Messages in this thread | | | Date | Wed, 22 Dec 2010 14:34:03 -0700 | From | Matthew Wilcox <> | Subject | Re: [PATCH] Prevent users from disabling tickless |
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On Wed, Dec 22, 2010 at 01:00:37PM -0800, Frank Rowand wrote: > Why remove the ability to make the configuration choice? Why not > just add the info about performance impact to the help text and > let me shoot myself in the foot (that is the unix way (tm)) if > I desire to?
$ wc -l .config 2601 .config
It's too hard to get every single config option right ... unless it's a works / doesn't work choice, having a "make my performance suck" config option is a bad idea. I didn't even know I had this config option set the wrong way until I ran powertop on my desktop, implemented its recommendations for things I'd screwed up in my .config, then reran the tests I was doing.
Someone with a big server might not run powertop, so wouldn't be told they'd got it run. Sure, we could write a special tool to check peoples config options to see if they've got some common config options set wrongly ... but I'm rather reminded of Brazil. http://farm1.static.flickr.com/50/109556460_5362c5f2b5_o.jpg
-- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."
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