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Re: [Xen-devel] [PATCH] Disable Xen PowerNow! support on Opteron 2nd gen
| To: | "Langsdorf, Mark" <mark.langsdorf@xxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Disable Xen PowerNow! support on Opteron 2nd gen and earlier processors |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Wed, 23 Jan 2008 15:41:00 +0000 |
| Delivery-date: | Wed, 23 Jan 2008 07:41:51 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH] Disable Xen PowerNow! support on Opteron 2nd gen and earlier processors |
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On 23/1/08 15:31, "Langsdorf, Mark" <mark.langsdorf@xxxxxxx> wrote: >> Seeing them at that frequency (less than one a minute) is not >> too serious. >> Perhaps we should get rid of the message, or reduce its priority. > > Red Hat engineering is requesting the disable because they've > gotten STREAM results with the test finishing before it started. > > For myself, I don't mind the frequency of the messages. In the > real world, it's serious, especially on financial servers. Firstly, Red Hat can apply this patch to their own tree, regardless of whether or not it's in 2.6.18-xen.hg. Secondly, the cpufreq stuff only kicks in if you put cpufreq=dom0-kernel on the Xen command line. Perhaps they shouldn't do that? They could even omit it dynamically at install time, based on install-hardware configuration. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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