From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jia Rao Subject: About the credit2 scheduler Date: Tue, 16 Feb 2010 14:23:39 -0500 Message-ID: <994429491002161123u4282ftb407f1d700fac36b@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0966957198==" 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@lists.xensource.com List-Id: xen-devel@lists.xenproject.org --===============0966957198== Content-Type: multipart/alternative; boundary=000325557522ca5154047fbcab69 --000325557522ca5154047fbcab69 Content-Type: text/plain; charset=ISO-8859-1 Hi All, I am curious that how is the credit scheduler compared to the linux default CPU scheduler ? They look quite similar. Do the problems in the credit scheduler also exist in Linux CPU scheduler? What I understand is that, virtual machine monitors have a higher requirement in "fair sharing" than Linux. Therefore, we need credit-based scheduling which can possibly cause problems for latency sensitive workloads. Thanks --000325557522ca5154047fbcab69 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi All,

I am curious that how is the credit scheduler co= mpared to the linux default CPU scheduler ?
They look quite simil= ar. Do the problems in the credit scheduler also exist in Linux CPU schedul= er?

What I understand is that, virtual machine monitors hav= e a higher requirement in "fair sharing" than Linux. Therefore, w= e need credit-based scheduling which can possibly cause problems for latenc= y sensitive workloads.

Thanks=A0
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