• 原文 Debugging disk issues with blktrace, blkparse, btrace and btt in Linux environment

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: a kernel component, a utility to record the i/o trace information …

• man btrace
• blktrace.git

btrace can show detailed info about what is happening on a block device io queue. This is valuable for diagnosing and fixing performance or application problems relating to block layer io.

The btrace script provides a quick and easy way to do live tracing of block …