Comments on: New Aspersa I/O analysis tool, diskstats

By: Justin Swanhart

Justin Swanhart — Tue, 08 Feb 2011 03:23:41 +0000

Mark,

I pushed the data from /proc/diskstats into Ganglia using MonAMI plugins (written in C). MonAMI is actually pretty cool and can probe data once and push it to multiple places (like Ganglia).

I also wrote MonAMI plugins for /proc/cpustat and for mysql.

The plugins are in the Proven Scaling SVN server. I can point you to them if you are interested.

By: Xaprb

Xaprb — Mon, 07 Feb 2011 17:03:01 +0000

Mark, I wrote some Cacti templates that pull from /proc/diskstats. I still haven’t even learned Ganglia yet. I need to someday.

By: Dan

Dan — Mon, 07 Feb 2011 15:03:44 +0000

One feature I’m missing is the ability to control reads/writes on a per-process basis, having that would make this the mother of all disk stat tools

By: Mark Callaghan

Mark Callaghan — Sun, 06 Feb 2011 17:41:41 +0000

I used the aspersa tools to understand response times for reads vs writes. That data is invaluable for servers with RAID write caches which make writes very fast.

We then improved our monitoring to pull read and write latency directly from /prod/diskstats. Have you updated any of the monitoring scripts that you publish (for Ganglia)?

Thanks for publishing this.