So you should do the same test in your gfs arraym both from the same machine, to see if the DLM system is the cause of your performance decrease Jure Pečar wrote: >On Fri, 27 Jan 2006 23:10:30 +0100 >sophana <sophana at zizi.ath.cx> wrote: > > > >>This is just an idea... not very sure if this is your problem. >> >> > >gfs volume is on a disk array, write cache and all that ... should not >decrease performance *that* much. > > > >