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blktrace

utilities for block layer IO tracing

Description

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.

Homepage

http://brick.kernel.dk/snaps/


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