Ubuntu terminal shutdown when running load tests

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http://stackoverflow.com – Facing a peculiar problem when doing load testing on my laptop with 2000 comcurrent users using cometd. Following all steps in http://cometd.org/documentation/2.x/howtos/loadtesting. These tests run fine for about 1000 concurrent client. But when i increase the load to about 2000 CCUs, the terminal just shuts down. Any idea what's happening here? BTW, i have followed all the OS level settings as per the site. i.e. ulimit -n 65536 ifconfig eth0 txqueuelen 8192 # replace eth0 with the ethernet interface you are using /sbin/sysctl -w net.core.somaxconn=4096 /sbin/sysctl -w net.core.netdev_m (HowTos)