By user13366078 on Mar 02, 2009
The cool thing: He animated the data. That's right. Using a Perl script, he draws greener or redder dots depending on whether a particular range of blocks on disk sees more reads or writes. By aggregating data over many hours while doing interesting tasks such as backup, he created a series of very cool animations.
In his first post, he shows us the inner life of a Postfix mail queue as an animated GIF:
Congratulations, Pascal, this is way cool stuff. You really should upload these to YouTube so people can embed them in their blogs :).
Update: Meanwhile, pascal told me that he uploaded his videos on YouTube already. He has a full playlist full of them. Enjoy!