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Subject: Re: unixbench context switch perfomance & cpu topology
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>
Date:   Tue, 23 Jan 2018 14:49:18 +0100
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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