http://defect.opensolaris.org/bz/show_bug.cgi?id=2861
Summary: C0 residency sits at 100% and all wakeups are 0.0% when
interval is large
Classification: Development
Product: power-mgmt
Version: unspecified
Platform: i86pc/amd64
OS/Version: Solaris
Status: NEW
Severity: major
Priority: P2
Component: powertop
AssignedTo: rafael.vanoni at sun.com
ReportedBy: patrick.bredenberg at sun.com
QAContact: patrick.bredenberg at sun.com
CC: tesla-dev at opensolaris.org
Estimated Hours: 0.0
When allowed to run over long intervals (100 was used for testing), PowerTOP
reports the system is in C0 100% of the time while all wakeups are 0.0% and the
P-state is in the lowest frequency 100% of the time, in a quiesced system.
These values appear after the first iteration. The following snippet is from
data collected with -d 4 -t 100:
Cn Avg residency
C0 (cpu running) (100.0%)
C1 0.0ms (0.0%)
P-states (frequencies)
2003 Mhz 100.0%
2336 Mhz 0.0%
2670 Mhz 0.0%
3166 Mhz 0.0%
Wakeups-from-idle per second: 0.0 interval: 100.0s
Top causes for wakeups:
0.0% ( 0.0) <kernel> :aac`aac_daemon
0.0% ( 0.0) <kernel> :cpudrv`cpudrv_pm_monitor_disp
0.0% ( 0.0) <kernel> :ip`igmp_slowtimo
0.0% ( 0.0) <kernel> :ip`ip_trash_timer_expire
.
.
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