BM Seer Unofficial thoughts from an anonymous Sun employee

Dell now understands importance of server utilization

Wednesday Feb 18, 2009

Even Dell is starting to get it. Server utilisation levels in a data centre are critical to advance overall performance, improving productivity, and reducing costs.

In: http://www.dell.com/downloads/global/power/ps1q09-20090176-esser.pdf

They say:

    Operational policies designed to increase server utilization and advance overall performance and efficiency can lead to dramatic improvements in data center productivity without increasing power consumption.

Yes indeed, I've been blogging that since 2005, remember this little gem from 2006: http://blogs.sun.com/bmseer/entry/the_total_tyranny_of_low

But I ran into several customers last week where a major computer vendor (not Dell or Sun) was telling everyone that 10% server utilisation was the most important utilisation to measure - SHAME ON YOU!

Can a group at SPEC or TPC just get on with adding power measurement to all benchmarks as they exist now at benchmark utilisation levels? ...Or just what is going on behind closed doors?

DISCLOSURE: I'm not on any SPEC or TPC committees, nor do I read any confidential updates from Sun employees who do.

[2] Comments
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Comments:

Interesting. Adrian Cockcroft has long maintained that utilization is useless as a metric. Of course, at that time everyone's goal was the highest possible utilization.

Posted by Brian Utterback on February 19, 2009 at 08:32 AM PST #

This should be qualified: "utilization is useless as a *TUNING* metric"

Completely agree, for attempting to _tune_ servers, Utilisation is a bad metric, I agree with Cockcroft. One can have many inefficient or useless processes just wasting CPU cycles.

In the posting, the issue is if you have mostly idle servers you are being *very very* wasteful.

Posted by BM Seer on February 19, 2009 at 10:01 AM PST #

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