Thanks a lot Felix, just as an FYI for others: This helped me a lot. Writing this from an old (was a 08.04 IIRC) and often updated Ubuntu server 12.04 installation and I switched from the server kernel to the lowlatency one. Now I can run updatedb and start Thunderbird while music is running. I'm embarrassed to say that, but I haven't been able to do that (without a lot of ionice -c3) for quite some time. This makes this computer usable for me again. I just hope that the nvidia driver stops making problems with my onboard card soon and my old server & desktop is golden again. :)
Thanks a lot Felix, just as an FYI for others: This helped me a lot. Writing this from an old (was a 08.04 IIRC) and often updated Ubuntu server 12.04 installation and I switched from the server kernel to the lowlatency one. Now I can run updatedb and start Thunderbird while music is running. I'm embarrassed to say that, but I haven't been able to do that (without a lot of ionice -c3) for quite some time. This makes this computer usable for me again. I just hope that the nvidia driver stops making problems with my onboard card soon and my old server & desktop is golden again. :)