Last modified: 2013-10-23 10:13:26 UTC

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Bug 54787 - monitor gallium disk performances
monitor gallium disk performances
Status: RESOLVED FIXED
Product: Wikimedia
Classification: Unclassified
Continuous integration (Other open bugs)
wmf-deployment
All All
: Normal normal (vote)
: ---
Assigned To: Antoine "hashar" Musso (WMF)
:
Depends on: 36994
Blocks:
  Show dependency tree / graph
 
Reported: 2013-09-30 14:11 UTC by Antoine "hashar" Musso (WMF)
Modified: 2013-10-23 10:13 UTC (History)
4 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---

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Description Antoine "hashar" Musso (WMF) 2013-09-30 14:11:40 UTC 
Ever since gallium got upgraded from Lucid to Precise, we have been suffering disk I/O latency.  If my memory serves me well, the MediaWiki dump tests went from 30 seconds to 1 minutes.

From time to time, we get massive latency on gallium slave. It would be nice to have the disk statistics monitored in Ganglia.

That should be possible with ganglia::diskstat introduced by https://gerrit.wikimedia.org/r/#/c/85669/ for bug 36994


This bug is merely a remember to get the diskstat ganglia plugin applied in gallium (and lanthanum).
Comment 1 Nemo 2013-09-30 14:27:53 UTC 
(In reply to comment #0)
> This bug is merely a remember to get the diskstat ganglia plugin applied in
> gallium (and lanthanum).

Do we need another bug to have it on all production hosts, or at least database hosts? :)
Comment 2 Antoine "hashar" Musso (WMF) 2013-09-30 15:12:47 UTC 
I am not sure what is going the impact of deploying that plugin on all servers. But I surely need it on Jenkins boxes.

Feel free to fill a bug (blocked by bug 36994) to request the diskstat plugin to be applied in database.  I am sure our DBA will be more than happy to have such metrics :-]
Comment 3 Antoine "hashar" Musso (WMF) 2013-10-22 09:10:19 UTC 
Still pending bug 36994 (deploy the ganglia module making it possible to monitor disk).
Comment 4 Antoine "hashar" Musso (WMF) 2013-10-23 10:13:26 UTC 
Both Jenkins CI slaves (gallium and lanthanum) have diskstat enabled in Ganglia now :-]  Thanks to Ori!
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