lkml.org 
[lkml]   [2019]   [Jul]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 3/5] sched/fair: rework load_balance
From
Date
On 26/07/2019 15:47, Vincent Guittot wrote:
[...]
>> If CPU0 runs the load balancer, balancing utilization would mean pulling
>> 2 tasks from CPU1 to reach the domain-average of 40%. The good side of this
>> is that we could save ourselves from running some newidle balances, but
>> I'll admit that's all quite "finger in the air".
>
> Don't forget that scheduler also selects a cpu when task wakeup and
> should cope with such situation
>

Right, although I'm not sure even the slow wakeup path is any good at
balancing utilization.

>>
>>>> happen, but it'd be a shame to repeatedly do this when we could
>>>> preemptively balance utilization.
>>>>

\
 
 \ /
  Last update: 2019-07-29 16:28    [W:0.051 / U:0.960 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site