Am 21.01.2015 um 07:53 schrieb Ryan Ollos:
On Tue, Jan 20, 2015 at 10:39 PM, Torge Riedel <[email protected]
<mailto:[email protected]>> wrote:
Am 21.01.2015 um 05:26 schrieb Ryan Ollos:
On Tue, Jan 20, 2015 at 12:09 PM, Torge Riedel <[email protected]
<mailto:[email protected]> <mailto:[email protected]
<mailto:[email protected]>>> wrote:
Hi @all,
just got a server shutdown by my provider caused by 100% CPU load
by apache processes.
After reactivation I played around and found the following:
- I have TracTicketChangeLogPlugin installed (the latest version
from repo, updated on 18th January 2015)
- If I view a ticket with 3 entries in the commit history I get an
apache process with 100% CPU load, staying at this level
- Killing this process raises another one reaching 100% CPU load,
staying at this level
- Killing the second process too reduces the server load to a
normal level
- After deactivation of the plugin I can view any ticket without a
problem
-> seems to be related to the ticket
Any ideas?
I'm sure that I had no problems with this plugin of an older
version.
Regards
Torge
Which branch have you installed from, 0.12 or 1.0? What is the version
of the plugin? I don't see anything in recent changes that looks concerning,
but you could try rolling back to that earlier version of the plugin and check
if the issue occurs with that one ticket. What version / revision were you
running prior to updating the plugin on 18th of Jan? Can you reproduce the
issue with more that one of the tickets in your system?
The TracTicketChangeLogPlugin runs a LIKE query on the revision table on
every request. I'm no database performance expert, but that has concerned me since I
first started looking at the plugin. An outline of changes for improving the plugin
can be found here: http://trac-hacks.org/ticket/__11821
<http://trac-hacks.org/ticket/11821>
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Installed vom Branch 1.0 ("TracTicketChangelogPlugin 1.0.0dev" is displayed in the
"Plugins" section of the "Admin" menu).
I will try stepping back revision by revision to see when this "issue was
added."
Thanks, that will be very helpful info. In the event that you started on the
0.12 branch and later switched to the 1.0 branch, it would be useful to test
the 0.12 branch again. In the 0.12 branch the features are mostly implemented
in JavaScript. In the 1.0 branch the plugin is mostly implemented in Python and
a Genshi template.
But I think at first it is a good idea to update from trac 1.0.1 to 1.0.3
to make sure there are no side effects.
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Sorry, was very busy for a while.
Today I found the time to check it again. At first I updated to Trac-1.0.4 and
activated TracTicketChangeLogPlugin. I get the 100% CPU usage again as soon as
I want to view a ticket with related commits. I tried with 0.12 branch of the
plugin and it works without any problems.
Here is my log pattern (list all commits where this ticket is mentioned):
[ticketlog]
log_pattern = (\n|.)*#%s($|\D(\n|.)*)
Trac about page:
Paket Version
Trac 1.0.4
Babel 0.9.6
FullBlog 0.1.1
Genshi 0.6 (with speedups)
mod_wsgi 3.3 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
MySQL server: "5.5.41-0ubuntu0.12.04.1", client: "5.5.41", thread-safe: 1
MySQLdb 1.2.3
Pygments 1.4
Python 2.7.3 (default, Dec 18 2014, 19:25:50) [GCC 4.6.3]
setuptools 0.6
Subversion 1.6.17 (r1128011)
System:
Ubuntu 12.04 LTS Server
Any ideas? Let me know if you need more information.
Regards
Torge
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