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Limit maximum number of open file descriptors to overcome titan bug

Without this, titan tries to allocate too much memory and triggers OOM
under some systems (happening here with 16GB of RAM).

Related: https://gitlab.eclipse.org/eclipse/titan/titan.core/-/issues/690
Change-Id: Iafa8cfa769386e63e1d879d8cce6e24b244d9a6f
---
M start-testsuite.sh
1 file changed, 17 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/44/31944/1

diff --git a/start-testsuite.sh b/start-testsuite.sh
index a1e753d..4b88501 100755
--- a/start-testsuite.sh
+++ b/start-testsuite.sh
@@ -45,6 +45,10 @@
 #TITAN_LIBRARY_PATH="$TTCN3_DIR/lib"
 #TTCN3_BIN_DIR="$TTCN3_DIR/bin"
 
+# Limit max num of open file descriptors to workaround titan.core bug:
+# https://gitlab.eclipse.org/eclipse/titan/titan.core/-/issues/690
+ulimit -n 100000
+
 # below is for the debian packages
 TTCN3_BIN_DIR="${TTCN3_BIN_DIR:-/usr/bin}"
 TITAN_LIBRARY_PATH="${TITAN_LIBRARY_PATH:-/usr/lib/titan:/usr/ttcn3/lib}"

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