#32660: onionoo-backend is killing the ganeti cluster
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Reporter: anarcat | Owner: metrics-team
Type: defect | Status: merge_ready
Priority: Medium | Milestone:
Component: Metrics/Onionoo | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
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Changes (by irl):
* status: needs_review => merge_ready
Comment:
Replying to [comment:10 anarcat]:
> before we start doing optimization tradeoffs, especially ones involving
more CPU time, I think we should diagnose the problem further. running
checksums can take a while and might impose extra load on the server...
couldn't we use timestamps or some faster mechanism?
I don't know enough about XFS to know if filesystem attributes can be
trusted.
Replying to [comment:9 karsten]:
> irl, please review
[https://gitweb.torproject.org/user/karsten/onionoo.git/commit/?h=task-32660&id=4b7b13d37d2423f9b1dee865e203a524b8df488b
commit 4b7b13d in my task-32660 branch].
The change looks good if we decide we want to go this route. The JVM
should use the Intel SHA extensions on recent processors, I don't think
that we're going to see a huge increase in CPU load.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/32660#comment:11>
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