5.3-RELEASE: WARNING - WRITE_DMA interrupt timout - what does it mean?

[Søren Schmidt]

Robert Watson wrote:
> On Wed, 10 Nov 2004, Søren Schmidt wrote:
> 
> 
>>>I'm still a bit skeptical that the task queue is at fault -- I run my
>>>notebook with continuous measurement of the latency to schedule tasks,
>>>generating a warning for any latency > .5 seconds, and the only time I
>>>ever see that sort of latency is during the boot process when ACPI has
>>>scheduled a task to run, but the task queue thread has not yet been
>>>allowed to run:
>>
>>Right, the timeout is 5 secs. I havn't looked into how the taskqueues
>>are handled recently, but in case of ATA read/writes it is the
>>bio_taskqueue handled by geom thats in use not the catchall ones, does
>>your timing cover that as well? 
> 
> 
> Nope -- I had assumed that the suggested task problems in question was the
> use of taskqueue_enqueue() in ata-queue for the timeout, rather than the
> bio_taskqueue() ata_completed() call.

OK, then there is no idea in trying the patch, it wont tell us anything.

-- 

-Søren