[linux-audio-user] is ext3 ok for real-time / low-latency?

[Frank Barknecht]

Hallo,
Larry Troxler hat gesagt: // Larry Troxler wrote:

> Well, since my installation (mostly RedHat 7.1) was getting to be a big mess, 
> with bits and pieces from different places, I decided the best way to get a 
> working C++ compiler was to get a new drive and do a fresh redhat 8.0 
> installation :-)
> 
> My immediate question: is ext3 bad news for real-time work? I saw some 
> linux-audio-dev list messages from people who were having freezes using it.

I didn't get any freezes with ext3 and all my audio work (jack, Pd,
MusE).

> Should I convert my filesystem back to ext2 (assuming there is a way) or not?

It still is ext2 somehow, because you can mount ext3 filesystems as
ext2 as well. But you can reconvert, I think. 

> Which one in theory (assuming no bugs which seems to be the cause
> for the freeze) should be better for low-latency work?

This seems to change as ext3 evolves. There was a time when it was
faster, currently it seems worse than reiserfs. But I have a lot of
trust in ext3 and I hate having to wait for minutes on e2fsck clean up
after a crash, so I will keep running ext3 instead of reiser or ext2.

I didn't benchmark it, but maybe you can find some on the net.

ciao
-- 
 Frank Barknecht                               _ ______footils.org__