<html> <head> <style></style> </head> <body class='hmmessage'> > Subject: RE: problem of disk threads whith every rt kernel, except with kernel-2.6.31.11! - Was: Re: Kernel configuration - Was: Re: (No subject) > From: ralf.mardorf@alice-dsl.net > To: ubuntu-studio-users@lists.ubuntu.com > Date: Sun, 13 Feb 2011 09:28:49 +0100 > > On Sun, 2011-02-13 at 09:24 +0100, Ralf Mardorf wrote: > > On Sat, 2011-01-29 at 22:02 +0100, Victor henri wrote: > > > 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 > > > > Did you test what will happen, if you copy the configuration of the > > 2.6.31.11-rt from Ubuntu Lucid to the source directory, instead of > > making your own configuration? Rename it from 'config-2.6.31.11-rt' to > > '.config' in the source directory, before you build the kernel. If you > > run make oldconfig nothing should be asked. > > > > Hth, > > > > Ralf Hello Ralph Yes i did, without succes; i'll retry in case i did something wrong... but i did... On the other hand, i've asked the question ate the RT kernel mailing list; one of the devolopers of the rt kernel himself tried to help me; but since i was not able to give enough debug info (i need a serial port to get the debug info and i don't have it), nothing came out of it... I'm curious to see if the new rt-kernel will fix this or not... Victor > > > -- > Ubuntu-Studio-users mailing list > Ubuntu-Studio-users@lists.ubuntu.com > Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-users </body> </html>