On Fri, Jun 26, 2015 at 8:16 PM, Michael Barton <mike at weirdlooking.com> wrote: > > What's the logical difference between having object data in memory on a > memcache server and having it in page cache on an object server? > +1 - about a syscall - i.e. not much - I think memcache does it's own heap management - so it's probably all userspace - but the locality is all wrong - just do it on the object nodes [1]! ... if you want object data served from memory - just turn on keep_cache_private and crank up keep_cache_size [2] -Clay 1. concurrent GETs would help serve the warmed copies first - https://review.openstack.org/#/c/117710/ 2. mind your /proc/fs/xfs/stat graphs tho - maybe not an issue if your object data filesystem is on an SSD storage policy tho -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20150629/4403fa2e/attachment.html>