lkml.org 
[lkml]   [2020]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH v2 6/6] sched/fair: Implement starvation monitor
On 07/08/20 15:28, luca abeni wrote:
> Hi Juri,
>
> On Fri, 7 Aug 2020 11:56:04 +0200
> Juri Lelli <juri.lelli@redhat.com> wrote:
>
> > Starting deadline server for lower priority classes right away when
> > first task is enqueued might break guarantees
>
> Which guarantees are you thinking about, here? Response times of fixed
> priority tasks?

Response time, but also wakeup latency (which, for better or worse, is
another important metric).

> If fixed priority tasks are also scheduled through deadline servers,
> then you can provide response-time guarantees to them even when
> lower-priority/non-real-time tasks are scheduled through deadline
> servers.

Right, but I fear we won't be able to keep current behavior for wakeups:
RT with highest prio always gets scheduled right away?

\
 
 \ /
  Last update: 2020-08-07 15:45    [W:0.083 / U:0.332 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site