On 09/09/17 04:41, Prentice Bisbal wrote: > Any ideas where to look or what to tweak to fix this? Any idea why this > is only occuring with RHEL 6 w/ NFS root OS?
No ideas, but in addition to what others have suggested: 1) diff the output of dmidecode between 4 nodes, 2 OK and 2 slow to see what differences there are in common (if any) between the OK & slow nodes. I would think you would only see serial number and UUID differences (certainly that's what I see here for our gear). 2) reboot an idle OK and slow node node and immediately capture the output of dmesg on both and then diff that. Hopefully that will reveal any differences in kernel boot options, driver messages, power saving settings, etc, that might be implicated. Good luck! Chris -- Christopher Samuel Senior Systems Administrator Melbourne Bioinformatics - The University of Melbourne Email: sam...@unimelb.edu.au Phone: +61 (0)3 903 55545 _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
