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Linux Kernel 2.6 Preemption

Submitted by r00t
on January 11, 2004 - 5:56pm

When my pc was an athlon xp 1800+ with VIA kt333 chipset and 512mb ram ddr 333 , in linux kernel 2.6.0-test4 with preemption i saw big difference on speed.
Now i've an athlon xp 2600+ ,1gb ram ddr400 mhz (2x512) Nforce2 400 chipset but in linux kernel 2.6.x there is no such difference on speed with preemption or without preemption . what is going on ?

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Not preemption

Con Kolivas
on
January 11, 2004 - 9:11pm

In-kernel preemption itself should make hardly any palpable difference to the feel of a machine, and a lot is placebo effect. You may have been noticing something else coincidentally. In-kernel preemption (the sort you're talking about) changes latency of tasks in a smaller timespace than is noticed by human reaction time.

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