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RE: [Xen-devel] another scheduler problem, on x86_64 only?

To: "Stephan Diestelhorst" <sd386@xxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] another scheduler problem, on x86_64 only?
From: "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
Date: Wed, 13 Jul 2005 10:13:20 -0700
Cc: Andrew Theurer <habanero@xxxxxxxxxx>
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Thread-topic: [Xen-devel] another scheduler problem, on x86_64 only?
Stephan Diestelhorst wrote:
> Just for clarification:
>    Andrew: Which scheduler did you use? sedf? or bvt?
>    Jun: did you try the bvt scheduler too?
Yes, I tried to both (either by rebuilding xen or sched=<> boot
parameter), confirming like: 
(XEN) Using scheduler: Borrowed Virtual Time (bvt)

I see the problem no matter which scheduler I choose. I think it should
be a schduling issue on x86_64 xenlinux because the cutoff over CPU
utilization is very obvious; 50% max in the top command, and top is not
confused because benchmarks run slower. 

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