Hi, Is that a repeated build? Do you know which package took extremely long? The nightly builds seem to be fine at around 4:30 hrs. -Michael > On 17 Sep 2019, at 12:18, Matthias Fischer wrote: > > Hi, > > On 13.06.2019 17:17, Michael Tremer wrote: >> Hello, >> >> I just wanted to post you an update about the build system which we have recently merged. >> >> ... > > I'm bringing this thread up again because beginning with Core 136, I > notice a significant deceleration. > > Last - clean - build from tonight: > > ... > Checking Logfiles for new Files > *** Build finished in 12:28:46 > ... > > That's a new record. Build time with Core 135 was about 7-8 hours. > > Is it the same for others? > > Best, > Matthias > >