Interrupt latency problems

[Bosko Milekic]

On Sat, May 10, 2003 at 01:37:27PM +0100, Paul Richards wrote:
> I'm having real problems with current with heavy disk activity.
> 
> When working in X and updating ports which causes a lot of disk activity
> I get *very* poor interactive responses. Keypresses can not appear for
> seconds and mouse movement is very jerky and unresponsive.
> 
> I'm wondering if something is holding locks a long time in interrupt
> handlers and causing mouse/keyboard interrupts to be lost?
> 
> Since this is caused by heavy disk activity then my first guess would be
> the ATA driver.
> 
> Is anyone else seeing anything like this?
> 
> -- 
> Paul Richards <paul at freebsd-services.com>
> FreeBSD Services Ltd

  What scheduler are you running with?  Try switching ULE <-> 4BSD and
  see if it changes anything.

-- 
Bosko Milekic
bmilekic at unixdaemons.com
bmilekic at FreeBSD.org