On Sun, 2010-02-07 at 17:32 -0430, Patrick O'Callaghan wrote: > After reducing my RAM to 2GB via the mem= boot option (see parallel > branch of this thread) I don't seem to be getting memory errors, but I > still have problems, apparently with NFS. I've posted a trace from > dmesg to http://fpaste.org/eEh6/ That sounds a bit like: http://article.gmane.org/gmane.linux.nfs/30419 and: http://article.gmane.org/gmane.linux.nfs/30437 There's a patch in the first link which I don't think is in the kernel you're running; could be worth a look if you are seeing this regularly. > The scenario is that I'm using rsync to an NFS-mounted directory as a > backup method. I had previously tried rsyncing directly to the server > (an Iomega ix2-200 desktop NAS), but it's unbelievably slow in this > configuration. I measured 100-300Kbps doing it this way -- which would > take well over a day to run my initial full backup job), versus at least > an order of magnitude faster running rsync over NFS. I conjecture that > the NAS cpu just isn't up to calculating the rsync checksums fast enough > to keep up with a 100Mbps LAN. Is the box under memory pressure while doing this workload with mem=2g? That would tend to support the idea that you're seeing the above problem since it's been reported to occur under low memory conditions. Regards, Bryn. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
