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Rather, expert-users may use\nthe new feature by moving the initialization of the search paths to say\nsoftware environment loading.\n\nIn ALICE, we do something like\n\n```\nexport ROOT_LDSYSPATH=$(LD_DEBUG=libs LD_PRELOAD=DOESNOTEXIST ls /tmp/DOESNOTEXIST 2>&1 | grep -m 1 \"system search path\" | sed 's/.*=//g' | awk '//{print $1}')\n\nexport ROOT_CPPSYSINCL=$(LC_ALL=C c++ -xc++ -E -v /dev/null 2>&1 | sed -n '/^.include/,${/^ \\/.*++/{p}}' | tr '\\n' ':' | tr ' ' ':')\n```\n\nspeeding up the initialization of our executables at runtime and doing\nless syscalls that create short-lived processes, for instance calling the compiler.\n\nThe effect from this operation can be seen by counting the `execve` syscalls\nin a small example:\n\n```\nstrace -e execve -f root.exe -q -e \"double x=1;\"  # ---> 14 calls\n\nexport ROOT_LDSYSPATH=...\nexport ROOT_CPPSYSINCL=...\nstrace -e execve -f root.exe -q -e \"double x=1;\"  # ---> 6 calls\n```\n\nThis gain can accumulate to significant savings when used in a multi-process environment\nsuch as ALICE is using.","shortMessageHtmlLink":"Option to reduce startup syscalls via environment caching"}},{"before":"54e0863774cebc352ab243dfb4ab9dbfc3bbb2bf","after":"7fc6e36e2f225cb5bb49a97b6d993004dd7461db","ref":"refs/heads/alice/v6-32-00","pushedAt":"2024-06-13T09:56:08.000Z","pushType":"push","commitsCount":1,"pusher":{"login":"ktf","name":"Giulio Eulisse","path":"/ktf","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/10544?s=80&v=4"},"commit":{"message":"[math] Use correct type when invoking the GSLIntegrator\n\nplugin, otherwise heavy checks in the PluginHandler take place that\nperform interpreter lookups.\n\nFixes #15579","shortMessageHtmlLink":"[math] Use correct type when invoking the GSLIntegrator"}},{"before":"4a6a7eaee8aaf7a903953d87a2d257eebba47ee4","after":"54e0863774cebc352ab243dfb4ab9dbfc3bbb2bf","ref":"refs/heads/alice/v6-32-00","pushedAt":"2024-06-13T09:44:03.000Z","pushType":"push","commitsCount":1,"pusher":{"login":"ktf","name":"Giulio Eulisse","path":"/ktf","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/10544?s=80&v=4"},"commit":{"message":"Option to reduce startup syscalls via environment caching\n\nThis commit provides the possibility to pass system library search\npaths as well as some compiler include paths to ROOT as environment\nvariables.\nThis has the advantage that ROOT will spawn less sub-processes\nand we can do the setup only once, instead of doing it for every\nsingle executable that is linked to ROOT.\n\nThe commit does not change any default behaviour! 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