Public bug reported:
While trying to identify why X11 is consuming most of the cpu while
running lightdm, I found that currently perf is broken as 'perf top'
shows nothing at the screen.
Kernel:
linux-image-3.2.0-1408-omap4 3.2.0-1408.11
linux-ti-omap4-tools-3.2.0-1408 3.2.0-1408.11
Image: ARMHF Daily from Mar 15/2012 (Pandaboard 4430).
Current output:
# perf_3.2.0-1408 top
PerfTop: 0 irqs/sec kernel:-nan% exact: nan% [1000Hz cycles],
(all, 2 CPUs)
-------------------------------------------------------------------------------
exiting.
** Affects: linux-ti-omap4 (Ubuntu)
Importance: Medium
Status: Confirmed
** Changed in: linux-ti-omap4 (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux-ti-omap4 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/956693
Title:
Broken perf with Ubuntu-3.2.0-1408.11 at Pandaboard
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