linux-kernel - Re: KVM: perf: a smart tool to analyse kvm events

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Message-Id: <20120216155248.6865.47935.sendpatchset@localhost.localdomain>
Date:	Thu, 16 Feb 2012 21:22:48 +0530
From:	Pradeep Kumar <psuriset@...ux.vnet.ibm.com>
To:	Xiao Guangrong <xiaoguangrong@...ux.vnet.ibm.com>,
	LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org>
Cc:	Pradeep Kumar <psuriset@...ux.vnet.ibm.com>
Subject: Re: KVM: perf: a smart tool to analyse kvm events

Xiao,

 i tried your perf events patch set on RHEL 6.1 host and failed to trace kvm-events with below error message.

  [root@kvm perf]# ./perf kvm-events report
  Warning: unknown op '{'
  Warning: Error: expected type 5 but read 1
  Warning: failed to read event print fmt for hrtimer_start
  Warning: unknown op '{'
  Warning: Error: expected type 5 but read 1
  Warning: failed to read event print fmt for hrtimer_expire_entry
  Analyze events for all VCPUs:
  VM-EXIT    Samples  Samples%     Time%         Avg time               
  Total Samples:0, Total events handled time:0.00us.
  [root@kvm perf]#          

    --Pradeep

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