[Xen-users] Using XenoProf...

[Ahmad Hassan <ahmad.hassan@xxxxxxxxx>]

Hi,

I am working on profiling the XEN guest VMs. I have installed XEN Hypervisor on AMD-64 machine and then I created a VM which is running debian Lenny operating system.

I am interested in looking at the CPU time and the # of instructions executed by any module. I don't know exactly which events should cover these.

I tried to run XenOprofile as follows

dom0> opcontrol --reset

dom0> opcontrol --start-daemon --event=CPU_IO_REQUESTS_TO_MEMORY_IO:1000000
--xen=/boot/xen-syms-3.4.1 –vmlinux=/boot/vmlinux
--passive-domains=1 --passive-images=/boot/vmlinux

dom0> opcontrol --start

Benchmark start/finish

dom0> opcontrol --stop


Opreport -l gives the following warning


ah@hactar-03:~$ opreport -l
opreport error: No sample file found: try running opcontrol --dump

or specify a session containing sample files


where as cat /var/lib/oprofile/samples/oprofiled.log  returns this:


---- Statistics for cpu : 1
Nr. samples lost cpu buffer overflow: 0
Nr. samples received: 0

Nr. backtrace aborted: 0
Nr. samples lost invalid pc: 0

---- Statistics for cpu : 0
Nr. samples lost cpu buffer overflow: 0
Nr. samples received: 0
Nr. backtrace aborted: 0
Nr. samples lost invalid pc: 0

.......repeated



Please help if some one used xenoprof for profiling. Thanks.

Best Regards, Hassan

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