Re: 2.5.48 hangs during boot

From: Matthew Dobson (colpatch@us.ibm.com)
Date: Fri Nov 22 2002 - 14:32:34 EST


William Lee Irwin III wrote:
> On Thu, Nov 21, 2002 at 05:58:37PM -0800, Matthew Dobson wrote:
>
>>Hello all,
>> 2.5.48 + Bill/Martin's noearlyirq patch hangs on boot on our NUMA-Q
>>machines. It boots normally up to
>>TCP: Hash tables configured (established 524288 bind 65536)
>>NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
>>VFS: Mounted root (ext2 filesystem) readonly.
>>Freeing unused kernel memory: 268k freed
>>Then it *VERY* slowly proceeds to output a few more lines before hanging
>>completely. The lines come out one at a time, with large time delays
>>between each line. The last bit of output I get is the enabling swap line.
>>The -mm1 patch fixes this problem, and I'm in the process of determining
>>exactly what fixes it. Any input/ideas would be greatly appreciated.
>>Thanks!
>>-Matt
>
>
> get the axboe/akpm fixes for the elevator deadlock and/or an intermediate
> bk tree. This is an io scheduling issue.
>
>
> Bill

Yep.. the axboe-scsi patch from the mm1 tree fixes our problem...

Linus, you'll make a bunch of NUMA-Q developers (and likely many other
people) really happy if you add that patch to the mainline.

Cheers!

-Matt

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