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Re: [Xen-devel] [PATCH RFC v6 10/11] pvqspinlock, x86: Enable qspinlock PV support for KVM
- To: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- From: Waiman Long <waiman.long@xxxxxx>
- Date: Thu, 13 Mar 2014 16:09:03 -0400
- Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Raghavendra K T <raghavendra.kt@xxxxxxxxxxxxxxxxxx>, kvm@xxxxxxxxxxxxxxx, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, Andi Kleen <andi@xxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Michel Lespinasse <walken@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, linux-arch@xxxxxxxxxxxxxxx, Gleb Natapov <gleb@xxxxxxxxxx>, x86@xxxxxxxxxx, Ingo Molnar <mingo@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, "Paul E. McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Scott J Norton <scott.norton@xxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Chris Wright <chrisw@xxxxxxxxxxxx>, Oleg Nesterov <oleg@xxxxxxxxxx>, Alok Kataria <akataria@xxxxxxxxxx>, Aswin Chandramouleeswaran <aswin@xxxxxx>, Chegu Vinod <chegu_vinod@xxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, David Vrabel <david.vrabel@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 13 Mar 2014 20:09:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 03/13/2014 11:25 AM, Peter Zijlstra wrote:
On Wed, Mar 12, 2014 at 02:54:57PM -0400, Waiman Long wrote:
A KVM guest of 20 CPU cores was created to run the disk workload of
the AIM7 benchmark on both ext4 and xfs RAM disks at 3000 users on a
3.14-rc6 based kernel. The JPM (jobs/minute) data of the test run were:
You really should just delete that aim7 crap. A benchmark that runs for
hours is _NOT_ usable.
The specific subtest that I used run only 10 seconds or so in my test
box as I used ramdisk for all the filesystem access. If you use a
physical disk, it will be much slower.
-Longman
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