High CPU - kjournald & kblockd - nice level

[Douglas Furlong]

On Wed, 2004-06-23 at 11:35, Douglas Furlong wrote:
> On Wed, 2004-06-23 at 11:09, PFJ wrote:
> > Hi.
> > 
> > > The other weird thing is that it also happens when I'm doing files
> > > transfers.  If I copy a file from one file system to another or if I scp
> > > a file to the machine, the same thing happens.
> > 
> > Also occurs with DVD writing. As soon as I hit record on k3b, everything
> > becomes sluggish and I just have to leave the machine to it's own
> > devices.
> I have not read your first email, (too lazy atm), but is DMA enabled?
> 
> hdparm -d /dev/hdx (where x is the drive letter for hd's and
> cd's/dvd's).
> 
> In the past if this is not enabled the system performance takes any
> thing up to a 70% hit in performance.
As an afterthought, it may also be worth while running dmesg, and
looking at the output, check to make sure all chipsets are supported,
see if there are any error messages being thrown up.

Doug