By garypen on Jun 09, 2008
It's possible to access performance counters through the xen console and I wonder whether it would be a good idea to have these enabled by default in the shipping xVM product? I've opened an RFE to track this idea and if anyone reading this is a user of xVM, I would be interested in hearing your opinion about this. If the runtime overhead of maintaining the counters is sufficiently low, I'm in favour. I found them to be very useful in diagnosing a problem in 64 bit HVM guest performance and I'm sure there's a lot more information they can tell us that will help improve xVM performance. Take a look at: 6699320 xvm/hypervisor performance slow on HVM guests 6704764 Enable performance counters by default for more details.