http://defect.opensolaris.org/bz/show_bug.cgi?id=2620
Summary: Cause for wakeups don't provide the "best" information
Classification: Development
Product: power-mgmt
Version: unspecified
Platform: ANY/Generic
OS/Version: OpenSolaris
Status: NEW
Severity: enhancement
Priority: P3
Component: powertop
AssignedTo: rafael.vanoni at sun.com
ReportedBy: patrick.bredenberg at sun.com
CC: tesla-dev at opensolaris.org
Estimated Hours: 0.0
The causes for wakeups reported by PowerTOP don't always provide the most
useful information. The easiest example of this can be seen if a disk is
hammered with reads (I used dd(1) to test this) the cause for wakeups reported
by PowerTOP was the disk nexus driver (aac(7D)) as opposed to the leaf driver
(sd(7D)). This is confusing and can be a disservice to the user because the
reason for increased activity isn't really the bus, but the disk. For power
management purposes, it'd be far more helpful if the user could see the sd,
ssd, etc. driver because then the user could go make changes as appropriate.
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