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Re: [Xen-devel] credit vs sedf scheduler

from [Emmanuel Ackaouy] [Permanent Link][Original]
To: Liang Yang <multisyncfe991@xxxxxxxxxxx>
Subject: Re: [Xen-devel] credit vs sedf scheduler
From: Emmanuel Ackaouy <ack@xxxxxxxxxxxxx>
Date: Thu, 16 Nov 2006 16:37:19 +0000
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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On Thu, Nov 16, 2006 at 09:29:30AM -0700, Liang Yang wrote:
>    Hi,
>    
>    Can I used vcpu-pin to avoid CPU scheduler overhead? Suppose I have four
>    CPUs, if I used xm vcpu-pin to fix the mapping of each physcial CPU to
>    virtual CPU. So credit scheduler will not be needed.
>    
>    Liang

Pinning all your VCPUs will not stop Xen from executing various
scheduler code paths.

Why are you worried about the scheduler overhead? It should be
negligeable.

Emmanuel.

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