Check the slab usage of xfs_* might help . $ sudo slabtop Hope it help 從我的 iPhone 傳送 Jonathan Lu <jojokururu at gmail.com> 於 2013/6/17 下午3:25 寫道： > Hi, all, > I'm facing the issue about the performance degradation, and once I glanced that changing the value in /proc/sys/vm/vfs_cache_pressure will do a favour. > > Can anyone explain to me whether and why it is useful? I have scanned the Deployment Guide of OpenStack Swift but cannot find anything about such tuning. > > Thanks, > Jonathan Lu > _______________________________________________ > Mailing list: https://launchpad.net/~openstack > Post to : openstack at lists.launchpad.net > Unsubscribe : https://launchpad.net/~openstack > More help : https://help.launchpad.net/ListHelp -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20130617/050ed9b7/attachment.html>