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[Xen-devel] Problems Running Xenoprofile w/ Passive Domains

  • To: <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Phil Winterfield (winterfi)" <winterfi@xxxxxxxxx>
  • Date: Mon, 24 May 2010 15:26:33 -0700
  • Authentication-results: sj-iport-2.cisco.com; dkim=neutral (message not signed) header.i=none
  • Delivery-date: Mon, 24 May 2010 15:27:27 -0700
  • Importance: low
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Priority: Non-Urgent
  • Thread-index: Acr7kCorV493np+RQDmXfidq7ZdqyA==
  • Thread-topic: Problems Running Xenoprofile w/ Passive Domains

I would like to perform some passive domain profiling using oprofile-0.9.6 + the passive domains patch in ‘oprofile-0.9.3-xen-r2.patch’.  Both 0.9.6 and 0.9.5 are giving the same error message, shown below, when the profiling daemon is started.  My searches show that this is a known problem but no fixes have been offered.


Does anyone know of a fix or workaround for this?  I am running xen-4.1 + pvops dom0 x86_64 on a Nehalem based server.


[root@GreenCity01 oprofile-0.9.6]# opcontrol --start-daemon --xen=/boot/xen-syms-4.1-unstable --passive-domains=2 --passive-images=/home/winterfi/ios/ngma-l3is-m --vmlinux=/var/tmp/vmlinux

/usr/local/bin/opcontrol: line 1401: /dev/oprofile/passive_domains: Permission denied

Error: counter 0 not available nmi_watchdog using this resource ? Try:

opcontrol --deinit

echo 0 > /proc/sys/kernel/nmi_watchdog

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