Re: [ANNOUNCE] 4.4-rc6-rt1

From: Mike Galbraith
Date: Thu Jan 14 2016 - 11:05:19 EST


On Thu, 2016-01-14 at 16:07 +0100, Thomas Gleixner wrote:

> > I didn't have CONFIG_NO_HZ_FULL enabled, it was CONFIG_NO_HZ_IDLE.
>
> So with the above fix it still behaves badly. Can you provide your config and
> a hint which workload/idle/whatever state results in bad behaviour.

This is virgin -rt1 modulo fixlet applied to v4.4.0, built with the
.config from v4.4.0 that built it (modulo RT_FULL) rebuilding itself
via make -j8.

homer:/root # vmstat 10
procs -----------memory---------- ---swap-- -----io---- -system-- ------cpu-----
r b swpd free buff cache si so bi bo in cs us sy id wa st
0 1 0 14742988 179832 680792 0 0 634 25 326 1196 2 1 89 8 0
8 0 0 14476084 179848 701632 0 0 814 525 2421 12314 11 1 87 1 0
8 0 0 14483232 179864 712656 0 0 165 1628 2404 12320 11 1 87 1 0
8 0 0 14493336 180008 727836 0 0 141 762 2328 11306 11 1 87 0 0
8 0 0 14456436 180024 738356 0 0 159 1478 2336 11939 11 1 87 0 0

Way too idle, taking forever.

-Mike

Attachment: config.gz
Description: application/gzip