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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