Hello, There's multiple reasons such things could be happening and though both of you see similar symptoms the underlying causes may be different. I highly suggest opening cases with Red Hat Support if you are Red Hat customers. As far as what it could be... well, there's a lot to pick from. One thing that comes to mind is: https://bugzilla.redhat.com/show_bug.cgi?id=683155 But that depends on the size of the file being written vs. rgrp size. Lock contention is also a possibility of course. I'd start with that bug and go from there. Again, Red Hat Support may be able to really assist you in this. Thanks, Adam Drew ----- Original Message ----- > On Mer, 11 Maggio 2011 10:34 pm, Ramiro Blanco wrote: > > Hi, > > > > I have a 4 node cluster running gfs2 on top of a EMC SAN for a while > > now, and since couple of months ago we are randomly experiencing > > heavy > > write slowdowns. Write rate goes down from about 30 MB/s to 10 kB/s. > > Hi! > > i've got a similar issue. In may case for example, an SCP copy begin > with > 30MB/s but after about 15 minuts it is less then 300Kb/s > > Why? > > > -- > Andrea Modesto Rossi > Fedora Ambassador > > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
