freed by approximate size.",
Kind: KindFloat64Histogram, Kind: KindFloat64Histogram,
Cumulative: true,
}, },
{ {
Name: "/gc/heap/goal:bytes", Name: "/gc/heap/goal:bytes",
@ -93,6 +95,7 @@ var allDesc = []Description{
Name: "/gc/pauses:seconds", Name: "/gc/pauses:seconds",
Description: "Distribution individual GC-related stop-the-world pause latencies.", Description: "Distribution individual GC-related stop-the-world pause latencies.",
Kind: KindFloat64Histogram, Kind: KindFloat64Histogram,
Cumulative: true,
}, },
{ {
Name: "/memory/classes/heap/free:bytes", Name: "/memory/classes/heap/free:bytes",