Re: Interesting interaction between lguest and CFS


* Ingo Molnar <mingo@xxxxxxx> wrote:

Matt, could you send me your .config too? Maybe i can reproduce it
with your config.

ok, got it (off-list) and you seem to have the default HZ=250. Could you
change it to HZ=1000 - does the delay get alot smaller?

if yes then this could be roughly the expected worst-case behavior for a
nice+19 'signalling' task - i'd suggest to try the dont-use-renice patch
Rusty sent (with the hang it causes fixed), or to change the nice(19) to
nice(10).

(the rq_clock behavior still looks a bit anomalous, that perhaps
contributes to the problem.)

Ingo
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