On Tue, May 19, 2009 at 10:37:45AM -0700, Terry Whatley wrote: > 4.3.4 disk power attribute driver properties > > sd(7D) will export a set of driver properties to indicate a disk's > power attributes. See Table-2. > > Table-1 Disk Power Attribute Properties (array properties are indexed > by power state in order of ascending power levels) > ------------------------------------------------------------------------ > Prop Name Prop Type | Prop Description > ------------------------------------------------------------------------ > "pm-resource-type" String | "resource-spindle-disk" for the > | spindle disks > ------------------------------------------------------------------------ > "pm-perf" Integer array | array of average R/W > | performance percentages > ------------------------------------------------------------------------ > "pm-pwr-saving" Integer array | array of average power saving in > | units of 0.1watt > ------------------------------------------------------------------------ > "pm-latency" Integer array | array of time to first data in units > | of 100ms > ------------------------------------------------------------------------ >
exporting performance statistics via device properties seems weird to me. is there a precedent for this? why isn't this information being exported via kstats? do we really want to train users to start using prtconf -v to get performance data? ed
