On Thu, 15 Apr 2010, Stefan Krüger wrote: > Hello list, > > I have some really strange nfs performance issues > > NFS server is Fedora 12, running > * kernel-2.6.32.11-99.fc12.x86_64 and > * nfs-utils-1.2.1-4.fc12.x86_64 > * nfs shared /home is ext4 with default mount options > > /etc/exports: > /home 192.168.1.0/255.255.255.0(rw,sync) > > nfs and nfslock are up and running > > Nothing else touched on the server nfs-wise. > > NFS client is Mac OS X, version 10.6.3 > > My /home dir is automounted on the Mac with the following mount options: > * nosuid,nodev,resvport,rdirplus,rwsize=1048576 > (nfsv3 and tcp are default, I have also tried udp, and with and without > rdirplus, with different read/write sizes (started with 32k, less for udp, > and then cranked it up to 1m to make the beachball appear less often), but I > still have issues no matter which options I chose) > > Anyway, I'm stuck now, surfing the web with Safari is a very unpleasant > experience on nfs, beachball every now and then together with a huge amount > of network traffic (RX with 20MB/s+ peaks), not unusual to see several > gigabytes received after some minutes browsing, XCode shows a ''The > document "SomeFile.m" could not be saved.''-error after some edits, Opera > hangs for minutes when closing, etc etc. > > It's horrible :( > > Another example, extracting > http://www.bignerdranch.com/solutions/Cocoa-3rd.tgz took over 3min! > > $ time tar xzf Cocoa-3rd.tgz > 0.169u 3.198s 5:51.10 0.9% 0+0k 1+6972io 0pf+0w > $ time rm -rf Solutions-Cocoa-3rd/ > 0.014u 0.477s 0:45.59 1.0% 0+0k 1+1io 0pf+0w > > So any help or hints really appreciated So, no answers yet, but I did some more tests, i.e. I tried extracting the Cocoa-3rd.tgz (2.2MB, 12MB untar'ed) on FreeBSD 8.0-REL (running inside VMWare though), and still it was much faster (5:51.10 vs 0:09.35) than extracting on bare metal fedora12: $ time tar xfz Cocoa-3rd.tgz 0.104u 1.474s 0:09.35 16.7% 0+0k 0+4896io 0pf+0w $ time rm -rf Solutions-Cocoa-3rd 0.006u 0.160s 0:01.24 12.9% 0+0k 0+0io 0pf+0w I captured the nfs traffic with tcpdump (tcpdump -i eth1 -s 0 -w nfs.out host nfssrv and port 2049) on both freebsd8 (interface for freebsd is a bit different ofc) and fedora12 while running tar xfz Cocoa-3rd.tgz Solutions-Cocoa-3rd/02_GetStarted (which extracts just a couple of files) , you can find them here: Fedora 12 tcpdump -> http://www.dpaste.org/5cvp/ FreeBSD 8 tcpdump -> http://www.dpaste.org/uCGX/ Honestly, I don't see anything suspicious, but maybe you guys will catch something Anyway, if you need more info or want to me to test something else, just drop me a line TIA -- 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
