I too deal with this all the time. Many Pof C's consist of clients dumping PC server workload exactly as is into linux virtual machines. Not going to be kind to a "Z" box.
When I ask for "Z" performance data or PC and SUN server data I usually get a blank stare. One client that is having major performance problems on "Z" linux is too busy to turn monitor on! Let alone have a performance tool. It's not that hard to instrument. And you want a silver bullet? 5 minute answer? What? One trend that really concerns me is the move to "P" series linux. Watch out: if "Z" P of C's are done improperly we will lose many opportunities to get linux on VM shops up running and stable - with acceptable performance and costs.
Server data usually consists of a 1 page sheet listing the CPU speeds and memory size of the boxes. That's configuration data. When I finally prodded a client into a weeks worth of data from 8 servers the results were enlightening.
End of the day it's nothing new, business as usual really.
David Kreuter
Rob van der Heij wrote:
On Thu, 2 Dec 2004 20:52:31 -0500, Post, Mark K <[EMAIL PROTECTED]> wrote:
some people don't yet have enough backing from management to do that. Too many people keep hearing that Linux is free (instead of Free), and they don't understand why it gets so expensive. Of course, doing things the
Sure... Want to know how much time I wasted last month trying to look into a performance issue with a customer where I did not have the proper tools to do so? That time was probably worth a year's contract for the right tools. But sometimes you cannot get it done the way you like it.
It is just so sad to see a proof of concept fail just because they did not get the right tools and people to fix the default tuning parameters.
Rob -- Rob van der Heij rvdheij @ gmail.com
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