Server = Fedora 17 running on a MBP4,1 with 4GB RAM and a WDC Scorpio Blue. NFS setup as async,rw in /etc/exports and in /etc/sysconfig/nfs I set RPCNFSDCOUNT=32. Underlying file system is XFS on LVM on LUKS.
Client = Mac OS X 10.6.8 and 10.7.4, on MBP8,2 with 8GB RAM and a WDC Scorpio Black. NFS mount is: sudo mount_nfs -o resvport,rsize=32768,wsize=32768 192.168.1.137:/home/chris/Music /Volumes/NFS Reads from server appear to saturate the server disk at ~70MB/s. For writes, it oscillates dramatically, from 0MB/s to 110MB/s. I think what's happening is the server caches til RAM is full, and then gets stuck for a bit while it's flushing to disk and isn't receiving data for a few seconds. I don't know why it doesn't just settle down instead. Could be LUKS encryption, as the CPU in the MBP4,1 doesn't support AES-NI. With NFS set to sync, I get substantially less performance, around 30MB/s. AFP is around 34MB/s. In all cases, the files are over 10MB, so random read/writes isn't a factor. I am not using jumbo frames. The router is a Linksys WRT600N running dd-wrt, in a fairly stock configuration. Cables are CAT5e, and one of them is kinda crap. So, the fact I can sustain 110MB/s until the server cache is full, without much in the way of network optimization and all commodity hardware, is pretty interesting. Chris Murphy _______________________________________________ MacOSX-admin mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-admin
