blktrace binary package in Ubuntu Focal s390x

 blktrace is a block layer IO tracing mechanism which provides detailed
 information about request queue operations up to user space. There are
 three major components that are provided:
 .
 blktrace: A utility which transfers event traces from the kernel
 into either long-term on-disk storage, or provides direct formatted
 output (via blkparse).
 .
 blkparse: A utility which formats events stored in files, or when
 run in live mode directly outputs data collected by blktrace.
 .
 iowatcher: A utility to visualize block I/O patterns. It generates graphs
 from blktrace runs to help visualize IO patterns and performance. It can
 plot multiple blktrace runs together, making it easy to compare the
 differences between different benchmark runs.

Source package