Re: Clone effectiveness
Mats Wichmann <[email protected]>
| Newsgroups | gmane.comp.programming.tools.scons.user |
|---|---|
| Message-ID | <[email protected]> |
On 09/13/2018 12:52 PM, Damien Hocking wrote: > We do this too. Most dlls and sos have a cloned environment. As I said earlier, we clone lots (>90% of our sconscripts contain a Clone() call), but the actual build time dwarfs the "process the SConscripts" phase (*) so I don't worry much about it. We're not getting killed on memory; I can build easily enough in a 2gb Vagrant-provisioned (Linux) image. So while I'd like to *know* the numbers, it's mostly curiosity. Maybe we can resurrect some of the benchmarking/timing code that exists in the codebase now to get more info? * - recent build timings: Total build time: 360.533189 seconds (using scons -j4) Total SConscript file execution time: 14.785102 seconds 15 seconds is slow, but if I sped up the sconscript time by 50%, I'd still make no more than a 2% impact on the overall time. >> On Sep 13, 2018, at 12:27 PM, Pierre-Luc Boily <[email protected]> wrote: >> >> Hello! >> >> Just read on the forum : >> >> /Here's the caveat. >> Don't make a gazillion Clone's they're not lightweight. >> If you make 100, it won't kill you, if you make 1000's you may start seeing >> memory and speed impacted./ >> >> Our project branch contains 800 sconscript files. From those 800, 300 are >> for windows compilation, 500 are for unix compilation. >> >> We systematically create a clone of the environment at the beginning of >> *each *sconscript. So, if I understand well, it might not be the best >> approach. It would be better to do a Clone only when it is needed? >> Reducing the number of clone could potentially speed up the creating of the >> tree? >> >> Thx >> >> >> >> -- >> Sent from: http://scons.1086193.n5.nabble.com/Users-f16930.html >> _______________________________________________ >> Scons-users mailing list >> [email protected] >> https://pairlist4.pair.net/mailman/listinfo/scons-users > _______________________________________________ > Scons-users mailing list > [email protected] > https://pairlist4.pair.net/mailman/listinfo/scons-users > _______________________________________________ Scons-users mailing list [email protected] https://pairlist4.pair.net/mailman/listinfo/scons-users