linux-kernel - Re: [PATCH v4] sched/fair: Introduce SIS_UTIL to search idle CPU based on sum of util

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220624122753.GA6149@chenyu5-mobl1.lan>
Date:   Fri, 24 Jun 2022 20:27:53 +0800
From:   Chen Yu <yu.c.chen@...el.com>
To:     K Prateek Nayak <kprateek.nayak@....com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Mel Gorman <mgorman@...e.de>, Ingo Molnar <mingo@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Barry Song <21cnbao@...il.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
        Len Brown <len.brown@...el.com>,
        Ben Segall <bsegall@...gle.com>,
        Aubrey Li <aubrey.li@...el.com>,
        Abel Wu <wuyun.abel@...edance.com>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Tim Chen <tim.c.chen@...el.com>, linux-kernel@...r.kernel.org,
        Yicong Yang <yangyicong@...ilicon.com>,
        Mohini Narkhede <mohini.narkhede@...el.com>
Subject: Re: [PATCH v4] sched/fair: Introduce SIS_UTIL to search idle CPU
 based on sum of util_avg

On Fri, Jun 24, 2022 at 09:34:49AM +0530, K Prateek Nayak wrote:
> Hello Chenyu,
> 
> On 6/24/2022 7:37 AM, Chen Yu wrote:
> 
> >
> > [..snip..]>
> >> With v4 on the current tip, I don't see any need for
> >> a special case for systems with smaller LLCs with
> >> SIS_PROP disabled and SIS_UITL enable. Even SIS Efficiency
> >> seems to be better with SIS_UTIL for hackbench.
> >>
> >> Tested-by: K Prateek Nayak <kprateek.nayak@....com>
> > Thanks again. Would you mind if I add this test report link into next patch
> > version?
> 
> Sure.
> I'm assuming the next version will disables SIS_PROP and only
> keep SIS_UTIL enabled which is the same configuration we ran
> during this round of testing. The results should stay the same :)
> --
Yes Peter has helped me change the default value of SIS_PROP and with
the current link in commit log, I assume we can find your data via it.

thanks,
Chenyu
> Thanks and Regards,
> Prateek