Gentoo Archives: gentoo-dev

From: Heiko Wundram <heikowu@×××××.de>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Re: emerge suggestions
Date: Wed, 08 Sep 2004 23:46:48
Message-Id: 200409090146.45636.heikowu@ceosg.de
In Reply to: Re: [gentoo-dev] Re: emerge suggestions by Chris White
1 Am Mittwoch, 8. September 2004 18:43 schrieb Chris White:
2 > How are you going to effectively measure the times?
3
4 IIRC, there once was a proposal to do this using bash-units. Each product in
5 the tree gets assigned a bash unit, which is a floating point number >0 which
6 measures how long compilation takes relative to compiling some certain
7 version of bash.
8
9 Now, all that needs to be done is to measure package compilation and merging
10 time, divide by the number of bash units this package has, and you get an
11 estimate on the time for a bash unit on this computer. The more packages you
12 merge, the finer this number will become by simply averaging it out. Of
13 course, this does not take into account changing the LDFLAGS (which should
14 make up for the biggest part of different merge times), or CFLAGS (which
15 might also change timing by varying optimization levels and swap
16 requirement). But, anyway, these numbers don't change anything about the
17 underlying unit, which should be to a large extent platform and machine
18 independent.
19
20 I don't know when this proposal came up, I read about it on some forum, some
21 time ago.
22
23 Heiko.
24
25 --
26 gentoo-dev@g.o mailing list

Replies

Subject Author
Re: [gentoo-dev] Re: emerge suggestions Ned Ludd <solar@g.o>
Re: [gentoo-dev] Re: emerge suggestions Thomas de Grenier de Latour <degrenier@×××××××××××.fr>
Re: [gentoo-dev] Re: emerge suggestions Chris Gianelloni <wolf31o2@g.o>