Friday 29 August 2008

27 stack frames on 32 bit OS and 22 stack frames on 64 bit OS

64 bit JIT and 32 bit JIT are 2 very different beasts which is what one would suspect. But still I was rather surprised that 64 bit JIT was able to reduce the call stack of a call by 20% in comparison with 32 bit JIT. A piece of my code crawls the call stack to gather some runtime characteristics and it broke on a 64 bit machine. That's how I started a small investigation and found this difference. In most cases it's not a good idea to rely on the way JIT works as this is subject to change but from time to time there is simply no other way. If you look for more information about 32/64 JIT you can check this blog post of Scott Hanselman which is an overview with links to other Microsoft bloggers that dive much deeper into details.

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Thursday 28 August 2008

Henrik Kniberg and his list of top 10 ways of screwing Scrum

The Agile methodologies of today hesitate to state that there are practices that work in every single environment but from my experience there is at least one that works in 99,999999% of cases :). It's called Team. As long as people work as a team and not as a group of individuals everything is possible and (nearly) every problem can be overcome. Just my 2 cents.
Watch this video to see Henrik talk in a compelling way about what you should avoid when you practice Scrum. Every second slide is accompanied by a real-life story which makes this 1,5h presentation fly in no time.