Flash vs Cash

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Global Marketing CTO = oxymoron?

Technical marketing? Is that taught in schools?

Having Dtrace being able to scan through the entire stack from OS to storage is the game changer. EVERYONE is interested in system performance, and to do an accurate assessment you need good tools. These do NOT exist today in the UNIX world. My teams have struggled to do this with AIX - because there are so many virtualized layers. When you virtualize your system, your problems also become virtual - and are MUCH harder to track down.

We had a giant financial package running at Ford on a large P690. It was connected to a SAN and EMC storage. The filesystems were VERITAS. We had a problem with I/O slowness, so we tried to figure out what was wrong. The AIX tools barely showed any problem. VERITAS reported everything was A-OK. EMC showed all disks were functioning within spec and the cache-hit ratios were good. Where's the problem? At least Oracle reported that the filesystems had long wait times - so we had SOME evidence of what we all could "feel". It's very hard to track down I/O problems through the layers - and if Dtrace + ThumperII can solve that, I see a mass migration to Sun

Posted by: Roger Ramjet   Posted on: 02/19/09 You are currently: a Guest | Members login | Terms of Use

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