From: Mike Galbraith <efault@gmx.de>
To: Wanpeng Li <kernellwp@gmail.com>
Cc: linux-kernel@vger.kernel.org, kvm <kvm@vger.kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Radim Krcmar <rkrcmar@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>
Subject: Re: unixbench context switch perfomance & cpu topology
Date: Tue, 23 Jan 2018 14:49:18 +0100 [thread overview]
Message-ID: <1516715358.8747.27.camel@gmx.de> (raw)
In-Reply-To: <CANRm+CxpP-MNLsJS+-bu19Avp96=8jXrc4et1HE+-7SbKgGbPQ@mail.gmail.com>
On Tue, 2018-01-23 at 18:36 +0800, Wanpeng Li wrote:
>
> Thanks for having a try, Mike. :) Actually the two context1 tasks
> don't stack up on one logical cpu at the most of time which is
> observed by kernelshark. Do you have any idea why there is 4.5 times
> RESCHED IPIs which is mentioned in another reply for this thread?
See resched_curr().
-Mike
next prev parent reply other threads:[~2018-01-23 13:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-22 11:47 unixbench context switch perfomance & cpu topology Wanpeng Li
2018-01-22 12:08 ` Mike Galbraith
2018-01-22 12:27 ` Wanpeng Li
2018-01-22 13:37 ` Mike Galbraith
2018-01-23 10:36 ` Wanpeng Li
2018-01-23 13:49 ` Mike Galbraith [this message]
2018-01-24 8:07 ` Wanpeng Li
2018-01-22 12:53 ` Peter Zijlstra
2018-01-23 10:33 ` Wanpeng Li
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1516715358.8747.27.camel@gmx.de \
--to=efault@gmx.de \
--cc=fweisbec@gmail.com \
--cc=kernellwp@gmail.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=pbonzini@redhat.com \
--cc=peterz@infradead.org \
--cc=rkrcmar@redhat.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).