On Mon, 18 Sep 2006, Brian Akins wrote:
Graham Leggett wrote:
I have not seen inside the htcacheclean code, why is the code reading the
headers? In theory the cache should be purged based on last access time,
deleted as space is needed.
Everyone should be mounting cache directories noatime, unless they don't care
about performance...
Actually, cache on xfs mounted with atime doesn't seem to be a
performance killer oddly enough... Our frontends had no problems
surviving 1k requests/s during the latest mozilla-update-barrage.
Other mirrors had problems, so it seems we ended up with taking the
majority of the load...
That said: yes, noatime is quicker but if you want to be able to clean
your cache often (think new linux distro release which quickly fills
up the cache with new contents) atime+fs traversal is a better
combined solution than having to open/read every header.
/Nikke
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Niklas Edmundsson, Admin @ {acc,hpc2n}.umu.se | [EMAIL PROTECTED]
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That's not a bug. It's supposed to do that.
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