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I observe two faults in the Ubuntu 14.04LTS system monitor:
1. If a CPU is marked offline, the system monitor does not report
any higher-numbered online CPUs. E.g.,:
a. Run system monitor - it reports 8 CPUs.
b. Mark CPU 3 offline, via:
echo 0 | sudo tee /sys/devices/system/cpu/cpu3/online
c. Restart system monitor: It now reports only 3 CPUS (1,2,3).
The system monitor display not change immediately, so I suspect the
immediate failure is caused at system monitor initialization, presumably
because it assumes that the first offline CPU indicates the end of
CPUs for this system. Which is not true, of course.
2. In the system monitor display, CPUs are numbered 1...N, for an N-CPU
system. This is incorrect, because CPUs are numbered from 0, not 1.
This can lead to confusion when looking at what particular processors
are doing.
** Affects: gnome-system-monitor (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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system monitor wrong if cpu offline
https://bugs.launchpad.net/bugs/1404990
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