Hi, I just upgraded my macbook to El Capitan, recompiled everything, and since then ROOT and all executables I built linking the ROOT libraries take a long time to run. After some debugging I discovered that the linker spends 30s on loading libCore.so I built a small executable to test this proble…

Hi, we do quite many things during the time accounted to the load of libCore, e.g. reading rootmaps, initialising the typesystem, reading part of the pch. I do not see this behaviour. Can you check if root 6.08 features the same runtime performance? Cheers, Danilo

Hi, Right - but this is the dynamic loader, so that’s really only about symbols. We have been trying to hide the clang + llvm symbols as much as possible; I cannot remember whether that’s the case for v6.04, though. So indeed, as Danilo suggested, it would be great to know if an install of v6.08 s…

[quote=“dpiparo”]Hi, we do quite many things during the time accounted to the load of libCore, e.g. reading rootmaps, initialising the typesystem, reading part of the pch. I do not see this behaviour. Can you check if root 6.08 features the same runtime performance? Cheers, Danilo[/quote] Hi Da…

Hi, I just realized: this is likely caused by static initialization. Which in turn might be the interpreter initialization and that might be triggering file lookups. Something else we saw in the past was broken resolvers (DNS) that caused enormous delays. We need to resolve the hostname to initia…

I just thought it might be useful to know, it was the DNS fault. My home router arbitrarily appends a strange domain name to all devices connected to it. With wireshark I was able to see that during the loading of libCore a auto-dns probe with the wrong hostname (due to the wrong domain) would resul…

[image] [Linux]ROOT6 very slow startup ROOT I found a solution: sft.its.cern.ch/jira/browse/ROOT-6912 Similar methods to Mac, in /etc/hosts I’ve added a line 127.0.0.1 $HOSTNAME Everything is now working in good speed. [code]SJL@Gyro:~> time root -l -q; time root -…

Should be fixed in the master. Could someone confirm?

Slow loading of libCore.so on OSX El Capitan

ROOT

Wile_E_Coyote April 20, 2017, 1:52pm 7

Root slow to start on Mac OS