Messages in this thread | | | Date | Thu, 06 Oct 2011 11:09:20 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [Xen-devel] [PATCH 00/10] [PATCH RFC V2] Paravirtualized ticketlocks |
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On 10/06/2011 10:40 AM, Jeremy Fitzhardinge wrote: > However, it looks like locked xadd is also has better performance: on > my Sandybridge laptop (2 cores, 4 threads), the add+mfence is 20% slower > than locked xadd, so that pretty much settles it unless you think > there'd be a dramatic difference on an AMD system.
Konrad measures add+mfence is about 65% slower on AMD Phenom as well.
J
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