September 2016
Intermediate to advanced
989 pages
24h 10m
English
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Using blktrace
There are a few tools available to perform block devices I/O monitoring and profiling.
Starting with iotop which we mentioned in the Exploring Yocto's tracing and profiling tools recipe, which gives a general idea of the throughput on a system and a particular process. Or iostat, which provides many more statistics regarding CPU usage and device utilization, but does not provide per process details. And finally blktrace that is a GPLv2 licensed tool which monitors specific block devices I/O at a low level, and can also compute
I/O operations per second (IOPS).
This recipe will explain how to use blktrace to trace block devices and blkparse, to convert the traces into human readable format.
Getting ready
To use blktrace and blkparse ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.