Messages in this thread |  | | Date | Fri, 29 Nov 2024 11:02:36 +0100 | | From | Michal Koutný <> | | Subject | Re: [PATCH V7 9/9] sched/rt: Remove default bandwidth control |
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On Wed, Nov 27, 2024 at 04:35:39PM GMT, Juri Lelli <juri.lelli@redhat.com> wrote: > > The default DL bandwidth is thus is 95%. The fair server is given 5%. > > Is that 5% of those 95%? > > Yes, it is indeed.
Thanks for navigating me. I have followup questions about /proc/sys/kernel/sched_rt_runtime_us / /proc/sys/kernel/sched_rt_period_us (a ratio, without CONGIG_RT_GROUP_SCHED)
- 0 - disables DL, (not RT, so they can monopolize a CPU) - 1 - DL tasks can monopolize CPU, SCHED_NORMAL have 5% thanks to fair_server - 1-Δ - SCHED_NORMAL tasks have - (1-Δ)*5% on behalf of DL (above RT) - Δ regularly (below RT)
Is this breakdown correct? I'm wondering if different values of Δ mean anything or how they can be used.
Regards, Michal [unhandled content-type:application/pgp-signature] |  |