On 12/14/10 12:49, Anthony Liguori wrote: > But that doesn't tell you what the impact is in real world workloads. > Before we start pushing all device emulation into the kernel, we need to > quantify how often gettimeofday() is really called in real workloads.
The workload that inspired that example program at its current max load calls gtod upwards of 1000 times per second. The overhead of gettimeofday was the biggest factor when comparing performance to bare metal and esx. That's why I wrote the test program --- boils a complex product/program to a single system call. David > > Regards, > > Anthony Liguori > >> What's the relative speed of the in-kernel pmtimer compared to the PIT? >> >> David >> > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
