On Fri, 2013-10-25 at 10:25 -0500, James Yang wrote: > On Fri, 25 Oct 2013, Scott Wood wrote: > > > Has anyone measured how much this slows things down with a typical > > userspace? > > Not a measurement of the patch in question but an older similar patch > on 3.0.51 (8572 running Debian 5.0.3): > > $ ./test-lwsync > cycles per emulated lwsync = 371 > cycles per sync = 36
My point was more to find out how often a typical userspace executes these instructions. From Wolfgang's e-mail it seems the answer is not very often. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev