Bad berformance with io scheduler cfg (which might be standard in generic kernel)

Binary package hint: linux-image-2.6.17-10-generic

When using the i686 kernel in Dapper or when I use the generic kernel in Edgy my system performs very badly! It is as if the apps would only be allowed to use a short frame of kernel time every 4 seconds or so.

That's why I switched to the i386 kernel, which works fine.

Worked fine, I mean, until I read about tweaking kernel performance by turning on the cfq io scheduler in the kernel at boot time by appending elevator=cfq.

Here I was again, experiencing the problems I had with i686 and generic kernels on the i386 kernel now.

This is, why I suspect that in generic and i686 kernels the same kernel option might be activated by default and for that reason these kernels produce the same problems. I read that redhat is using this in the default kernel, so Ubuntu might as well. So let me tell you, this scheduler is buggy! DON'T USE IT! It is at least buggy on my hardware and a friend of mine seems to experience similar problems. I will attach an lshw.