Re: [REPORT] cfs-v4 vs sd-0.44

Con Kolivas
2007-04-22T01:53:43Z

On Saturday 21 April 2007 22:12, Willy Tarreau wrote:
> 2) SD-0.44
>
> Feels good, but becomes jerky at moderately high loads. I've started
> 64 ocbench with a 250 ms busy loop and 750 ms sleep time. The system
> always responds correctly but under X, mouse jumps quite a bit and
> typing in xterm or even text console feels slightly jerky. The CPU is
> not completely used, and the load varies a lot (see below). However,
> the load is shared equally between all 64 ocbench, and they do not
> deviate even after 4000 iterations. X uses less than 1% CPU during
> those tests.

Found it. I broke SMP balancing again so there is serious scope for
improvement on SMP hardware. That explains the huge load variations. Expect
yet another fix soon, which should improve behaviour further :)

--
-ck