linux-kernel - Re: [PATCH RFC V9 0/19] Paravirtualized ticket spinlocks

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Date:	Sun, 02 Jun 2013 09:20:34 -0700
From:	Jiannan Ouyang <ouyang@...pitt.edu>
To:	Gleb Natapov <gleb@...hat.com>
Cc:	Raghavendra K T <raghavendra.kt@...ux.vnet.ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>, x86@...nel.org,
	konrad.wilk@...cle.com, "H. Peter Anvin" <hpa@...or.com>,
	pbonzini@...hat.com, linux-doc@...r.kernel.org,
	"Andrew M. Theurer" <habanero@...ux.vnet.ibm.com>,
	xen-devel@...ts.xensource.com,
	Peter Zijlstra <peterz@...radead.org>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	stefano.stabellini@...citrix.com, andi@...stfloor.org,
	attilio.rao@...rix.com, Jiannan Ouyang <ouyang@...pitt.edu>,
	gregkh@...e.de, agraf@...e.de, chegu vinod <chegu_vinod@...com>,
	torvalds@...ux-foundation.org, Avi Kivity <avi.kivity@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	KVM <kvm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
	stephan.diestelhorst@....com, Rik van Riel <riel@...hat.com>,
	Andrew Jones <drjones@...hat.com>,
	virtualization@...ts.linux-foundation.org,
	Srivatsa Vaddagiri <srivatsa.vaddagiri@...il.com>
Subject: Re: [PATCH RFC V9 0/19] Paravirtualized ticket spinlocks

On Sun, Jun 2, 2013 at 1:07 AM, Gleb Natapov <gleb@...hat.com> wrote:

> High level question here. We have a big hope for "Preemptable Ticket
> Spinlock" patch series by Jiannan Ouyang to solve most, if not all,
> ticketing spinlocks in overcommit scenarios problem without need for PV.
> So how this patch series compares with his patches on PLE enabled processors?
>

No experiment results yet.

An error is reported on a 20 core VM. I'm during an internship
relocation, and will start work on it next week.

--
Jiannan
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