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[Xen-devel] Does Xen scheduler preserves 5% of its utilization to every
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] Does Xen scheduler preserves 5% of its utilization to every VM? |
| From: | walmart <vmwalmart@xxxxxxxxx> |
| Date: | Tue, 14 Sep 2010 01:16:09 -0500 |
| Delivery-date: | Mon, 13 Sep 2010 23:17:41 -0700 |
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Hi, all I was trying to write a Xen scheduler, it is a fixed priority one and would give domain 1 higher priority than domain 2. (which means whenever domain 1 is runnable, it got the cpu to run). I got two domains running. It is on Fedora 13, 64 bit, Xen 4.0.1. domain 1 and doman 2 both only have one vcpu, and are pinned to the same core. The strange thing is: domain 1 is busy, domain 2 is idle, domain 1 got 95% of the cpu; domain 1 is idle, domain 2 is busy, domain 2 got 95% of the cpu; domain 1 is busy, domain 2 is busy, domain 1 got 95% of the cpu, while domain 2 got the remaining 5%. I checked the schedule() function again and again, still couldn't figure out why would this happen. Could anyone give me some hint? thanks very much! Best! Sam _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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