Share your knowledge at the LQ Wiki.
Go Back > Forums > Linux Forums > Linux - General
User Name
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.


  Search this Thread
Old 09-20-2009, 02:47 PM   #1
Registered: Dec 2001
Location: /mnt/UNV/Mlkway/Earth/USA/California/Silicon Valley
Distribution: Kubuntu, Debian Buster Stable, Windoze 7
Posts: 684

Rep: Reputation: 56
real time kernel not real time, still xruns in Jackd


I am having trouble with interruptions and xruns in Jackd. I had hundrets of xruns in Jackd before on the non real time kernel (standard Debian, Lenny 5.0). Now I went through the pains to compile my own real time (preempt) and STILL not success, music playback still jerks from time to time. Xruns are still there, although this computer (a thinkpad T61, Dualcore 2 x 2.4 ghz) should be able for flawless playback.

The xruns are regular, about every 1 minute there is a audible jerk and after about 20 minutes of listening to music, I have raked up almost 100 xruns.

How can I find out what is causing this? is there something wrong with the IRQs on my system? Graphic card driver? The Nvidia card ( Quadro NVS 140M ) uses a proprietary one (*shudder*), and although it should be able to handle compiz with nothing as a shrug, it runs it like a pig (very low framerate, jerky cube rotation). Might this be the culprit?
Even my little Asus eee can do smooth cube rotation, and that one has a shared graphics card, the NVIDIA is 10 times more powerful than that.




Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need some detail information on Hard Real-Time Systems and Soft real-Time Systems. LinuxInfo General 3 09-22-2008 03:25 AM
Real Time Clock & Real Time Timer jiramak Linux - Newbie 1 09-05-2007 06:43 PM
LXer: Real-time garbage collection with Real-time Java LXer Syndicated Linux News 0 05-05-2007 12:16 PM
LXer: Real-time Linux gains real-time JVM LXer Syndicated Linux News 0 10-12-2006 10:54 AM
LXer: Real Time Coming to Linux Real Soon LXer Syndicated Linux News 1 08-23-2006 06:30 PM > Forums > Linux Forums > Linux - General

All times are GMT -5. The time now is 06:28 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration