feature request: record build space used

[Joe Marcus Clarke]

On Wed, 2008-07-23 at 21:46 +0300, Ion-Mihai Tetcu wrote:
> On Wed, 23 Jul 2008 12:18:16 -0400
> Wesley Shields <wxs at FreeBSD.org> wrote:
> 
>  On Wed, Jul 23, 2008 at 12:11:48PM -0400, Joe Marcus Clarke wrote:
> > > On Wed, 2008-07-23 at 13:59 +0300, Ion-Mihai Tetcu wrote:
> > > > Yeh, an other one ;)
> > > > 
> > > > 
> > > > It would be very useful to me to have, for each port, stored in
> > > > the database the total size of the space it occupies, together
> > > > with base OS and dependencies, at build time. This value should
> > > > be updated, if bigger that current values, even if the build
> > > > fails.
> > > 
> > > How would one know the size before the port builds?  Dependencies
> > > are one thing, but we have no concept of size (even distfile size)
> > > before buildscript is called.
> > 
> > You can get a rough idea of it based upon the previous build?  Take
> > the previous build and add on N% of space for growth?
> 
> Exactly. While it might fail for a few ports that suddenly grow, it will
> work for 99%.
> 
> From my educated guess:
> - for at least 50% of the ports tindy is spending more time untaring
> the jail that doing anything else. 
> - for 95% of the ports 2GB of RAM-based build space is more that
> enough;
> 
> What I'd like is to be able to have everything in RAM for those 95%
> without maintaining an exceptions list by hand. For the current
> hardware QA Tindy is running on I should get at least 35% "speed"
> improvement for a full run. (The jail tarball is cached by the fs in
> memory for me).

Any word on my follow up questions?  I am interested in implementing
these features, but I need more details.

Joe

> 
> 
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