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From "Geoff Millikan" <>
Subject RE: [users@httpd] mod_disk_cache causing corrupted output on server side includes?
Date Thu, 10 Jun 2010 18:39:02 GMT
> Just in case your filesystem doesn't support them, have you tried
> disabling sendfile and mmap?

Since all our files are being read directly off the drive (we're not using a
NFS or CIFS mount) this shouldn't be an issue (at least on RedHat Enterprise
Linux).  But we'll give it a shot and report back.

Maybe the issue is htcacheclean is corrupting the included files?  Nope.  We
turned it off and still had the problem.  Maybe the corruption is happening
when the cache is getting rebuilt (because CacheMaxExpire or
CacheLastModifiedFactor had been exceeded).  Nope.  We set everything very
high (CacheDefaultExpire 2592000 and CacheLastModifiedFactor 30) so that the
first cached page would be preserved and not altered (the initial cached
page is not corrupted) however within a few hours the server side include
pages served out of the cache had binary data in them again.  It's
impossible to trace when the corruption is happening and what's causing it.
So mod_disk_cache is not useable for us, we've had to turn it off.

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