Where is the benchmark code. I wonder how hard it is to get this to use the features in Parts to see how it effects the system.
Jason -----Original Message----- From: Scons-dev [mailto:[email protected]] On Behalf Of Dirk Bächle Sent: Sunday, February 1, 2015 12:54 PM To: [email protected] Subject: Re: [Scons-dev] SCons-like build system Hi all, On 27.01.2015 17:26, Kenny, Jason L wrote: > I think it is that Parts tries to use DB data smarter than SCons does. > For me the understanding of the logic needed to validate that something is > good or bad with MD5 I believe is the item that I had to learned from SCons. > [...] > during the last few days I ran and profiled SCons for the 100k files benchmark example, created by genbench.py from Aqualid's "example/benchmark" folder. All the single runs were performed on a COTS quad-core machine (4*AMD A8-6600K @ 1.9GHz) with 8GB RAM. For Aqualid 0.5.2 I get: Clean build (-j 1) = 12:37:53 Clean build (-j 4) = 4:41:33 Update (w/o changes) = 0:00:59.77 For the standard SCons 2.3.4: Clean build (-j 1) = 14:09:54 Clean build (-j 4) = 5:38:46 Update (w/o changes) = 0:17:20.25 Update (max-drift=1) = 0:17:00.07 For the experimental SCons version (switched Node class to slots + stubprocess.py wrapper), including some hacks to exploit the uniform structure of the benchmark sources, I could reduce this down to: Clean build (-j 1) = 10:58:50 Clean build (-j 4) = 3:44:20 Update (w/o changes) = 0:08:38.38 Update (max-drift=1) = 0:04:27.77 The much higher times for Aqualid in the parallel build (-j 4) come from the processing order, which queues all library archiving to the end of the build. This sent my machine thrashing/swapping, even though it has 8GB RAM...SCons is better balanced in this case, it creates each lib as soon as all its sources are compiled. I also ran a "clean/remove target" on a smaller project with 10k files each: Aqualid (aql --clean) = 3:51.93 SCons (scons -c) = 0:19.94 , this looks like a bug in Aqualid to me. Find attached the memory consumption for a "parallel clean build" (-j 4) run with SCons... Best regards, Dirk _______________________________________________ Scons-dev mailing list [email protected] https://pairlist2.pair.net/mailman/listinfo/scons-dev
