* How to use perf kvm?
@ 2011-08-15 1:28 Han Pingtian
0 siblings, 0 replies; 2+ messages in thread
From: Han Pingtian @ 2011-08-15 1:28 UTC (permalink / raw)
To: yanmin_zhang; +Cc: linux-perf-users
Hello,
Could you please tell me how to use subcommand kvm of perf? I have tried:
[root@dell-pem710-02 ~]# pgrep qemu-kvm
6912
[root@dell-pem710-02 ~]# sshfs -o allow_other,direct_io 10.16.71.8:/
guestmount/6912
root@10.16.71.8's password:
[root@dell-pem710-02 ~]# perf kvm --guest --guestmount ~/guestmount top
But there is no kvm guest's info. Only host's info displayed.
Thanks in advance.
--
Han Pingtian
Quality Engineer
hpt @ #kernel-qe
Red Hat, Inc
Freedom ... courage ... Commitment ... ACCOUNTABILITY
^ permalink raw reply [flat|nested] 2+ messages in thread
* how to use 'perf kvm'?
@ 2011-03-04 8:28 Han Pingtian
0 siblings, 0 replies; 2+ messages in thread
From: Han Pingtian @ 2011-03-04 8:28 UTC (permalink / raw)
To: linux-kernel, linux-perf-users
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
^ permalink raw reply [flat|nested] 2+ messages in thread
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