From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Xu Subject: performance of credit2 on hybrid workload Date: Mon, 23 May 2011 04:15:50 -0400 Message-ID: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0775826988==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel Cc: george.dunlap@eu.citrix.com List-Id: xen-devel@lists.xenproject.org --===============0775826988== Content-Type: multipart/alternative; boundary=20cf303ea3c250f2de04a3ed144e --20cf303ea3c250f2de04a3ed144e Content-Type: text/plain; charset=ISO-8859-1 Hi, Xen4.1 datasheet tells that credit2 scheduler is designed for latency sensitive workloads. Does it have some improvement on the hybrid workload including both the cpu-bound and latency-sensitive i/o work? For example, if a VM runs a cpu-bound task burning the cpu and a i/o-bound (latency-sensitive) task simultaneously, will the latency be guaranteed? And how? Regards, Cong --20cf303ea3c250f2de04a3ed144e Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi,

Xen4.1 datasheet tells that credit2 scheduler=A0is d= esigned for latency sensitive workloads. Does it have some improvement on t= he hybrid workload including both the cpu-bound and latency-sensitive i/o w= ork? For example, if a VM runs a cpu-bound task burning the cpu and a i/o-b= ound (latency-sensitive) task simultaneously, will the latency be guarantee= d? And how?

Regards,
Cong
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