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The Boot Prefetch Action

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The Boot Prefetch action collates and summarizes events relevant to boot when using On/Off Trace Capture Tool.

 xperf -i <trace file> ... [-o <output>] -a bootprefetch ...
Option Description
-summary
 Show the summary of boot prefetching
-events
 Dump ReadyBoot events with earliness information
-disktime
 Show the disk time breakdown during boot prefetching.

If the -events option is used the -pattern option may be used

Option Description
-pattern
Dump also overlapping events when dumping events

If the -pattern option is used, -type name may be used.

Option Description
-type name
 Dump only specific type of events when dumping events in pattern view
name is one of the five types: hit, prefetch, miss, pend, and write

If the -events option is used the -range option may be used.

Option Description
-range t1 t2
 Process ReadyBoot events completed between times T1 and T2.

If no report type is selected, default is to show the summary.