From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <Ian.Campbell@citrix.com>
Subject: Re: [Xen-devel] [PATCH RFC V6 0/11] Paravirtualized ticketlocks
Date: Mon, 2 Apr 2012 10:42:53 +0100
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To: Thomas Gleixner <tglx@linutronix.de>
Cc: the arch/x86 maintainers <x86@kernel.org>, KVM <kvm@vger.kernel.org>, Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>, Peter Zijlstra <peterz@infradead.org>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, LKML <linux-kernel@vger.kernel.org>, Andi Kleen <andi@firstfloor.org>, Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>, Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>, Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>, "H. Peter Anvin" <hpa@zytor.com>, Attilio Rao <attilio.rao@citrix.com>, Ingo Molnar <mingo@elte.hu>, Virtualization <virtualization@lists.linux-foundation.org>, Linus Torvalds <torvalds@linux-foundation.org>, Xen Devel <xen-devel@lists.xensource.com>, Stephan Diestelhorst <stephan.diestelhorst@amd.com>, Avi Kivity <avi@redhat.com>
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On Fri, 2012-03-30 at 23:07 +0100, Thomas Gleixner wrote:
> So if we need to fiddle with the scheduler and frankly that's the only
> way to get a real gain (the numbers, which are achieved by this
> patches, are not that impressive) then the question arises whether we
> should turn the whole thing around.

It probably doesn't materially effect your core point (which seems valid
to me) but it's worth pointing out that the numbers presented in this
thread are AFAICT mostly focused on ensuring that that the impact of
this infrastructure is acceptable on native rather than showing the
benefits for virtualized workloads.

Ian.