problem of disk threads whith every rt kernel, except with kernel-2.6.31.11!

Ricardo Lameiro ricardolameiro at gmail.com
Sat Jan 29 22:02:34 UTC 2011


Have you tried it without RT kernel?


2011/1/29 Victor henri <nadaeck at hotmail.com>

>  (I've posted this already without subject; i allow myself to repost to
> make it; please ignore the other one; i apologize for the mistake i made)
>
> Hello:
>
> I have a problem since almost one year now. I'm using linuxsampler, that
> allows that load very big sample files (one of my .gig file is 1.6 G for
> only one piano sound); this use disk streaming.
>
> I always have such problem only when i use the RT kernel :
>
> 0x7f6eef1ee860 Disk stream not available in time!
>
> After several message slike that, i get :
>
> DiskThread: there was no free slot
> Disk stream order failed!
>
> Then the sounds clicks, then stops for 10 to 20 seconds, then i can play
> again, then it'll come again...
>
> This arrives on both Gentoo and Ubuntu 10.10 64 bits; BUT there is one
> thing however : there is ONE kernel with wich it doesn't arrive : the
> 2.6.31.11-rt from Ubuntu lucid (RT kernel was in the repositories in Ubuntu
> untill 10.04 Lucid, then now i have to either take it  from Abogani's ppa
> (for lucid or natty) or compile it myself with the rt-patch from
> kernel.org; i've tried all of that, and nothings works, except for the
> 2.6.31.11-rt from in the repositories of Ubuntu Lucid-updates)
>
> Here are some technical details:
>     - I have laptop Asus Core i7 for gamers (supposed to be very fast);to
> be noted : it also happens on another Asus Core I7, but NOT on an another
> Asus Core i3; 4Go RAM;
>     - when i compile myself i choose : real-time preemption (of course) and
> Timer frequency 1000 Hz, either on Gentoo or on Ubuntu with kernel from
> kernel.org; nothing else is changed in Ubuntu.
>     - i've tried with the no-op cfq scheduler also; i use ext3 on Gentoo
> and ext4 on Ubuntu;
>     - have a nvidia graphic card, but no proprietary driver installed....
>
> i have posted that at the linuxsampler mailing list without succes....
>
> Could please someone help me? i LOVE RT-kernel and its capabilities....
> What is it in the linux-rt package that is not somewhere else and that
> allows things to work for me....?
>
> Thank you
>
> Victor
>
>
>
>
>
>
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-- 
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Bassoon / Contra-bassoon
http://myspace.com/ricardolameiro
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