On Sat, 5 May 2007 09:15:41 +0000 (UTC) Duncan <[EMAIL PROTECTED]> wrote: --snip-- > > Actually, here, I have 8 gigs. That's a bit overkill. I'd probably > stick with four if I were doing it over, as over four gigs remains > entirely empty, most of the time, not even used for cache. --snip--
In case you didn't know... There are several kernel configuration options you can tweak to make it cache more aggressively. Also you could try XFS - it is known to be one of the most hungry-for-RAM file systems. Please, have in mind that these tweaks could be dangerous for your file system in case of power failure. Consider using an UPS. So, you could try changing the values of the following params in /etc/sysctl.conf and activate their new values by "sysctl -p" vm.overcommit_memory fs.xfs.xfsbufd_centisecs fs.xfs.xfssyncd_centisecs fs.xfs.age_buffer_centisecs vm.dirty_ratio vm.dirty_background_ratio vm.dirty_expire_centisecs vm.dirty_writeback_centisecs vm.swappiness vm.swap_token_timeout vm.vfs_cache_pressure vm.page-cluster The meanings of these options are described in the kernel docs, so the files containing the info could be found by grepping like: "grep -rinm1 dirty_expire_centisecs /usr/src/linux/Documentation". Have fun! ;-) -- Best regards, Daniel -- [EMAIL PROTECTED] mailing list
