[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [Patch][resend] implementation of cpupool support in xl
On 09/16/10 07:58, Vasiliy G Tolstov wrote: Sorry for may be breaking thread, but what benefits of using cpu pool in Xen? Can You provide some use cases for using cpu pools? Without cpu pools the whole Xen server is running one scheduler which is scheduling all domains on all cpus (possibly with some restrictions due to cpu pinning). With cpu pools each pool is running it's own scheduler responsible only for some cpus and some domains. This may be important if you want to: - isolate some domains from others regarding cpu usage - restrict a group of domains to a subset of cpus (e.g. due to license restrictions), while scheduling parameters should still be working (this was our main problem without cpu pools: scheduling weights and cpu pinning are not working together very well) - use different scheduling strategies for different domains (e.g. credit scheduler for some domains and credit2 or sedf for others) For an extended discussion on cpu pools please see: http://lists.xensource.com/archives/html/xen-devel/2009-07/msg01116.html HTH Juergen -- Juergen Gross Principal Developer Operating Systems TSP ES&S SWE OS6 Telephone: +49 (0) 89 3222 2967 Fujitsu Technology Solutions e-mail: juergen.gross@xxxxxxxxxxxxxx Domagkstr. 28 Internet: ts.fujitsu.com D-80807 Muenchen Company details: ts.fujitsu.com/imprint.html _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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