Hard lockups solved

Hard lockups solved

[Tom Leete]

Hi,

My lockup problems started increasing in frequency, and it
became obvious that they were independent of the kernel I
booted. The shoe dropped, nic was failing. It's salvage now.

The bizarre shift errors on ftp are gone, so the data I sent
is irrelevant to the kernel.

The soft hangs I was getting were real, though perhaps
encouraged by nic failure. Your net/ipv4/tcp.c patch from
the NE2000 thread cured them even before I found the
hardware fault. Has that patch gone to the queue? I
recommend it.

Thanks,
Tom
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Re: Hard lockups solved

[David S. Miller]

   Date: Mon, 13 Nov 2000 18:05:24 -0500
   From: Tom Leete <tleete@mountain.net>

   Your net/ipv4/tcp.c patch from the NE2000 thread cured them even
   before I found the hardware fault. Has that patch gone to the
   queue? I recommend it.

The bugs I was "fixing" there were due to problems in wait queue
exclusivity nesting.  We instead fixed wait queue exclusivity nesting
so it actually worked in test11-pre3, can you see if by itself that
kernel does not show your problems too?

Thanks.

Later,
David S. Miller
davem@redhat.com
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Re: Hard lockups solved

[Tom Leete]

"David S. Miller" wrote:
> 
>    Date: Mon, 13 Nov 2000 18:05:24 -0500
>    From: Tom Leete <tleete@mountain.net>
> 
>    Your net/ipv4/tcp.c patch from the NE2000 thread cured them even
>    before I found the hardware fault. Has that patch gone to the
>    queue? I recommend it.
> 
> The bugs I was "fixing" there were due to problems in wait queue
> exclusivity nesting.  We instead fixed wait queue exclusivity nesting
> so it actually worked in test11-pre3, can you see if by itself that
> kernel does not show your problems too?
> 
> Thanks.
> 
> Later,
> David S. Miller
> davem@redhat.com

Done. Yes, it's fixed in vanilla test11-pre3, to go by
limited testing. ftp, 15 Meg in 4 files -- no deathlike
sleep, md5sums agree. That load would have certainly
triggered the problem before. On to pre5.

Thanks again,
Tom
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