From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752808Ab2BTKVm (ORCPT ); Mon, 20 Feb 2012 05:21:42 -0500 Received: from e38.co.us.ibm.com ([32.97.110.159]:49740 "EHLO e38.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752506Ab2BTKVk (ORCPT ); Mon, 20 Feb 2012 05:21:40 -0500 Date: Mon, 20 Feb 2012 15:50:29 +0530 From: Pradeep Kumar Surisetty To: Xiao Guangrong Cc: LKML , KVM Subject: Re: KVM: perf: a smart tool to analyse kvm events Message-ID: <20120220102029.GC8666@linux.vnet.ibm.com> Reply-To: Pradeep Kumar Surisetty References: <20120216155248.6865.47935.sendpatchset@localhost.localdomain> <4F3DBCD8.2020505@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <4F3DBCD8.2020505@linux.vnet.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12022010-5518-0000-0000-0000025E4467 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Xiao Guangrong [2012-02-17 10:35:04]: > On 02/16/2012 11:52 PM, Pradeep Kumar wrote: > > > 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]# > > > > > Thanks for your try, Pradeep! > > It seems that kvm events do not be recorded. > > Do your guest was running when kvm-events was executed? Hello Xiao my guest was not running when i executed. > What is the output of "./perf script | grep kvm_*"? [root@phx3 perf]# ./perf script | grep kvm_* 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 # cmdline : /home/patch/linux/tools/perf/perf record -a -R # -f -m 1024 -c 1 -e kvm:kvm_entry -e kvm:kvm_exit -e # kvm:kvm_mmio -e kvm:kvm_pio -e timer:* # event : name = kvm:kvm_entry, type = 2, config = 0x2ef, # config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, # id = { 6241, 6242, 6243, 6244, 6245, 6246, 6247, 6248 } # event : name = kvm:kvm_exit, type = 2, config = 0x2ea, # config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, # id = { 6249, 6250, 6251, 6252, 6253, 6254, 6255, 6256 } # event : name = kvm:kvm_mmio, type = 2, config = 0x2dd, # config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, # id = { 6257, 6258, 6259, 6260, 6261, 6262, 6263, 6264 } # event : name = kvm:kvm_pio, type = 2, config = 0x2ed, # config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, # id = { 6265, 6266, 6267, 6268, 6269, 6270, 6271, 6272 } no symbols found in /sbin/killall5, maybe install a debug package? --Pradeep > > -- > To unsubscribe from this list: send the line "unsubscribe kvm" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >