diff options
| author | Russ Cox <rsc@golang.org> | 2022-02-03 14:12:08 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2022-04-11 16:34:30 +0000 |
| commit | 19309779ac5e2f5a2fd3cbb34421dafb2855ac21 (patch) | |
| tree | 67dfd3e5d96250325e383183f95b6f5fe1968514 /src/cmd/trace | |
| parent | 017933163ab6a2b254f0310c61b57db65cded92e (diff) | |
| download | go-19309779ac5e2f5a2fd3cbb34421dafb2855ac21.tar.xz | |
all: gofmt main repo
[This CL is part of a sequence implementing the proposal #51082.
The design doc is at https://go.dev/s/godocfmt-design.]
Run the updated gofmt, which reformats doc comments,
on the main repository. Vendored files are excluded.
For #51082.
Change-Id: I7332f099b60f716295fb34719c98c04eb1a85407
Reviewed-on: https://go-review.googlesource.com/c/go/+/384268
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/cmd/trace')
| -rw-r--r-- | src/cmd/trace/annotations_test.go | 6 | ||||
| -rw-r--r-- | src/cmd/trace/doc.go | 20 |
2 files changed, 16 insertions, 10 deletions
diff --git a/src/cmd/trace/annotations_test.go b/src/cmd/trace/annotations_test.go index 9f1c8e3b3b..ca14d3160b 100644 --- a/src/cmd/trace/annotations_test.go +++ b/src/cmd/trace/annotations_test.go @@ -53,9 +53,9 @@ func TestOverlappingDuration(t *testing.T) { // prog0 starts three goroutines. // -// goroutine 1: taskless region -// goroutine 2: starts task0, do work in task0.region0, starts task1 which ends immediately. -// goroutine 3: do work in task0.region1 and task0.region2, ends task0 +// goroutine 1: taskless region +// goroutine 2: starts task0, do work in task0.region0, starts task1 which ends immediately. +// goroutine 3: do work in task0.region1 and task0.region2, ends task0 func prog0() { ctx := context.Background() diff --git a/src/cmd/trace/doc.go b/src/cmd/trace/doc.go index ed1f930a7b..26a96fac2f 100644 --- a/src/cmd/trace/doc.go +++ b/src/cmd/trace/doc.go @@ -6,25 +6,31 @@ Trace is a tool for viewing trace files. Trace files can be generated with: - - runtime/trace.Start - - net/http/pprof package - - go test -trace + - runtime/trace.Start + - net/http/pprof package + - go test -trace Example usage: Generate a trace file with 'go test': + go test -trace trace.out pkg + View the trace in a web browser: + go tool trace trace.out + Generate a pprof-like profile from the trace: + go tool trace -pprof=TYPE trace.out > TYPE.pprof Supported profile types are: - - net: network blocking profile - - sync: synchronization blocking profile - - syscall: syscall blocking profile - - sched: scheduler latency profile + - net: network blocking profile + - sync: synchronization blocking profile + - syscall: syscall blocking profile + - sched: scheduler latency profile Then, you can use the pprof tool to analyze the profile: + go tool pprof TYPE.pprof Note that while the various profiles available when launching |