Re: [Condor-users] tuning a file server

[Steffen Grunewald <steffen.grunewald@xxxxxxxxxx>]

On Tue, Aug 02, 2005 at 03:57:54PM +0100, David McBride wrote:
> On Tue, 2005-08-02 at 15:21 +0200, Steffen Grunewald wrote:
> 
> > So at the moment I'm lost: I cannot reboot the server just to put the
> > "elevator=deadline" kernel parameter into action.
> 
> Hi,
> 
> I have discovered[0] that you can switch io-scheduler at run-time on a
> per-block-device basis; no reboot required.

This feature has been announced for 2.7 kernels. I'm not aware of it
for 2.6.8 (the version my distro uses), and /sys/block/sdb/queue is
a directory here.

> [0] http://kerneltrap.org/node/3851

will look at that tomorrow when IO'm back at my desk

Thanks, Steffen