Re: [gentoo-dev] compile time statistics

["Håvard Wall" <haavardw@ifi.uio.no>]

Werner Van Belle wrote:
> Altough it's a nice proposal that would be really usefull, I still think there 
> are some serious problems involved. Compilation time is non lineair. 
> Depending on how much cache, how much memory, how fast your hard-disk is, 
> what your bus-speed is and above all, what the user is doing at the same time 
> while upgrading his machine will seriously impact compilation time. All of 
> these factors are very difficult to take into account. 

I believe gentoo-stats is already sampling a lot of the needed 
information. An estimate could primarly be based on some "major" 
factors; perhaps cpu-type and clock frequency. Then, if enough 
statistics is available for the current architecture, on other settings 
as well, sucb as -O flags and size of main memory (MAKEOPTS?). A kind of 
hierarchical estimate... Could perhaps be hard to implement in practice 
though (?).

But I believe there probably is some limited set of factors that could 
provide a reasonably good estimate.

--
hw


--
gentoo-dev@gentoo.org mailing list