GCC "-fparallel-jobs" up to ~1.9x speedup when compiling individual files in parallel

2020-08-22 Thread Germano Massullo
I think soon we will have a big boost in Koji performances thanks to Giuliano Belinassi and his work on addressing GCC parallelization bottlenecks. According to Phoronix, compiling individual files in parallel may have up to ~1.9x speedup: https://www.phoronix.com/scan.php?page=news_item&px=GCC-fpa

Re: GCC "-fparallel-jobs" up to ~1.9x speedup when compiling individual files in parallel

2020-08-25 Thread Daniel P . Berrangé
On Sat, Aug 22, 2020 at 12:53:24PM +0200, Germano Massullo wrote: > I think soon we will have a big boost in Koji performances thanks to > Giuliano Belinassi and his work on addressing GCC parallelization > bottlenecks. According to Phoronix, compiling individual files in > parallel may have up to

Re: GCC "-fparallel-jobs" up to ~1.9x speedup when compiling individual files in parallel

2020-08-25 Thread Jeff Law
On Tue, 2020-08-25 at 10:17 +0100, Daniel P. Berrangé wrote: > On Sat, Aug 22, 2020 at 12:53:24PM +0200, Germano Massullo wrote: > > I think soon we will have a big boost in Koji performances thanks to > > Giuliano Belinassi and his work on addressing GCC parallelization > > bottlenecks. According

Re: GCC "-fparallel-jobs" up to ~1.9x speedup when compiling individual files in parallel

2020-08-25 Thread Jakub Jelinek
On Tue, Aug 25, 2020 at 08:17:57AM -0600, Jeff Law wrote: > > IOW, don't get too excited by the x1.9 speedup claim. I doubt we'll > > see that in kojki except in niche scenarios where a project's build > > is bottlenecked by a serialization point on compiling one file. > Right. Also note the code