Re: [linux-audio-user] 2.6.15.4, realtime-lsm, jackd -R, system performance down!

From: Ismael Valladolid Torres <ivalladt@email-addr-hidden>
Date: Mon Feb 13 2006 - 23:28:44 EET

Lee Revell escribe:
> On Mon, 2006-02-13 at 13:08 +0100, Ismael Valladolid Torres wrote:
> > fons adriaensen escribe:
> > > > How much memory does your machine have? Is it swapping when this
> > > > slowdown occurs?
> > >
> > > Good question. This really looks like an 'out of memory' problem.
> >
> > Just 160MB but then why does it swap only when jackd is running
> > realtime?
>
> Because jackd only locks all its memory in realtime mode.

Clearly this is my problem. If I tell jackd not to lock memory at all,
then applications open succesfully even if in realtime mode
but... xruns are back!

I think I'll try to get more memory. This G3 uses PC100 SDRAM, more
difficult to find right now even in eBay and at prices like DDR2 new.

> Try adding this line to /etc/security/limits.conf:
>
> * stack hard 512
>
> then reboot. This will save you 7.5MB of unswappable memory per thread.

I'll give this a try and tell you all.

Cordially, Ismael

-- 
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Received on Tue Feb 14 00:15:10 2006

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