mirror of
https://github.com/golang/go
synced 2024-11-15 08:30:35 -07:00
842c906e2e
Unexports runtime.MemStats and rename MemStatsType to MemStats. The new accessor requires passing a pointer to a user-allocated MemStats structure. Fixes #2572. R=bradfitz, rsc, bradfitz, gustavo CC=golang-dev, remy https://golang.org/cl/5616072
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"runtime"
|
|
"sort"
|
|
"time"
|
|
)
|
|
|
|
func gcstats(name string, n int, t time.Duration) {
|
|
st := new(runtime.MemStats)
|
|
runtime.ReadMemStats(st)
|
|
fmt.Printf("garbage.%sMem Alloc=%d/%d Heap=%d NextGC=%d Mallocs=%d\n", name, st.Alloc, st.TotalAlloc, st.Sys, st.NextGC, st.Mallocs)
|
|
fmt.Printf("garbage.%s %d %d ns/op\n", name, n, t.Nanoseconds()/int64(n))
|
|
fmt.Printf("garbage.%sLastPause 1 %d ns/op\n", name, st.PauseNs[(st.NumGC-1)%uint32(len(st.PauseNs))])
|
|
fmt.Printf("garbage.%sPause %d %d ns/op\n", name, st.NumGC, int64(st.PauseTotalNs)/int64(st.NumGC))
|
|
nn := int(st.NumGC)
|
|
if nn >= len(st.PauseNs) {
|
|
nn = len(st.PauseNs)
|
|
}
|
|
t1, t2, t3, t4, t5 := tukey5(st.PauseNs[0:nn])
|
|
fmt.Printf("garbage.%sPause5: %d %d %d %d %d\n", name, t1, t2, t3, t4, t5)
|
|
|
|
// fmt.Printf("garbage.%sScan: %v\n", name, st.ScanDist)
|
|
}
|
|
|
|
type T []uint64
|
|
|
|
func (t T) Len() int { return len(t) }
|
|
func (t T) Swap(i, j int) { t[i], t[j] = t[j], t[i] }
|
|
func (t T) Less(i, j int) bool { return t[i] < t[j] }
|
|
|
|
func tukey5(raw []uint64) (lo, q1, q2, q3, hi uint64) {
|
|
x := make(T, len(raw))
|
|
copy(x, raw)
|
|
sort.Sort(T(x))
|
|
lo = x[0]
|
|
q1 = x[len(x)/4]
|
|
q2 = x[len(x)/2]
|
|
q3 = x[len(x)*3/4]
|
|
hi = x[len(x)-1]
|
|
return
|
|
}
|