Re: [zfs-discuss] zfs + NFS + FreeBSD with performance prob

2013-02-05 Thread Albert Shih
 Le 04/02/2013 ? 11:21:12-0500, Paul Kraus a écrit
> 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.
> > 
> > The performance is very very good on the server.
> > 
> > I've one NFS client running FreeBSD 8.3 and the performance over NFS
> > is very good :
> > 
> > For example : Read from the client and write over NFS to ZFS:
> > 
> > [root@ .tmp]# time tar xf /tmp/linux-3.7.5.tar
> > 
> > real1m7.244s user0m0.921s sys 0m8.990s
> > 
> > this client is on 1Gbits/s network cable and same network switch as
> > the server.
> > 
> > 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 ...:-(
> > 
> > I've try for this second client to change on the ZFS-NFS server the
> > 
> > zfs set sync=disabled
> > 
> > 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

Thanks for your answer.

Can you give me the average ping time between you'r client and NFS server ? 

Regards.

JAS
-- 
Albert SHIH
DIO bâtiment 15
Observatoire de Paris
5 Place Jules Janssen
92195 Meudon Cedex
Téléphone : 01 45 07 76 26/06 86 69 95 71
xmpp: j...@obspm.fr
Heure local/Local time:
mar 5 fév 2013 16:15:11 CET
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Re: [zfs-discuss] zfs + NFS + FreeBSD with performance prob

2013-02-04 Thread Paul Kraus
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.
> 
> The performance is very very good on the server.
> 
> I've one NFS client running FreeBSD 8.3 and the performance over NFS is
> very good : 
> 
> For example : Read from the client and write over NFS to ZFS:
> 
> [root@ .tmp]# time tar xf /tmp/linux-3.7.5.tar 
> 
> real1m7.244s
> user0m0.921s
> sys 0m8.990s
> 
> this client is on 1Gbits/s network cable and same network switch as the
> server.
> 
> 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 ...:-(
> 
> I've try for this second client to change on the ZFS-NFS server the
> 
>   zfs set sync=disabled 
> 
> 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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