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[Xen-devel] How expensive is a VM EXIT?
| Subject: | [Xen-devel] How expensive is a VM EXIT? |
|---|---|
| From: | Emre Can Sezer <ecsezer@xxxxxxxx> |
| Date: | Tue, 03 Mar 2009 10:35:15 -0500 |
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Hi,I've been trying to get a ballpark number on how expensive a VM EXIT is in terms of clock cycles. I'm also interested in how slow a TLB miss is. The only reference I was able to find was 13000 cycles for VM EXIT and around several hundred cycles for a TLB miss and a complete walk of page tables. Does anyone know from the top of their head or is there a reference you can share? Thanks in advance. John _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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