Messages in this thread | | | Date | Fri, 19 Apr 2019 10:40:27 +0200 | From | Ingo Molnar <> | Subject | Re: [RFC][PATCH 13/16] sched: Add core wide task selection and scheduling. |
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* Subhra Mazumdar <subhra.mazumdar@oracle.com> wrote:
> I see similar improvement with this patch as removing the condition I > earlier mentioned. So that's not needed. I also included the patch for the > priority fix. For 2 DB instances, HT disabling stands at -22% for 32 users > (from earlier emails). > > > 1 DB instance > > users baseline %idle core_sched %idle > 16 1 84 -4.9% 84 > 24 1 76 -6.7% 75 > 32 1 69 -2.4% 69 > > 2 DB instance > > users baseline %idle core_sched %idle > 16 1 66 -19.5% 69 > 24 1 54 -9.8% 57 > 32 1 42 -27.2% 48
So HT disabling slows down the 2DB instance by -22%, while core-sched slows it down by -27.2%?
Would it be possible to see all the results in two larger tables (1 DB instance and 2 DB instance) so that we can compare the performance of the 3 kernel variants with each other:
- "vanilla +HT": Hyperthreading enabled, vanilla scheduler - "vanilla -HT": Hyperthreading disabled, vanilla scheduler - "core_sched": Hyperthreading enabled, core-scheduling enabled
?
Thanks,
Ingo
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