Alan Somers wrote: >On Tue, Aug 2, 2016 at 2:49 AM, Gerrit Kühn <[email protected]> wrote: >> Hi all, >> >> I already reported this issue here a year ago and unfortunately was not >> able to fix it back then. Now I had another run at it, using two recent >> 10.3-machines with a direct 10G link. I still see nfs is painfully >> slow (around 20-80MB/s). I tried both nfsv3 and nfsv4, with almost the same >> results. Everything I tried so far (mtu size, wcommitsize, readahead...) >> only makes things worse or at least not much better. >> Moving data in different ways (scp, ggate) is much faster, so plain >> network speed should not be an issue. >> >> Is there anyone around here who can confirm that nfs can go faster over >> 10G links? >> Any hints for further tuning/debugging are greatly appreciated. >> I can't help much, but a couple of things you can try: - Disable TSO - Turn off/reduce interrupt moderation on the net interface. (NFS perf. depends on response time and anything that delays interrupt servicing will slow it down.)
Good luck with it, rick >> >> cu >> Gerrit > > >I can get 1GB/s over NFS on a 10G link, so it's not always slow. >There's probably something about your setup that's slowing it down. <What is your NFS client? If Linux, make sure that you're using the >"async" mount option instead of "sync". What benchmark are you using <to measure that speed? Did you remember to start lockd and statd? If >you post your /etc/exports and the client's /etc/fstab, that might >reveal something. >_______________________________________________ >[email protected] mailing list >https://lists.freebsd.org/mailman/listinfo/freebsd-net<https://lists.freebsd.org/mailman/listinfo/freebsd-net> >To unsubscribe, send any mail to "[email protected]" _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[email protected]"
