Re: Deadlocks! help, please!

[Ryusuke Konishi <ryusuke-sG5X7nlA6pw@public.gmane.org>]

Hi,

On Tue, 2008-01-22 at 00:00 +0100, Gergely Gábor wrote:
> > Here I attach a test patch to fix the problem.
> > Could you try the patch ?
> > 
> > So, if rtorrent (or something else) hang again, then
> > send me a copy of /proc/slabinfo, please.
> It hang again,

Ugh! OK, I'll continue to work on it.

> but i have to note, that i had to respin kernel, 
> as I used SLUB before (some make oldconfig possibly 
> defaulted to that or suggested that), and had no /proc/slabinfo.
> With SLUB even with the patch in place, the machine froze,
>  and with SLAB i did a fine ~6 hour uptime, and was just telling
>  a friend that nilfs is just right now, when it stuck :)
> the hang occured when epiphany ( based on gecko. memleaker :( ) 
> eat up a lot of ram, and I was just about to close it. 
> some massive swapping happened, and the fs hang.
> I attach many stuff, might they help: a log with call trace, 
> a copy of slabinfo and the kernel config, might that be of any use.

Thanks a lot for providing various information.
Actually I have a machine with a SLUB configured kernel,
but it's not so problematic. I wonder why NILFS hangs so offten 
in your environment :)
Joking aside, one of key differences that my colleague 
pointed out, is that your kernel is non-smp one.
We'll try your config to get better environment to debug.

Best regards,
-- 
Ryusuke Konishi
NILFS team NTT
http://www.nilfs.org/