65aaa607ab
Change made by: - running "gvt fetch" on each of the packages mentioned in Godeps/Godeps.json - `rm -rf Godeps` - tweaking the build scripts to not mention Godeps - tweaking the build scripts to test `./lib/...`, `./cmd/...` explicitly (to avoid testing vendor) - tweaking the build scripts to not juggle GOPATH for Godeps and instead set GO15VENDOREXPERIMENT. This also results in some updated packages at the same time I bet. Building with Go 1.3 and 1.4 still *works* but won't use our vendored dependencies - the user needs to have the actual packages in their GOPATH then, which they'll get with a normal "go get". Building with Go 1.6+ will get our vendored dependencies by default even when not using our build script, which is nice. By doing this we gain some freedom in that we can pick and choose manually what to include in vendor, as it's not based on just dependency analysis of our own code. This is also a risk as we might pick up dependencies we are unaware of, as the build may work locally with those packages present in GOPATH. On the other hand the build server will detect this as it has no packages in it's GOPATH beyond what is included in the repo. Recommended tool to manage dependencies is github.com/FiloSottile/gvt.
77 lines
2.6 KiB
Go
77 lines
2.6 KiB
Go
package metrics
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import (
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"runtime/debug"
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"time"
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)
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var (
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debugMetrics struct {
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GCStats struct {
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LastGC Gauge
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NumGC Gauge
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Pause Histogram
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//PauseQuantiles Histogram
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PauseTotal Gauge
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}
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ReadGCStats Timer
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}
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gcStats debug.GCStats
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)
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// Capture new values for the Go garbage collector statistics exported in
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// debug.GCStats. This is designed to be called as a goroutine.
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func CaptureDebugGCStats(r Registry, d time.Duration) {
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for _ = range time.Tick(d) {
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CaptureDebugGCStatsOnce(r)
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}
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}
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// Capture new values for the Go garbage collector statistics exported in
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// debug.GCStats. This is designed to be called in a background goroutine.
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// Giving a registry which has not been given to RegisterDebugGCStats will
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// panic.
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//
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// Be careful (but much less so) with this because debug.ReadGCStats calls
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// the C function runtime·lock(runtime·mheap) which, while not a stop-the-world
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// operation, isn't something you want to be doing all the time.
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func CaptureDebugGCStatsOnce(r Registry) {
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lastGC := gcStats.LastGC
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t := time.Now()
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debug.ReadGCStats(&gcStats)
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debugMetrics.ReadGCStats.UpdateSince(t)
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debugMetrics.GCStats.LastGC.Update(int64(gcStats.LastGC.UnixNano()))
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debugMetrics.GCStats.NumGC.Update(int64(gcStats.NumGC))
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if lastGC != gcStats.LastGC && 0 < len(gcStats.Pause) {
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debugMetrics.GCStats.Pause.Update(int64(gcStats.Pause[0]))
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}
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//debugMetrics.GCStats.PauseQuantiles.Update(gcStats.PauseQuantiles)
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debugMetrics.GCStats.PauseTotal.Update(int64(gcStats.PauseTotal))
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}
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// Register metrics for the Go garbage collector statistics exported in
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// debug.GCStats. The metrics are named by their fully-qualified Go symbols,
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// i.e. debug.GCStats.PauseTotal.
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func RegisterDebugGCStats(r Registry) {
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debugMetrics.GCStats.LastGC = NewGauge()
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debugMetrics.GCStats.NumGC = NewGauge()
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debugMetrics.GCStats.Pause = NewHistogram(NewExpDecaySample(1028, 0.015))
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//debugMetrics.GCStats.PauseQuantiles = NewHistogram(NewExpDecaySample(1028, 0.015))
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debugMetrics.GCStats.PauseTotal = NewGauge()
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debugMetrics.ReadGCStats = NewTimer()
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r.Register("debug.GCStats.LastGC", debugMetrics.GCStats.LastGC)
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r.Register("debug.GCStats.NumGC", debugMetrics.GCStats.NumGC)
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r.Register("debug.GCStats.Pause", debugMetrics.GCStats.Pause)
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//r.Register("debug.GCStats.PauseQuantiles", debugMetrics.GCStats.PauseQuantiles)
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r.Register("debug.GCStats.PauseTotal", debugMetrics.GCStats.PauseTotal)
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r.Register("debug.ReadGCStats", debugMetrics.ReadGCStats)
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}
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// Allocate an initial slice for gcStats.Pause to avoid allocations during
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// normal operation.
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func init() {
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gcStats.Pause = make([]time.Duration, 11)
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}
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