Hello Xenoprof Users,
Can someone please verify the steps to get a oprofile session profile
multiple sessions? I am using a file VBD for spawning two guest OS
domains on the host. I am doing the following:
1.) On dom0
Opcontrol --xen=/boot/xen-syms-blah
2.) On domU domID: 41
Opcontrol --vmlinux=/boot/vmlinux-2..blah
3.) On domU domID: 42
Opcontrol --vmlinux=/boot/vmlinux-2..blah
4.) On dom0
Opcontrol --start-daemon --active-domains=41,42
5.) On domU, 41
Opcontrol --reset
Opcontrol --start
Error:
Using default event: CPU_CLK_UNHALTED:100000:0:1:1 Using 2.6+ OProfile
kernel interface.
Reading module info.
Failed to open profile device: Operation not permitted Couldn''t start
oprofiled.
Check the log file "/var/lib/oprofile/oprofiled.log" and kernel syslog
6.) On domU, 42
Opcontrol --reset
Opcontrol --start
Error:
Using default event: CPU_CLK_UNHALTED:100000:0:1:1 Using 2.6+ OProfile
kernel interface.
Reading module info.
Failed to open profile device: Operation not permitted Couldn''t start
oprofiled.
Check the log file "/var/lib/oprofile/oprofiled.log" and kernel syslog
7.) On dom0
Opcontrol --reset
Opcontrol --start
This works...
Thanks,
Nikhil
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