Date: Sat, 10 May 2003 14:34:26 -0700 From: Lars Eggert <larse@ISI.EDU> To: David Leimbach <leimy2k@mac.com> Cc: current@freebsd.org Subject: Re: Interrupt latency problems Message-ID: <3EBD7062.20607@isi.edu> In-Reply-To: <F520D3DB-832D-11D7-9B15-0003937E39E0@mac.com> References: <F520D3DB-832D-11D7-9B15-0003937E39E0@mac.com>
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[-- Attachment #1 --]
David Leimbach wrote:
> 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.
Yes, but I used that under 4.X also, and didn't see these issues.
> 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 Eggert <larse@isi.edu> USC Information Sciences Institute
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