Hi, On Tue, 2011-01-04 at 05:00 -0500, Thomas Sjolshagen wrote: > Hi, > > Posted this on IRC just now, but was recommended to try another approach. > > I'm wondering if the locks/sec rate I'm seeing between two virtual > machines is what I should expect - details below: > > I've got a 2-node cluster that is actually two KVM VMs (Fedora 14 in > the guests/vms). Between the two VM's, I'm sharing - iSCSI based > external array using virtio_net drivers in the guests/vms - two GFS2 > file systems. After setting <dlm> and <gfs_controld> as listed below > in cluster.conf (and, of course, rebooting the whole cluster), I'm > still only seeing 600-650 locks/sec when using the ping_pong utility. > > <dlm plock_ownership="1" plock_rate_limit="0" protocol="sctp"/> > <gfs_controld plock_rate_limit="0"/> > > The same settings & configuration on the physical hosts (a separate > cluster, but using the same iSCSI array) is seeing 5.5-6K locks/sec. > > I'm also curious as to why, when starting ping_pong on the virtualized > node1, I see ~20-40K locks/sec, but if I start and then stop ping_pong > on the virtualized node2, node1 never returns to anything close to the > 20-40K locks/sec. Is that (also) expected? > Did you have the second node mounted when you got the faster locking rates on the first node? Steve. -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
