Right. So I am still not clear whether 64GB oss's will be of any benefit. My understanding at the moment is that oss's don't benefit from larger memory, hence we run with 2GB.
-- Dr Stuart Midgley [EMAIL PROTECTED] >> > > The implementation of ZFS is segmented into several major functional > units. The data management unit (DMU) is the bulk of the on-disk > structure and is what Lustre will actually interface with for the > MDT/OST. > The adaptive replacement cache (ARC) is the cache management code and > is used to manage manage memory in both userspace and the Solaris > kernel. > > As a result, the userspace servers do not benefit at all from having a > duplicate kernel-side cache, like any large database implementation, > so we will be avoiding that as best possible. Initially we were doing > O_DIRECT IO, but using async IO (libaio) showed much better > performance > for the way the ARC submits IO to disk. > > Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
