Re: Interrupt latency problems

From: David Leimbach <leimy2k_at_mac.com>
Date: Sat, 10 May 2003 16:25:44 -0500
Are you using sysmouse for your mouse protocol for X?  This used to 
happen to me
all the time in FBSD 4.x before I changed to sysmouse.

Dave
On Saturday, May 10, 2003, at 10:40 AM, Lars Eggert wrote:

> On 5/10/2003 5:37 AM, 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?
>
> I do, but with SCSI disks and on an SMP box. So I doubt it's the ATA 
> subsystem alone.
>
> Lars
> -- 
> Lars Eggert <larse_at_isi.edu>           USC Information Sciences 
> Institute
> <smime.p7s>
Received on Sat May 10 2003 - 12:29:11 UTC

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