Re: [PATCH] sched/fair: add support to tune PELT ramp/decay timings

2018-04-12 Thread Peter Zijlstra
On Mon, Apr 09, 2018 at 05:51:34PM +0100, Patrick Bellasi wrote: > The PELT half-life is the time [ms] required by the PELT signal to build > up a 50% load/utilization, starting from zero. This time is currently > hardcoded to be 32ms, a value which seems to make sense for most of the > workloads.

[PATCH] sched/fair: add support to tune PELT ramp/decay timings

2018-04-09 Thread Patrick Bellasi
The PELT half-life is the time [ms] required by the PELT signal to build up a 50% load/utilization, starting from zero. This time is currently hardcoded to be 32ms, a value which seems to make sense for most of the workloads. However, 32ms has been verified to be too long for certain classes of wo