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Hi there, I am getting very low throughput (around 0.29Mbps) while running netperf benchmark for guest to guest communication on a single physical host. To analyse where the time is spent in hypervisor I wanna use profiling. Please help me choosing good profiler according to my requirments. Should it be better in my case, Xentrace, gprof, xenoprof  or Oprofile. Is it possible to use some vtune

Hi there, I am getting very low throughput (around 0.29Mbps) while running netperf benchmark for guest to guest communication on a single physical host. To analyse where the time is spent in hypervisor I wanna use profiling. Please help me choosing good profiler according to my requirments. Should it be better in my case, Xentrace, gprof, xenoprof  or Oprofile. Is it possible to use some vtune

Hello, I''d understand if setting CONFIG_NO_HZ=y in dom0/domU is required/suggested. Because Xen supports no-tick-on-idle mechanism ( http://virt.kernelnewbies.org/ParavirtBenefits#head-360a0849a0639297396542dddcc691e4100287ab) ticks come from the hypervisor only when needed by the guest so, in my understanding, setting CONFIG_NO_HZ=n will make no difference. Any comments? Regards, Marco