Date: Mon, 4 Feb 2013 11:21:12 -0500 From: Paul Kraus <paul@kraus-haus.org> To: zfs-discuss@opensolaris.org, FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: Re: [zfs-discuss] zfs + NFS + FreeBSD with performance prob Message-ID: <509EB11C-E279-44C5-91C2-3A93249919F5@kraus-haus.org> In-Reply-To: <20130131221627.GA91823@pcjas.obspm.fr> References: <20130131221627.GA91823@pcjas.obspm.fr>
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On Jan 31, 2013, at 5:16 PM, Albert Shih wrote: > Well I've server running FreeBSD 9.0 with (don't count / on differents > disks) zfs pool with 36 disk. >=20 > The performance is very very good on the server. >=20 > I've one NFS client running FreeBSD 8.3 and the performance over NFS = is > very good :=20 >=20 > For example : Read from the client and write over NFS to ZFS: >=20 > [root@ .tmp]# time tar xf /tmp/linux-3.7.5.tar=20 >=20 > real 1m7.244s > user 0m0.921s > sys 0m8.990s >=20 > this client is on 1Gbits/s network cable and same network switch as = the > server. >=20 > I've a second NFS client running FreeBSD 9.1-Stable, and on this = second > client the performance is catastrophic. After 1 hour the tar isn't = finish. > OK this second client is connect with 100Mbit/s and not on the same = switch. > But well from 2 min --> ~ 90 min ...:-( >=20 > I've try for this second client to change on the ZFS-NFS server the >=20 > zfs set sync=3Ddisabled=20 >=20 > and that change nothing. I have been using FreeBSD 9 with ZFS and NFS to a couple Mac OS X = (10.6.8 Snow Leopard) boxes and I get between 40 and 50 MB/sec = throughput on a Gigabit ethernet link. Since you have already ruled out = the known sync issue with ZFS and no SSD-based write cache, then perhaps = you are running into an NFS 3 vs. NFS 4 issue. I am not sure if Mac OS X = is using NFS 3 or NFS 4. -- Paul Kraus Deputy Technical Director, LoneStarCon 3 Sound Coordinator, Schenectady Light Opera Company
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