Re: NFS client performance slow with ls
Problem solved.
For historic reasons and our usage patterns, our default mount
options turn off attribute caching with "noac". This was because
(tested several years ago) we'd make changes on one machine and it
would take 15-45 seconds to be noticed by others. This delay time,
even with attribute caching enabled, seems to no longer exist. We
therefore have removed the 'noac' from the mount options and things
are working as expected.
On Fri, Feb 11, 2011 at 03:47:59AM -0600, Chris Davies wrote:
> owen@illinois.edu wrote:
> > I've come across a problem with either Debian or recent Linux
> > kernels with NFS that I am really confused by. I have an NFS server
> > (Debian Squeeze) exporting to a large number of users. While setting
> > up a new computer (Squeeze) as an NFS client, I noticed that it was
> > taking ~10 seconds to run 'ls -l' on a directory with ~900 entries.
> > This seemed a bit slow. I ran 'ls' a few times with 'time':
>
> Do you have enough rpcd threads (kernel processes) running?
> - grep RPCNFSDCOUNT /etc/default/nfs-kernel-server
> - ps -ef | grep '\[nfsd\]' | wc -l
>
> Chris
>
>
> --
> To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
> Archive: [🔎] f7df28xb4t.ln2@news.roaima.co.uk">http://lists.debian.org/[🔎] f7df28xb4t.ln2@news.roaima.co.uk
>
--
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
<> Brynnen Owen ( this space for rent )<>
<> owen@illinois.edu ( )<>
<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Reply to: