linuxaudio.org

On Fri, 2003-05-02 at 11:50, derek holzer wrote:

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> mark,

>

> actually, the idea is to get my jack running with --realtime

> capabilities w/o a system freeze due to kernel 2.4.20 + ext3 problems. 

Sorry, but I missed this point as I got involved a little late and for

that I apologize. This freeze makes sense in light of the 2.4.20/ext3

issue beign known, and switchign to reiserfs would make sense too.
> this will hopefully fix my xrun difficulties. but what you said makes

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> sense, so i changed the fs of my root partition from ext3 to ext2 in the

> /etc/fstab and rebooted. guess what? it still mounted as ext3! why is

> that?!? 

I do not know. It is my understand and my experience that if I change

fstab to say ext2 and reboot, as you did, then df -T will say ext2 and

not ext3. Strange. 
> just to make sure, i issued a "jackstart --realtime -d alsa -d

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> hw", and guess what else? the system froze, just like it should.

Yep, if you are mounted ext3, then the freeze is expected.
>

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> is there another way to mount my root partition as ext2? ...last chance

> before everything gets converted! :-)

Not that I know of.
> and... how would one change the journalling commit time, anyway? 
Not sure. I'm looking at man pages but not spotting how to do it. I have

a vague memory of running across this before, but I don't know where.
There are some kernel patches out there dating back to last year, along

with some technical info, but possibly those require a kernel recompile

which is a pretty drastic step for you to take right now. 
http://lwn.net/Articles/5584/
Here's one interesting thread I found with some interesting info:
https://listman.redhat.com/pipermail/ext3-users/2001-November/002152.htm...
I'll continue to poke around for what I saw. It was when I was first

researching reiserfs.
> another

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> thing you mention in the 'xruns vs disk activity thread' is turning off

> chrond... can you elaborate on that as well, pls?

ps -aux and kill the crond process as a test.
ntsysv on Redhat, turn off crond and/or anacron as a test.
I don't recommend running all the time with cron turned off, but it's

certainly OK to turn it off and see if it effects your low level xruns.