Messages in this thread |  | | Subject | Re: [Patch v9 7/8] sched/fair: Enable tuning of decay period | From | Randy Dunlap <> | Date | Tue, 28 Jan 2020 15:56:57 -0800 |
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Hi,
On 1/28/20 2:36 PM, Thara Gopinath wrote: > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index e35b28e..be4147b 100644 > --- a/Documentation/admin-guide/kernel-parameters.txt > +++ b/Documentation/admin-guide/kernel-parameters.txt > @@ -4376,6 +4376,11 @@ > incurs a small amount of overhead in the scheduler > but is useful for debugging and performance tuning. > > + sched_thermal_decay_shift= > + [KNL, SMP] Set decay shift for thermal pressure signal. > + Format: integer between 0 and 10 > + Default is 0. > +
That tells an admin [or any reader] almost nothing about this kernel parameter or what it does. And nothing about what unit the value is in. Does the value 0 disable this feature?
> skew_tick= [KNL] Offset the periodic timer tick per cpu to mitigate > xtime_lock contention on larger systems, and/or RCU lock > contention on all systems with CONFIG_MAXSMP set.
thanks. -- ~Randy
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