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Subjecthow to use 'perf kvm'?
Hello,

Can someone tell me how to use the subcommand 'kvm' of the perf tool?
I'm trying to use it this way:

perf kvm --guest --guestkallsyms kallsyms top

where kallsyms is copied from the kvm guest. But nothing useful is
displayed, only some headers:


-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
PerfTop: 0 irqs/sec kernel:-nan% us:-nan% guest kernel:-nan% guest us:-nan% exact: -nan% [1000Hz cycles], (all, 2 CPUs)
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

samples pcnt DSO
_______ _____

exiting.

Thanks in advance.

--
Han Pingtian
Quality Engineer
hpt @ #kernel-qe
Red Hat, Inc
Freedom ... courage ... Commitment ... ACCOUNTABILITY


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