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Message-ID: <f1a5fe09-f4bc-0dc5-edda-6b3e690bc0e3@amd.com>
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,
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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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