ron minnich wrote: > On 8/2/07, Avi Kivity <[EMAIL PROTECTED]> wrote: > >> Li, Xin B wrote: >> >>>> Did you see any performance improvements out of this? >>>> >>>> >>> Acturally we don't expect any obviously performance because MSR accesses >>> are not frequent. >>> >>> >> Well, why do this then? >> > > ah, see, you asked the question I was going to ask. OK, this can be > faster; but, are you sure you really care? > >
Looking at the Linux context switch code, it can bang on MSR_FS_BASE and MSR_KERNEL_GS_BASE. A high context switch rate between threads (which use %gs or %fs) can show an improvement with this. Things like kbuild probably won't as they use single threaded processes. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
