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cmd/go: better documentation about profiling 

Point the user to "go tool pprof" and mention some
important flags.

Fixes #4990.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/7657045
This commit is contained in:
Rob Pike 2013-03-13 13:56:51 -07:00
parent 8883c484cf
commit 2211634113
2 changed files with 14 additions and 4 deletions
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9
src/cmd/go/doc.go
View File

@ -685,6 +685,11 @@ Description of testing flags
The 'go test' command takes both flags that apply to 'go test' itself
and flags that apply to the resulting test binary.
Several of the flags control profiling and write an execution profile
suitable for "go tool pprof"; run "go tool pprof help" for more
information. The --alloc_space, --alloc_objects, and --show_bytes
options of pprof control how the information is presented.
The following flags are recognized by the 'go test' command and
control the execution of any test:
@ -722,8 +727,8 @@ control the execution of any test:
Write a CPU profile to the specified file before exiting.
-memprofile mem.out
Write a memory profile to the specified file when all tests
are complete.
Write a memory profile to the specified file after all tests
have passed.
-memprofilerate n
Enable more precise (and expensive) memory profiles by setting

9
src/cmd/go/test.go
View File

@ -81,6 +81,11 @@ var helpTestflag = &Command{
The 'go test' command takes both flags that apply to 'go test' itself
and flags that apply to the resulting test binary.
Several of the flags control profiling and write an execution profile
suitable for "go tool pprof"; run "go tool pprof help" for more
information. The --alloc_space, --alloc_objects, and --show_bytes
options of pprof control how the information is presented.
The following flags are recognized by the 'go test' command and
control the execution of any test:
@ -118,8 +123,8 @@ control the execution of any test:
Write a CPU profile to the specified file before exiting.
-memprofile mem.out
Write a memory profile to the specified file when all tests
are complete.
Write a memory profile to the specified file after all tests
have passed.
-memprofilerate n
Enable more precise (and expensive) memory profiles by setting