We are not using jumbo packets (they are not on by default, are they?) and I have tried both udp and tcp mounts, same symptom. The nics tested where syskonnect as well as tg3 and it behaved identically.
-----Original Message----- From: Joe Landman [mailto:[EMAIL PROTECTED] Sent: Friday, September 15, 2006 9:28 AM To: Michael Will Cc: Brent Franks; Chris Samuel; [email protected] Subject: Re: NFS Performance (was Re: [Beowulf] GPFS on Linux (x86)) Michael Will wrote: > I am puzzled by an sles9sp3 (2.6.9 kernel) nfs server that serves > rhel3 > (2.4.21 kernel) compute nodes. For some reason a lot of times the > mounts fail (with default as well as modified parameters). The symptom > is > mount: rpc timeout. The server logs all authentification requests as > successful. The switch is an oversubscribed hp 4108gl. Yes. This is what we ran into last year. A SuSE box serving a Rocks cluster (Rocks 4.0). Basic idea: use tcp mounts and turn off jumbo packets. Also, we had major issues with the tg3 driver, and moved the RHEL units to a BCM5700 driver. After this, most of the problems went away. -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics LLC, email: [EMAIL PROTECTED] web : http://www.scalableinformatics.com phone: +1 734 786 8423 fax : +1 734 786 8452 or +1 866 888 3112 cell : +1 734 612 4615 _______________________________________________ Beowulf mailing list, [email protected] To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
