On Sat, 28 Mar 2009 17:05:28 +1030 Rusty Russell <rusty@xxxxxxxxxxxxxxx> wrote: > On Saturday 28 March 2009 01:39:05 Martin Schwidefsky wrote: > > Greetings, > > the circus is back in town -- another version of the guest page hinting > > patches. The patches differ from version 6 only in the kernel version, > > they apply against 2.6.29. My short sniff test showed that the code > > is still working as expected. > > > > To recap (you can skip this if you read the boiler plate of the last > > version of the patches): > > The main benefit for guest page hinting vs. the ballooner is that there > > is no need for a monitor that keeps track of the memory usage of all the > > guests, a complex algorithm that calculates the working set sizes and for > > the calls into the guest kernel to control the size of the balloons. > > I thought you weren't convinced of the concrete benefits over ballooning, > or am I misremembering? The performance test I have seen so far show that the benefits of ballooning vs. guest page hinting are about the same. I am still convinced that the guest page hinting is the way to go because you do not need an external monitor. Calculating the working set size for a guest is a challenge. With guest page hinting there is no need for a working set size calculation. -- blue skies, Martin. "Reality continues to ruin my life." - Calvin. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
