* 2.4.20-pre7-ac3 IDE taskfile io woes
@ 2002-09-30 5:10 Paul Cassella
2002-09-30 12:41 ` Alan Cox
0 siblings, 1 reply; 2+ messages in thread
From: Paul Cassella @ 2002-09-30 5:10 UTC (permalink / raw)
To: linux-kernel
I turned on taskfile io on my last kernel, and had some stability
problems. This is ia32, all ide but with ide-scsi.
I experienced severe performance disruptions followed by what appeared to
be a system hang twice. Before that, I was recieving an "hdd: lost
interrupt" message every few hours, and the system felt sluggish. (The
ide-scsi device is hdc, not hdd.) I have not had these problems with a
kernel compiled without taskfile io.
Is this a known problem? I can provide more information if it would be
helpful.
I also got the following, which looks like what Nick Evgeniev reported May
24 (2.4.19-pre8 ide bugs). Andre said to him
> Obviously you have not enable taskfile IO, if you have then you have my
> attention.
As I had enabled taskfile IO, I figured I'd mention this:
11:42:29 bug: kernel timer added twice at c01b0107.
c01b00b8 T ide_set_handler
c01b0110 t atapi_reset_pollfunc
11:45:35 scsi0 channel 0 : resetting for second half of retries.
11:45:35 SCSI bus is being reset for host 0 channel 0.
11:45:35 hdd: ide_set_handler: handler not null; old=c01b0110, new=c01b1474
c01b0110 t atapi_reset_pollfunc
c01b1474 T task_in_intr
11:45:35 bug: kernel timer added twice at c01b0107.
11:47:19 kernel: scsi0 channel 0 : resetting for second half of retries.
11:47:19 kernel: SCSI bus is being reset for host 0 channel 0.
11:47:19 kernel: hdd: ide_set_handler: handler not null; old=c01b0110, new=c01b177c
c01b0110 t atapi_reset_pollfunc
c01b177c T task_out_intr
--
Paul Cassella
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 2.4.20-pre7-ac3 IDE taskfile io woes
2002-09-30 5:10 2.4.20-pre7-ac3 IDE taskfile io woes Paul Cassella
@ 2002-09-30 12:41 ` Alan Cox
0 siblings, 0 replies; 2+ messages in thread
From: Alan Cox @ 2002-09-30 12:41 UTC (permalink / raw)
To: Paul Cassella; +Cc: linux-kernel
On Mon, 2002-09-30 at 06:10, Paul Cassella wrote:
> I experienced severe performance disruptions followed by what appeared to
> be a system hang twice. Before that, I was recieving an "hdd: lost
> interrupt" message every few hours, and the system felt sluggish. (The
> ide-scsi device is hdc, not hdd.) I have not had these problems with a
> kernel compiled without taskfile io.
taskfile I/O write is broken and loses IRQ's. Non taskfile I/O write
should be fine. Thats one of the known problems that needs debugging
> 11:42:29 bug: kernel timer added twice at c01b0107.
Thats always a bug.
>
> c01b00b8 T ide_set_handler
> c01b0110 t atapi_reset_pollfunc
>
> 11:45:35 scsi0 channel 0 : resetting for second half of retries.
> 11:45:35 SCSI bus is being reset for host 0 channel 0.
> 11:45:35 hdd: ide_set_handler: handler not null; old=c01b0110, new=c01b1474
We ended up trying to add a handler before we had finished getting rid
of the previous one.
^ permalink raw reply [flat|nested] 2+ messages in thread
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