One thing that is fairly obvious if you know where to look, is that your server needs to have more threads running.
The line... th 8 0 3828.727 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Indicates this. The "th" means "thread(s)" and the "8" is how many are running. The " 3828.727" is telling you a significant number of instances have occurred in which I/O was waiting for a thread in order to be serviced and this complete. First order of business should be to increase this. A basic rule of thumb is one thread for each client mount. 10 clients for one export, 10 or more threads. 10 clients for two exports on the server, 20 or more threads and so on. Autofs will help since there is an upper limit (256?) I believe, and the automatic un-mounting of unused exports will free up theads for you. Anyway, that will be one thing to move out of your way before you do any real testing. Unless something has changed, you'll have to reboot to clear those numbers out. Good luck Corey On Mon, Oct 10, 2011 at 6:23 AM, Akemi Yagi <amy...@gmail.com> wrote: > On Mon, Oct 10, 2011 at 2:39 AM, dayangkuncn <dayangku...@yahoo.com.cn> > wrote: > > Guys, > > > > I'm trying to measure how much data transferred between my NFS server > > machine and a NFS client machine in each second while doing some NFS > > file copy ops, I'm trying to read the "/proc/net/rpc/nfs" file, but > > could not figure out what the numbers mean, following are some sample > > output from the "/proc/net/rpc/nfs" file on both the NFS server machine > > and the NFS client machine: > > > (snip) > > My operating system is RHEL5.5, could someone help me to read these > > numbers ? > > Try the nfsstat command. 'man nfsstat' shows you available options. > > Akemi > > _______________________________________________ > rhelv5-list mailing list > rhelv5-list@redhat.com > https://www.redhat.com/mailman/listinfo/rhelv5-list >
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