Can't CPU pprof prometheus >0.15

[mwitkow]

It seems that since 0.15, I am no longer able to grab a CPU profile of our prometheus. This is sad, because it was useful to see where our CPU actually goes (whether it's rules or scraping, or metric archiving). Right now I get:

michal:~/Private/i (master) $ go tool pprof http://leafmon:9090/debug/pprof/profile
Fetching profile from http://leafmon:9090/debug/pprof/profile
Please wait... (30s)
Saved profile in /home/michal/pprof/pprof.eu1-prod-simleaf-2.simleaf.eu1-prod.internal.improbable.io:9090.samples.cpu.001.pb.gz
Entering interactive mode (type "help" for commands)
(pprof) top10
1.77mins of 1.77mins total (  100%)
      flat  flat%   sum%        cum   cum%
  1.77mins   100%   100%   1.77mins   100%  

Similarly web is empty. Has something changed for 0.15? Or am I just missing something?

[brian-brazil]

On Thu, Sep 10, 2015 at 10:01 AM, Michal Witkowski <notifications@github.com

wrote:

It seems that since 0.15, I am no longer able to grab a CPU profile of our
prometheus. This is sad, because it was useful to see where our CPU
actually goes (whether it's rules or scraping, or metric archiving). Right
now I get:

michal:~/Private/i (master) $ go tool pprof http://leafmon:9090/debug/pprof/profile
Fetching profile from http://leafmon:9090/debug/pprof/profile
Please wait... (30s)
Saved profile in /home/michal/pprof/pprof.eu1-prod-simleaf-2.simleaf.eu1-prod.internal.improbable.io:9090.samples.cpu.001.pb.gz
Entering interactive mode (type "help" for commands)
(pprof) top10
1.77mins of 1.77mins total ( 100%)
flat flat% sum% cum cum%
1.77mins 100% 100% 1.77mins 100%

Similarly web is empty. Has something changed for 0.15? Or am I just
missing something?

This was always broken until recently.
da2499d
fixes it. There hasn't been a release since, so you'll need to build from
head to get the fix.

Brian Brazil
www.robustperception.io

[juliusv]

Yep, the fix will be rolled out with the next release (RC expected this week). Sorry about that! Closing the issue here, as it's fixed in HEAD.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.