Re: [PATCH v4 09/10] sched/fair: disable stealing if too many NUMA nodes

2018-12-07 Thread Steven Sistare
On 12/7/2018 6:43 AM, Valentin Schneider wrote: > Hi Steve, > > On 06/12/2018 21:28, Steve Sistare wrote: > [...] > > FYI git gets lost when it comes to applying this one on tip/sched/core > (v4.20-rc5 based), but first applying it on rc1 then rebasing the stack > on rc5 works fine. > > [...]

Re: [PATCH v4 09/10] sched/fair: disable stealing if too many NUMA nodes

2018-12-07 Thread Valentin Schneider
Hi Steve, On 06/12/2018 21:28, Steve Sistare wrote: [...] FYI git gets lost when it comes to applying this one on tip/sched/core (v4.20-rc5 based), but first applying it on rc1 then rebasing the stack on rc5 works fine. [...]

[PATCH v4 09/10] sched/fair: disable stealing if too many NUMA nodes

2018-12-06 Thread Steve Sistare
The STEAL feature causes regressions on hackbench on larger NUMA systems, so disable it on systems with more than sched_steal_node_limit nodes (default 2). Note that the feature remains enabled as seen in features.h and /sys/kernel/debug/sched_features, but stealing is only performed if nodes <= s