linux-kernel - Re: Re: HT (Hyper Threading) aware process scheduling doesn't work as it should

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Message-ID: <CADVo6625Jg9zY2hejFXD_2TrbZKHm3seNGobaQg2RKta7Nor_Q@mail.gmail.com>
Date:	Mon, 31 Oct 2011 22:15:00 -0700
From:	ffab ffa <ffab78@...il.com>
To:	"Artem S. Tashkinov" <t.artem@...os.com>
Cc:	hmh@....eng.br, linux-kernel@...r.kernel.org
Subject: Re: Re: HT (Hyper Threading) aware process scheduling doesn't work as
 it should

are you sure of the cpu terminology? I used few  i7-2600K  machine
and  the  /proc/cpuinfo shows that the cores thread siblings are 0-4,
1-5, 2-6 and 3-7
can you share your /proc/cpuinfo

On Mon, Oct 31, 2011 at 2:40 AM, Artem S. Tashkinov <t.artem@...os.com> wrote:
>> On Oct 31, 2011, Henrique de Moraes Holschuh  wrote:
>>
>> On Sun, 30 Oct 2011, Artem S. Tashkinov wrote:
>> > > Please make sure both are set to 0.  If they were not 0 at the time you
>> > > ran your tests, please retest and report back.
>> >
>> > That's 0 & 0 for me.
>>
>> How idle is your system during the test?
>
> load average: 0.00, 0.00, 0.00
>
> As I've mentioned great many times I run this test on a completely idle system
> (i.e. I even `init 3` in advance to avoid any unexpected CPU usage spikes
> caused by unrelated processed).
>
> I have to insist that people conduct this test on their own without trusting my
> words. Probably there's something I overlook or don't fully understand but from
> what I see, there's a serious issue here (at least Microsoft XP and 7 work exactly
> the way I believe an OS should handle such a load).
>
> Artem
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