That turned out to be a particularly bad idea. As soon as I executed that on the server, the client's cpu pegged! Despite the fact that there is about 5MB/s transfer over the network, the client is no longer making any progress on the copy. The nfsd processes on the bsd server are still happily chugging away serving data in the same fits and bursts as before, but the linux machine receiving the data doesn't seem to be doing anything with it. I restarted the nfsd and mountd processes, I'll let it run for a bit... Aha. It corrupted data. Now I have to start the copy over again :/ This is not good! Anything else I can try? (Hopefully without making the process fail :-p ) Thanks! Brian Donnell wrote: > When I was experimenting with ZFS over NFS I had similar experiences. > Do me a favor and try something that sounds a little out there. On a > shell on the ZFS machine set up a looping script that executes an ls on > the directory you're writing the file to once every second and watch > your transfer rates. I noticed a marked improvement, but I could never > determine if it was ZFS or the client NFS implementation. > > -- Brian > > On 7/16/07, *Steven Schlansker* <stevenschlansker_at_berkeley.edu > <mailto:stevenschlansker_at_berkeley.edu>> wrote: > > Claus Guttesen wrote: > >> I'm experiencing what (to me) seems to be strange performance with > >> ZFS. I have it set up as follows: > >> > >> [steven_at_universe /universe]$ sudo zpool status > >> pool: universe > >> state: ONLINE > >> I share it over NFS to a linux machine. I'm trying to write a very > >> large (30GB) disk image to it over nfs, and it goes in short fits > and > >> bursts. > >> > >> It copies a few (mega?)bytes of data (not sure how much exactly), and > >> top shows: > > > > How much ram is installed? > > > > 2.5GB, with an Athlon64 3200+ > _______________________________________________ > freebsd-current_at_freebsd.org <mailto:freebsd-current_at_freebsd.org> > mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > <http://lists.freebsd.org/mailman/listinfo/freebsd-current> > To unsubscribe, send any mail to > "freebsd-current-unsubscribe_at_freebsd.org > <mailto:freebsd-current-unsubscribe_at_freebsd.org>" > >Received on Tue Jul 17 2007 - 02:43:34 UTC
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