[CentOS] Subversion causing Apache to hog memory

Neil Aggarwal neil at JAMMConsulting.com
Fri May 15 23:22:54 UTC 2009


Hello:

I posted this to the subversion list yesterday and have
not received a reponse.  I am hoping someone on this
list will be able to help me.

I have a CentOS 5 server running subversion 1.5.6-0.2.el5.rf
installed using yum from the rpmforge repository.

I am using svnsync to mirror from another repository to
the local machine.  It is called from a cron job every 5 minutes.

After a few days of running fine, I started getting this error
from cron:

svnsync: DAV request failed; it's possible that the repository's
pre-revprop-change hook either failed or is non-existent
svnsync: At least one property change failed; repository is unchanged
svnsync: Error setting property 'sync-lock': 
Failed to start '/usr/local/svn/MyProject/hooks/pre-revprop-change' hook

Looking in /var/log/httpd/error_log, I see this:

Could not execute PROPPATCH.  [500, #206]
Failed to start '/usr/local/svn/MyProject/hooks/pre-revprop-change' hook
[500, #165001]
Can't start process '/usr/local/svn/MyProject/hooks/pre-revprop-change':
Cannot allocate memory  [500, #12]

Looking at top, the machine has allocated all of the RAM available.

When I stop httpd, the RAM comes back.

I rebooted the machine and ran top in a shell.
I then issued the svnsync command in another shell.
I can see the memory usage going up each time I run the svnsync command
but it does not seem to come down even after leaving the machine idle for
a while.
If I then stop httpd, the memory comes back.

It looks like svnsync is somehow causing apache to hog memory.

Any ideas?

Thanks,
	Neil

--
Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com
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