yep - thats right. 3 OSD daemons per node.
On Thu, Jul 11, 2013 at 9:16 AM, Noah Watkins <[email protected]>wrote: > On Wed, Jul 10, 2013 at 6:23 PM, ker can <[email protected]> wrote: > > > > Now separating out the journal from data disk ... > > > > HDFS write numbers (3 disks/data node) > > Average execution time: 466 > > Best execution time : 426 > > Worst execution time : 508 > > > > ceph write numbers (3 data disks/data node + 3 journal disks/data node) > > Average execution time: 610 > > Best execution time : 593 > > Worst execution time : 635 > > > > So ceph was about 1.3x slower for the average case when journal & data > are > > separated .. a 70% improvement over the case where journal + data are on > the > > same disk - but still a bit off from the HDFS performance. > > Were you running 3 OSDs per node (an OSD per data/journal drive pair)? >
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