Re: [gentoo-dev] Re: emerge suggestions

[Heiko Wundram <heikowu@ceosg.de>]

Am Mittwoch, 8. September 2004 18:43 schrieb Chris White:
> How are you going to effectively measure the times?

IIRC, there once was a proposal to do this using bash-units. Each product in 
the tree gets assigned a bash unit, which is a floating point number >0 which 
measures how long compilation takes relative to compiling some certain 
version of bash.

Now, all that needs to be done is to measure package compilation and merging 
time, divide by the number of bash units this package has, and you get an 
estimate on the time for a bash unit on this computer. The more packages you 
merge, the finer this number will become by simply averaging it out. Of 
course, this does not take into account changing the LDFLAGS (which should 
make up for the biggest part of different merge times), or CFLAGS (which 
might also change timing by varying optimization levels and swap 
requirement). But, anyway, these numbers don't change anything about the 
underlying unit, which should be to a large extent platform and machine 
independent.

I don't know when this proposal came up, I read about it on some forum, some 
time ago.

Heiko.

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