increased shared memory size

benchmarker.py

@@ -280,7 +280,7 @@ class Benchmarker:
       sudo -s ulimit -n 8192
       sudo sysctl net.ipv4.tcp_tw_reuse=1
       sudo sysctl net.ipv4.tcp_tw_recycle=1
-      sudo sysctl -w kernel.shmmax=134217728
+      sudo sysctl -w kernel.shmmax=2147483648
       sudo sysctl -w kernel.shmall=2097152
     """)
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