Am 23.11.2012 15:17, schrieb Alexandre DERUMIER: >>> Preallocation doesn't matter much these days. > > I have done benchmark through nfs on a netapp san, (with directio), > > I got 300 iops without preallocation, and 6000 iops with preallocation ....
This doesn't sound right, even for writethrough modes. Can you post more details about your benchmark setup so that this can be reproduced? And does it reproduce with local files as well or only using NFS? Kevin
