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cmd/trace: show swept and reclaimed bytes

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This displays the swept and reclaimed bytes for sweep events in the
lower panel of the trace viewer.

Change-Id: If1665a1c02bbc47700e0d9f515e574f013f3f285
Reviewed-on: https://go-review.googlesource.com/40812
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This commit is contained in:
Austin Clements 2017-04-14 14:53:09 -04:00
parent 22000f5407
commit 7ca53f2f8b
1 changed files with 12 additions and 4 deletions
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16
src/cmd/trace/trace.go
View File

@ -481,7 +481,13 @@ func generateTrace(params *traceParams) (ViewerData, error) {
}
ctx.emitSlice(&fakeMarkStart, text)
case trace.EvGCSweepStart:
ctx.emitSlice(ev, "SWEEP")
slice := ctx.emitSlice(ev, "SWEEP")
if done := ev.Link; done != nil && done.Args[0] != 0 {
slice.Arg = struct {
Swept uint64 `json:"Swept bytes"`
Reclaimed uint64 `json:"Reclaimed bytes"`
}{done.Args[0], done.Args[1]}
}
case trace.EvGoStart, trace.EvGoStartLabel:
info := getGInfo(ev.G)
if ev.Type == trace.EvGoStartLabel {
@ -574,8 +580,8 @@ func (ctx *traceContext) proc(ev *trace.Event) uint64 {
}
}
func (ctx *traceContext) emitSlice(ev *trace.Event, name string) {
ctx.emit(&ViewerEvent{
func (ctx *traceContext) emitSlice(ev *trace.Event, name string) *ViewerEvent {
sl := &ViewerEvent{
Name: name,
Phase: "X",
Time: ctx.time(ev),
@ -583,7 +589,9 @@ func (ctx *traceContext) emitSlice(ev *trace.Event, name string) {
Tid: ctx.proc(ev),
Stack: ctx.stack(ev.Stk),
EndStack: ctx.stack(ev.Link.Stk),
})
}
ctx.emit(sl)
return sl
}
type heapCountersArg struct {