You can change the rsize and wsize, typically to 8k to avoid unnecessary IP -fragmentation . On Mon, Nov 2, 2009 at 9:30 AM, Richard Scobie <richard@xxxxxxxxxxx> wrote: > Client: Core i7, 12GB Fedora 8 2.6.26.8-57.fc8 x86_64, NFS mount options > rsize=32768,wsize=32768,intr,hard,vers=3, Gigabit connected. > > Server: Core 2 Quad Xeon, 16GB Fedora 9 2.6.27.19-78.2.30.fc9.x86_64 > > Under some heavy work loads where the client is pulling large files and all > CPUs are maxed out, the NFS connection "disappears" - df shows no entry for > the NFS mount and some minutes later it will reappear again. > > I am inclined to suspect the client, as similar workloads from other > machines to the same server have no problem. > > Suspecting the onboard Realtek NIC, I replaced it with an Intel, but the > problem still occurs. > > Can anyone tell me if there is likely to be a bug in these kernel versions > that is contributing to this? > > Any debugging advice would be gratefully received; other than this in dmesg: > > nfs: server flash not responding, still trying > nfs: server flash not responding, still trying > nfs: server flash OK > nfs: server flash OK > > > there is nothing in the kerenl logs. > > Regards, > > Richard > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
