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
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