Date: Mon, 16 Jul 2007 23:45:11 -0400 From: "Brian Donnell" <bdonnell@gmail.com> To: "Steven Schlansker" <stevenschlansker@berkeley.edu> Cc: freebsd-current@freebsd.org Subject: Re: Strange performance characteristics with ZFS Message-ID: <1c5c32890707162045u9d56cfeq2f7430ddddd55418@mail.gmail.com> In-Reply-To: <469C3900.5020703@berkeley.edu> References: <2978EDA9-D393-434C-B734-2DE188631761@berkeley.edu> <b41c75520707161316q5a6f9940q40e7281e1baffbfc@mail.gmail.com> <469C3900.5020703@berkeley.edu>
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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@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@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@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >
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