Pre-emptible kernels...
Hi,
I just read about pre-emptible kernel support in newer linux kernels. Does kernel pre-emption really attribute to any noticeable performance difference in normal desktop linux boxes? How do I find out if the kernel I'm running has been compiled with pre-emptible support? I'm using Mandrake 10.1 CE Thanks in advance, Harish |
pre-emption is mainly a feature of the 2.6 kernels.
Personally I can't really tell the big difference ;) Cheers, Tink |
if you have the kernel-source and the .config file for your kernel you could load the config back up during your new kernel compile.
( This is an opinion ) Personally, I can't stand it. I've tried it numerous times ( both with patches and official sources) and on my hardware I always took a performance hit. YMMV. |
I notice a huge difference with the pre emptibel kernel. My desktop respondes right away no matter what is going on in the backround and is a lot smother overall. I only have a pentium 2 so maybe this is why I notice should a big difference.
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preemption is one of the 2 main patches from 2.4 that decrease lag time. As i recall from a study, the preemption patch was not as good as low-latency patch at the start, but after the system got going, the low-latency patch got worse and worse, it apparently had a little problem with keeping the latency time down, the preemption patch however, was best at keeping the latency down for long periods of time.
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About running it on old hardware, what you say is interesting! Has anyone tried running it on better hardware? /Harish |
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