On Wednesday 04 April 2007 11:25:57 Jeremy Fitzhardinge wrote: > Andi Kleen wrote: > > What do the benchmarks say with CONFIG_PARAVIRT on native hardware > > compared to !CONFIG_PARAVIRT. e.g. does lmbench suffer? > > Barely. There's a slight hit for not using patching, and patching is > almost identical to native performance. The most noticeable difference > is in the null syscall microbenchmark, but once you get to complex > things the difference is in the noise.
Why is there a difference for null syscall? I had assumed we patched all the fast path cases relevant there. Do you have an idea where it comes from? -Andi _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
