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From: | Rik van Riel |
Subject: | [Qemu-devel] Re: [PATCH] qemu-kvm: response to SIGUSR1 to start/stop a VCPU (v2) |
Date: | Wed, 01 Dec 2010 14:42:56 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100806 Fedora/3.1.2-1.fc13 Lightning/1.0b2pre Thunderbird/3.1.2 |
On 12/01/2010 02:35 PM, Peter Zijlstra wrote:
On Wed, 2010-12-01 at 14:24 -0500, Rik van Riel wrote:
Even if we equalized the amount of CPU time each VCPU ends up getting across some time interval, that is no guarantee they get useful work done, or that the time gets fairly divided to _user processes_ running inside the guest.Right, and Jeremy was working on making the guest load-balancer aware of that so the user-space should get fairly scheduled on service (of course, that's assuming you run a linux guest with that logic in).
At that point, you might not need the host side balancing any more, since the guest can move around processes internally (if needed). -- All rights reversed
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