Trying to get some idea of why my performance may be less than expected.
xentrace, which I ran for 32 seconds, and then
xentrace_format. This requires some format definitions. I find none in dom0. Has anyone ever run this in qubes? The only definitions file I can find thru the goog is 16 years old. Surely someone would have added a new trace ID to xen in the past 16 years! Otherwise, I assume it is not used / not useful. Are there people working on performance? is this the right place to ask?
Orthogonaly, I just discovered that the dom0 kernel has some
/sys/kernel/debug/events/... defined. These are cute. Someone went to a lot of trouble to expose these as a /sys filesystem component. Is this what
perf top uses to print trace info?
Anyway, I now know that
perf top is available in dom0 so i guess I can go off and see how far I get with that.
Any pointers appreciated.