On Saturday, 18 December 1999 at 20:16:53 -0800, Matthew Dillon wrote:
>> I've just upgraded to -CURRENT as of yesterday, and I'm noticing a
>> number of occasions where all activity ceases for a second or two at a
>> time; it seems to be related to IDE disk activity with the new ATA
>> driver, but I don't have much evidence. I'm running a SiS 5591
>> chipset. Has anybody else seen something like this?
>
> It's possible that the blockages you are seeing are due to the ATA
> driver, but it's also possible that they are due to a bug in the
> buffer cache flushing code which the following patch fixes. So try
> the patch and see if that fixes your problem. If it doesn't then
> we can at least rule it out as being the cause of the problem you
> are seeing.
Thanks. I've put in the patch, but I'm still seeing the problems. It
seems to be related to SCSI activity (I'm currently performing a
backup on a DLT drive, and apart from that very little disk I/O). Any
other ideas? It seems to me as if the whole system freezes
(keystrokes don't echo, for example), so possibly something is going
into splhigh for too long.
Greg
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