Hi, I have 23 disks formatted with XFS on a single server. The workload is Openstack Swift. See this email from a few months ago about the details: http://oss.sgi.com/archives/xfs/2015-06/msg00108.html I am observing some strange behavior and would like to get some feedback about why this is happening. I formatted the disks with xfs (mkfs.xfs) and deployed Openstack Swift on it. Writing 100GB of data into Swift in batches of 20GB each gave us the following throughput: 20 GB: 93MB/s 40 GB: 65MB/s 60 GB: 52MB/s 80 GB: 50MB/s 100 GB: 48MB/s I then re-formatted the disks with mkfs.xfs -f and ran the experiment again. This time I got the following throughput: 20 GB: 118MB/s 40 GB: 95MB/s 60 GB: 74MB/s 80 GB: 68MB/s 100 GB: 63MB/s I've seen similar results twice. Any ideas why this might be happening? Thanks in advance. -Shri _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
