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Re: Anyone else think X has a performance problem ?

On Tuesday, Mar 24th 2009 at 08:14 -0000, quoth Alan Cox:

=>> regardless the difference between X and no X in each version/hardware is 
=>> astounding! what are the reasons for this, your not telling me that X is 
=>> chewing up that much cpu cycles to turn a 1minute 40sec operation into a 
=>> 4minute 53sec one?
=>Why do you assume this has anything to do with CPU cycles and not
=>graphics performance ?
=>> i think this merits much further analysis!
=>Feel free, but you need to do it in a disciplined repeatable one change
=>at a time fashion.

Performance issues are very touchy feely, and Alan is correct. One change 
at a time is the only proper way to measure any kind of performance 

Back in an old AI class a few decades ago, Patrick Henry Winston had a 
quote in his AI book that stuck with me. 

	Michaels Theorem: You can't learn anything unless you almost
			  already know it.

Measure something. Change one thing, and measure again.

Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net

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