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internal/trace: add comment for stable sort

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As per comments in cl/11834.

Change-Id: I285536b882fa9496e15d77d0d4c16ee913aca581
Reviewed-on: https://go-review.googlesource.com/11861
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Dmitry Vyukov 2015-07-02 14:35:23 +02:00 committed by Brad Fitzpatrick
parent d16c7f8004
commit 1b96091a05
1 changed files with 2 additions and 0 deletions
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2
src/internal/trace/parser.go
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@ -254,6 +254,8 @@ func parseEvents(rawEvents []rawEvent) (events []*Event, err error) {
}
// Sort by time and translate cpu ticks to real time.
// Use stable sort because adjacent events in a batch can have the same timestamp
// (this was observed on some VMs).
sort.Stable(eventList(events))
if ticksPerSec == 0 {
err = fmt.Errorf("no EvFrequency event")