linux-kernel - Re: Performance Regression in Linux Kernel 5.19

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Message-ID: <PH0PR05MB84483065597B17B361CBA9ABAF479@PH0PR05MB8448.namprd05.prod.outlook.com>
Date:   Tue, 13 Sep 2022 08:40:49 +0000
From:   Manikandan Jagatheesan <mjagatheesan@...are.com>
To:     Borislav Petkov <bp@...en8.de>
CC:     "peterz@...radead.org" <peterz@...radead.org>,
        "jpoimboe@...nel.org" <jpoimboe@...nel.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
        "x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "srivatsa@...il.mit.edu" <srivatsa@...il.mit.edu>,
        Peter Jonasson <pjonasson@...are.com>,
        Yiu Cho Lau <lauyiuch@...are.com>,
        Rajender M <manir@...are.com>,
        Abdul Anshad Azeez <aazees@...are.com>,
        Kodeswaran Kumarasamy <kkumarasamy@...are.com>,
        Rahul Gopakumar <gopakumarr@...are.com>
Subject: Re: Performance Regression in Linux Kernel 5.19

Thank you for the responses,

The underlying host CPU architecture is Skylake, and we are using
default settings at both Hypervisor and Guest (kernel) level.

Are there are any ongoing activities to optimize the performance?

We would be happy to validate the patch (if any) from a performance 
point of view and share the results.

Regards,
Manikandan