Matthew Kent wrote: >> If DYNAMIC_TICKS is defined qemu does not attepmt to generate SIGALRM at a >> constant rate. Rather, the system timer is set to generate SIGALRM only >> when it is needed. DYNAMIC_TICKS reduces the number of SIGALRMs sent to >> idle dynamic-ticked guests. >> Original patch from Dan Kenigsberg <[EMAIL PROTECTED]> >> >> Signed-off-by: Luca Tettamanti <[EMAIL PROTECTED]> >> > > Wow, this patch sure made a difference for some timings I've been doing > with kvm-35 and hackbench. All tests using 2.6.23-rc3+hrtimers patch for > x86_64/i386 tickless and a quad core intel: > > [EMAIL PROTECTED] ~]$ time ./hackbench 50 > x86_64 host : real 0m10.845s > x86_64 host, bound to 1 cpu : real 0m21.884s > i386 guest+unix clock : real 0m49.206s > i386 guest+hpet clock : real 0m48.292s > i386 guest+dynticks clock : real 0m28.835s > > Results are repeatable and verfied with a stopwatch because I didn't > believe them at first :) > > Great stuff. >
I'm not sure what these results mean... -- 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
