Re: [boost] [rdb, fusion, profile_templates] 0.2.03 - compilation speedup

Subject: Re: [boost] [rdb, fusion, profile_templates] 0.2.03 - compilation speedup
From: joel falcou (joel.falcou_at_[hidden])
Date: 2009-12-06 14:14:39

Jean-Louis Leroy wrote:
> I have uploaded version 0.2.03 to the vault.
>
> No new features this time but improvements in compilation speed. The 
> test_odbc project took more than 4.5 minutes to build in debug mode 
> (msvc9, ThinkPad x200s, Intel L9400 with 2 cores @ 1.86 Ghz, 4 Gb RAM) 
> and...17 minutes on a 2Gb RAM computer ! This was becoming unbearable.
>
> After a run through profile_templates - thanks to Steven Watanabe for 
> creating this tool ! - I replaced the fusion::maps that were used to 
> gather clause information in sql statement templates with a simpler, 
> less flexible, less orthogonal and less capable version of my own. The 
> result was a 41% speedup (calculated as (old-new)/old) on the 4 Gb 
> computer and 85% on the 2Gb one.
>
> The number of template instantiations, as reported by 
> profile_templates, dropped from 86330 to 62771. If someone is 
> interested I can post the complete profiling reports.
Improving fusion compile time is a desirable goal. I think you can 
possibly post your profiling options so we can look at fusion problems.

-- 
___________________________________________
Joel Falcou - Assistant Professor
PARALL Team - LRI - Universite Paris Sud XI
Tel : [phone]