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[Xen-users] Don't mount hardware performance counter using xenoprof
| To: | xen-users@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-users] Don't mount hardware performance counter using xenoprof |
| From: | Yuto Nakai <yuto.k2c@xxxxxxxxx> |
| Date: | Fri, 7 Jan 2011 15:09:40 +0900 |
| Cc: | |
| Delivery-date: | Thu, 06 Jan 2011 22:11:23 -0800 |
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Hi, I want to use xenoprof to profile the overhead of the hypervisor.� I patched the oprofile-0.9.5 using the patch from�xenoprof.sourceforge.net Debian GNU/Linux 5.0 (lenny) Xen-4.0.1 + 2.6.32.27 (linux-2.6-pvops.git) Dom0 My platform is Intel(R) Core(TM) i7 CPU � � � � � 960 �@ 3.20GHz My problems are: In Dom0, �But hardware performance counters don't be mounted� after initialization (opcontrol --init)
# ls /dev/oprofile backtrace_depth � �cpu_buffer_size � pointer_size buffer ���� � � � � � � � cpu_type � � � � � �stats�
buffer_size � � � � � � dump � � � � � � � �time_slice� buffer_watershed � �enable
0(and 1,2,3) directories are not exist.
Is there any reason for this ?
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