Anthony Liguori wrote: > I think this is a really nice and important patch set. Just a couple > things: > > On Sun, 2007-08-19 at 00:02 +0200, Luca Tettamanti wrote: > > >>> In this case the dyn-tick minimum res will be 1msec. I believe it should >>> work ok since this is the case without any dyn-tick. >>> >> Actually minimum resolution depends on host HZ setting, but - yes - >> essentially you have the same behaviour of the "unix" timer, plus the >> overhead of reprogramming the timer. >> > > Is this significant? At a high guest HZ, this is could be quite a lot > of additional syscalls right? > >
At HZ=1000, this adds a small multiple of 1000 syscalls, which is a fairly small overhead. At HZ>1000 (only possible with a dyntick guest), the current implementation doesn't cope at all, so we can't compare overhead. -- 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
