The blkparse utility will attempt to combine streams of events for various devices on various CPUs, and produce a formatted output of the event information. As with blktrace, some details concerning blkparse will help in understanding the command line options presented below.
blkparse may be run in a live manner concurrently with blktrace by specifying -i - to blkparse, and combining it with the live option for blktrace. An example would be:
% blktrace -d /dev/sda -o - | blkparse -i -
By default, blkparse sends formatted data to standard output. This may be changed via the -o option, or text output can be disabled via the-O option. A merged binary stream can be produced using the -d option.