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Date: Wed, 21 Feb 2024 22:57:54 +0530 From: Raghavendra K T <raghavendra.kt@....com> To: Thomas Gleixner <tglx@...utronix.de>, Ankur Arora <ankur.a.arora@...cle.com>, linux-kernel@...r.kernel.org Cc: peterz@...radead.org, torvalds@...ux-foundation.org, paulmck@...nel.org, akpm@...ux-foundation.org, luto@...nel.org, bp@...en8.de, dave.hansen@...ux.intel.com, hpa@...or.com, mingo@...hat.com, juri.lelli@...hat.com, vincent.guittot@...aro.org, willy@...radead.org, mgorman@...e.de, jpoimboe@...nel.org, mark.rutland@....com, jgross@...e.com, andrew.cooper3@...rix.com, bristot@...nel.org, mathieu.desnoyers@...icios.com, geert@...ux-m68k.org, glaubitz@...sik.fu-berlin.de, anton.ivanov@...bridgegreys.com, mattst88@...il.com, krypton@...ich-teichert.org, rostedt@...dmis.org, David.Laight@...LAB.COM, richard@....at, mjguzik@...il.com, jon.grimm@....com, bharata@....com, boris.ostrovsky@...cle.com, konrad.wilk@...cle.com Subject: Re: [PATCH 00/30] PREEMPT_AUTO: support lazy rescheduling On 2/21/2024 10:45 PM, Thomas Gleixner wrote: > On Wed, Feb 21 2024 at 17:53, Raghavendra K T wrote: >> Configuration tested. >> a) Base kernel (6.7), > > Which scheduling model is the baseline using? > baseline is also PREEMPT_DYNAMIC with voluntary preemption >> b) patched with PREEMPT_AUTO voluntary preemption. >> c) patched with PREEMPT_DYNAMIC voluntary preemption. >> >> Workloads I tested and their %gain, >> case b case c >> NAS +2.7 +1.9 >> Hashjoin, +0 +0 >> XSBench +1.7 +0 >> Graph500, -6 +0 > > The Graph500 stands out. Needs some analysis. > Sure. Will do more detailed analysis and comeback on this. Thanks - Raghu
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