lkml.org 
[lkml]   [2020]   [Jan]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [Patch v9 7/8] sched/fair: Enable tuning of decay period
From
Date
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

\
 
 \ /
  Last update: 2020-01-29 00:57    [W:0.164 / U:0.592 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site