|
We have an appliance that uses the CentOS 4.4 Plus kernel
with XFS on an EMC RAID array that performs about ¼ or less as well with cached
i/o than with direct i/o. With direct i/o we get about 32Mb/s throughput or
better, but if we enable the cache for the EMC RAID, we only get 8Mb/s or
less. This doesn’t happen if we use JFS, where we get a little less than
32Mb/s throughput with or without cache enabled, on the same hardware and
CentOS, but there are some features in XFS that we use that are not available
in JFS.. Any thoughts on this? Thanks. |
_______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos
