On Tue, Apr 23, 2013 at 08:52:16AM +0300, Gleb Natapov wrote: > On Mon, Apr 22, 2013 at 04:58:01PM +0000, Joji Mekkattuparamban (joji) wrote: > > Greetings, > > > > I have a SMP guest application, running on the 2.6.27 Linux kernel. The > > application, originally written for bare metal, makes extensive use of the > > TSC, by directly invoking rdtsc from the user space for timestamp purposes. > > While running on KVM (RHEL version 6.3), we are running into TSC issues on > > some hardware. As a solution, I am considering migrating to the pvclock. I > > am wondering if there is an example for migrating from TSC to the pvclock. > > Any pointers? > > > Wrong list, you should ask KVM (copied). Recent kernels have pvclock > vdso support which means that gettimeofday() uses it without entering > the kernel. Marcelo? > > -- > Gleb.
Converting application to make use of gettimeofday() should be the best way to make use of pvclock, yes.
