Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

runtime: improve goroutine profiler #7926

Open
dvyukov opened this issue May 2, 2014 · 4 comments
Open

runtime: improve goroutine profiler #7926

dvyukov opened this issue May 2, 2014 · 4 comments
Milestone
Unplanned

Comments

@dvyukov
Copy link
Member

dvyukov commented May 2, 2014 

Some concrete suggestions:
1. Add goroutine state (waiting, runnable, syscall) as comment in debug more and/or as
top frame (so that all waiting goroutines converge in a single "Waiting" block
in svg graph.
2. Add "created by" line in debug mode.
3. Dedup stacks, there can be thousands of equal stacks.
@dvyukov
Copy link
Member Author

dvyukov commented May 4, 2014

Comment 1:

Another useful piece of information is how long a goroutine is blocked (similar to what
we output in crash reports). But this conflicts with stack deduplication.

@hyangah
Copy link
Contributor

hyangah commented May 6, 2014

Comment 2:

which debug mode do you target? Do you target to add additional display debug mode?
* debug=1 doesn't show each goroutine state or created-by info, but collapses the equal
stacks into a group.
* debug=2 shows each goroutine's state and created-by info along with function arguments.

@dvyukov
Copy link
Member Author

dvyukov commented May 7, 2014

Comment 3:

You are right, I've missed debug=2 mode.
So the only potential addition is 1.
I wanted to check how it would look like, but it turned out that pprof does not support
goroutine profiles. That's something to fix.

@rsc
Copy link
Contributor

rsc commented Sep 18, 2014

Comment 4:

Labels changed: added release-none, removed release-go1.4.

@rsc rsc added this to the Unplanned milestone Apr 10, 2015
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
Unplanned
Development

No branches or pull requests
3 participants
@rsc @dvyukov @hyangah