From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Rigg <aldev@sound-man.co.uk>
Subject: Re: Xrun stack trace for 1010LT
Date: Sat, 6 Dec 2008 14:46:37 +0000
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To: Pete <peterpion@yahoo.com>
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On Fri, Dec 05, 2008 at 01:39:33PM -0800, Pete wrote:
> I was confusing the two. Ill work on the kernel over the weekend. In the meantime I recompiled it without the rt patch today and have this in my stack trace:

<snip>
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623776]  [<f88ee8f2>] journal_dirty_data+0xb2/0x250 [jbd]
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623793]  [<f890f8a8>] ext3_journal_dirty_data+0x18/0x50 [ext3]
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623811]  [<f89104b0>] ext3_get_block+0x0/0x100 [ext3]
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623830]  [<f890eb12>] walk_page_buffers+0x32/0x70 [ext3]
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623849]  [<f89116d4>] ext3_ordered_write_end+0x74/0x180 [ext3]
> Dec  5 21:28:31 ubuntu-studio kernel: [ 1115.623866]  [<f890f890>] ext3_journal_dirty_data+0x0/0x50 [ext3]
</snip>
> 
> Several times over.  Would this suggest that the ext3 filesystem is 
> my problem? What is going on exactly?

Looks like ext3 could be a problem. jackd uses /dev/shm as a temporary
filesystem to get round this. You might have to mount the filesystem as
ext2 (or use jackd).

John