linux-kernel - Re: [SCHEDULER] Performance drop in 4.19 compared to 4.18 kernel

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Message-ID: <47e91887-089b-ba71-5f13-5acca0c8c5ad@jonmasters.org>
Date:   Thu, 4 Oct 2018 09:08:36 -0400
From:   Jon Masters <jcm@...masters.org>
To:     Jirka Hladky <jhladky@...hat.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Cc:     Mel Gorman <mgorman@...hsingularity.net>,
        Jakub Raček <jracek@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "kkolakow@...hat.com" <kkolakow@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [SCHEDULER] Performance drop in 4.19 compared to 4.18 kernel

On 9/7/18 5:34 AM, Jirka Hladky wrote:

> We would also be more than happy to test the new patches for the
> performance - please let us know if you are interested.  We have a
> pool of 1 NUMA up to 8 NUMA boxes for that, both AMD and Intel,
> covering different CPU generations from Sandy Bridge till Skylake.

I've followed up internally on ensuring Arm is added to your mix. Can
get you suitable 1 and 2P systems for internal use.

Jon.