Optimization: testcases needed

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-12-09 03:55:05

Hi,
in the past, I used to ask users for output of "bjam -d+10" to know what parts 
to optimise. That was helpful and I've made a number of optimisations, but 
still it's not very effective.

To be able to try different approaches quickly, I need to have testcases I can 
play with locally, without waiting for fresh profiles from users. It's best 
to test on Boost.Build setup used on real projects.

However, you probably don't want to send me your entire project, so I wrote a 
small script to extract Boost.Build setup. The idea is that:

1. You make a copy of your real project.
2. You run the script in the copy. All non Boost.Build files are truncated to 
zero size. This way, Boost.Build won't complain about missing sources, but 
the content is removed.
3. You pack the resulting directory and send it to me.

The python script is attached. It's pretty simple, and even has unit tests for 
added security.

I'd appreciate as many testcases as possible. I don't plan to add them to CVS 
or make them public (unless you explicitly indicate making them public is 
OK). Only I will see them.

In addition to testcase, I'd need to see your user-config.jam and 
site-config.jam (in case you have some definitions there which are required 
for the project to build).

I'd also appreciate information about time "bjam -n" takes on your project and 
hardware details (CPU, memory size, disk speed).

Thanks in advance. I hope that with testcases Boost.Build will soon get faster 
on *your* project.

- Volodya

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