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Re: [Xen-devel] early_cpu_init() and identify_cpu()
| To: | Jan Beulich <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] early_cpu_init() and identify_cpu() |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Tue, 17 Jul 2007 08:50:08 +0100 |
| Delivery-date: | Tue, 17 Jul 2007 00:48:05 -0700 |
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| Thread-index: | AcfIRxhXVvBGJjQ6EdykoQAX8io7RQ== |
| Thread-topic: | [Xen-devel] early_cpu_init() and identify_cpu() |
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On 16/7/07 09:18, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote: >> How much faster is scrolling of WC framebuffer on your test system? > > That's a win of about 30%, and using movsq in memcpy() is another win of > about 50%. Will probably create a vidmemmove()... That still totally sucks then. Paging a full screen of text of, say 60 lines, done line-by-line will still take, say 60*300ms == 20 seconds(ish). Implement this as a command-line option only if you must have it. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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