On Tue, May 22, 2007 at 03:23:46PM +0100, Dick Davies wrote:
> <allyourbase>
> Take off every ZIL!
>
> http://number9.hellooperator.net/articles/2007/02/12/zil-communication
Interesting. With "set zfs:zil_disable = 1", I get:
1. [copy 400MB of gcc-3.4.3 via rsync/NFS]
# mount file-server:/opt/test /mnt
# rsync -vaHR --delete --stats gcc343 /mnt
...
(old) sent 409516941 bytes received 80590 bytes 5025736.58 bytes/sec
(new) sent 409516941 bytes received 80590 bytes 7380135.69 bytes/sec
2. [copy 400MB of gcc-3.4.3 via tar/NFS to ZFS file system]
# mount file-server:/opt/test /mnt
# time tar cf - gcc343 | (cd /mnt; tar xpf - )
...
(old) 419721216 bytes in 1:08.65 => 6113928.86 bytes/sec
(new) 419721216 bytes in 0:44.67 => 9396042.44 bytes/sec
> </allyourbase>
>
> On 22/05/07, Albert Chin
> <[EMAIL PROTECTED]> wrote:
> >On Mon, May 21, 2007 at 06:11:36PM -0500, Nicolas Williams wrote:
> >> On Mon, May 21, 2007 at 06:09:46PM -0500, Albert Chin wrote:
> >> > But still, how is tar/SSH any more multi-threaded than tar/NFS?
> >>
> >> It's not that it is, but that NFS sync semantics and ZFS sync
> >> semantics conspire against single-threaded performance.
> >
> >What's why we have "set zfs:zfs_nocacheflush = 1" in /etc/system. But,
> >that's only helps ZFS. Is there something similar for NFS?
> >
> >--
> >albert chin ([EMAIL PROTECTED])
> >_______________________________________________
> >zfs-discuss mailing list
> >zfs-discuss@opensolaris.org
> >http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
> >
>
>
> --
> Rasputin :: Jack of All Trades - Master of Nuns
> http://number9.hellooperator.net/
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>
--
albert chin ([EMAIL PROTECTED])
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