geom_sched and ZFS

Jeremy Chadwick freebsd at jdc.parodius.com
Fri Feb 4 21:30:10 UTC 2011


On Fri, Feb 04, 2011 at 05:28:22PM +0000, Bruce Cran wrote:
> On Fri, 4 Feb 2011 08:40:03 -0800
> Freddie Cash <fjwcash at gmail.com> wrote:
> 
> > Just curious if anyone has played around with geom_sched underneath
> > ZFS, and found it to be extremely worthwhile, or not worth the bother,
> > or if if it should be avoided altogether.
> 
> ZFS has its own I/O scheduler so shouldn't have any use for geom_sched.
> See http://www.solarisinternals.com/wiki/index.php/ZFS_Performance for
> details.

And furthermore, gsched greatly angers things like sysinstall.

-- 
| Jeremy Chadwick                                   jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.               PGP 4BD6C0CB |



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