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From: Thomas Gleixner <tglx@linutronix.de>
To: Raghavendra K T <raghavendra.kt@amd.com>, Ankur Arora
 <ankur.a.arora@oracle.com>, linux-kernel@vger.kernel.org
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Subject: Re: [PATCH 00/30] PREEMPT_AUTO: support lazy rescheduling
In-Reply-To: <15fcf98c-58c5-fa08-2e21-f3b0baf058e6@amd.com>
References: <20240213055554.1802415-1-ankur.a.arora@oracle.com>
 <15fcf98c-58c5-fa08-2e21-f3b0baf058e6@amd.com>
Date: Wed, 21 Feb 2024 18:15:34 +0100
Message-ID: <87zfvtg2mh.ffs@tglx>
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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?

> 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.

Thanks,

        tglx