On Wed, 2 Dec 2009, Bruno Wolff III wrote:
On Wed, Dec 02, 2009 at 17:58:24 -0500,
Seth Vidal <skvidal@xxxxxxxxxxxxxxxxx> wrote:
I tested it on our backend to be sure. getting the complete pkglist
goes from taking 5 minutes to take 30s.
yes, I said 5 minutes.
Have you tried any of the tunning knobs to have the directory cache be
alotted more space or given higher priority? For example:
vfs_cache_pressure
------------------
Controls the tendency of the kernel to reclaim the memory which is used for
caching of directory and inode objects.
At the default value of vfs_cache_pressure=100 the kernel will attempt to
reclaim dentries and inodes at a "fair" rate with respect to pagecache and
swapcache reclaim. Decreasing vfs_cache_pressure causes the kernel to prefer
to retain dentry and inode caches. Increasing vfs_cache_pressure beyond 100
causes the kernel to prefer to reclaim dentries and inodes.
Not tried that - worth giving it a shot - but it still won't help the
'holy crap there are 15K items on this webpage and it won't render'
problem.
-sv
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