Andre Hedrick wrote:
> On Thu, 15 Jun 2000, Christopher Zimmerman wrote:
> > This deadlock has been around since 2.4.0-test1. However, sine 2.4.0-test1
> > there has been a large improvement. I have to try much harder now to kill my
> > boxes. As for the IRQ state I'm not sure I've never checked. Since my test
> > machines are fairly stable I'm actually using them to do some massive data
> > processing. Once all my processes have completed I'll try the cat /dev/hda >
> > /dev/null & thing and monitor the IRQ state. Actually come to think of it
> > how do you find out the IRQ state for a particular device?
> Interesting that is when I began getting nailed for deadlocks also...
> The driver has to export it to a procfs file for reading.
> Currently PDC2026x cards and CMD64x cards do this in ATA.
> Andre Hedrick
> The Linux ATA/IDE guy
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Okay I've done some more testing today and have narrowed the problem to the
3ware and adaptec aic-7896 cards. I ran my test on a box that has an integrated
Intel 82371AB ide controller and a 4-port 3ware card installed. I ran multiple
cats of the hda > /dev/null and 5 concurrent bonnies without a hitch. The
deadlock only seems to arise on systems with both aic7xxx and 3ware cards
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