Re: low(er) disk performance with sched_4bsd then with sched_ule

From: Kris Kennaway <kris_at_obsecurity.org>
Date: Fri, 16 Sep 2005 11:23:46 -0400
On Fri, Sep 16, 2005 at 04:37:26PM +0200, Oliver Lehmann wrote:
> Hi Kris,
> 
> Kris Kennaway wrote:
> 
> > What about using schedgraph as I suggested previously?
> 
> After I installed py24-tkinter and all the dependencies, I recompiled the kernel and so on, but it seems not to work:
> 
> root_at_nudel olivleh1> dd if=/dev/zero of=/mnt/files/test.dd bs=64k count=32000
> 32000+0 records in
> 32000+0 records out
> 2097152000 bytes transferred in 379.623777 secs (5524290 bytes/sec)
> root_at_nudel olivleh1> ktrdump -ct > ule.ktr.out
> root_at_nudel olivleh1> grep ULE /usr/src/sys/i386/conf/NUDEL 
> options         SCHED_ULE

And you enabled the correct KTR options in your kernel, right?

Kris
Received on Fri Sep 16 2005 - 13:24:04 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:38:43 UTC