On 4/13/2012 2:36 PM, Stefan Ring wrote: >> Let's rerun it with files cached (the machine has 16 GB RAM, so >> every single file must be cached): >> >> # time tar xf test.tar >> >> real 0m50.842s >> user 0m0.809s >> sys 0m13.767s > > That’s about the same time I’m getting on a fresh (non-fragmented) > file system with the RAID 6 volume. > > Interestingly, the P400’s successor, the P410 does recognize a setting > that the P400 lacks, which is called elevatorsort. It sounds like this > could make all the difference. Unfortunately, the P400 doesn’t have > it. I don’t have a P410 with more than 2 drives to test this, but some > effect should definitely be measurable. > > Since this finding has piqued my interest again, I’m willing to invest > a little more time, but I’m completely occupied for the next few days, > so it will have to wait a while. What configuration are you running right now Stefan? You said you went back to XFS due to the EXT4 lockups, but I can't recall what RAID config you put underneath it this time. -- Stan _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
