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[Xen-users] dom0 using only a single CPU (networking)
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| Subject: | [Xen-users] dom0 using only a single CPU (networking) |
| From: | fabi.a169@xxxxxxxxx |
| Date: | Fri, 19 Dec 2008 22:31:54 +0100 |
| Delivery-date: | Fri, 19 Dec 2008 13:32:56 -0800 |
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Hello, I'm using a server with 10Gbps network interfaces and 4 CPUs, running several domUs. The problem is that in this setup, with high network load, dom0 turns out to be the bottleneck, using only a single CPU which is saturated and 100%. So the network speed is bounded to much less than 10Gbps. How could I make dom0 use more CPUs in parallel ? I checked my VCPU setup; i have 4 VCPUs running assigned to dom0. For other kinds of programms running in dom0 user space, they are used. Could the problem be that the dom0 kernel uses a single thread for all the network forwarding and so can use only one CPU at a time ? If you have any idea, thank you for sharing your experience. Regards Fabi _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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