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Date: Tue, 28 Mar 2017 18:17:32 +0100 From: Radu Rendec <rrendec@...sta.com> To: linux-kernel@...r.kernel.org Subject: Impact of CONFIG_PARAVIRT=y / mmap benchmark Hi, I'm trying to assess the performance impact of enabling PARAVIRT (and XEN) in a custom kernel configuration. I came across a very old thread (https://lkml.org/lkml/2009/5/13/449) on this topic and the conclusion back then was that the performance impact was (arguably) around 1%. Does anyone still have a copy of Ingo Molnar's mmap-perf.c program (the old link is broken)? Would it still be relevant to use it for measuring performance in case of PARAVIRT? Last but not least, has anyone looked into PARAVIRT performance more recently? Thank you! Best regards, Radu Rendec
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