dds - OpenDDS - xorg or compiz runs out of memory on Ubuntu 16.04.1 when running 50+ publisher and subscriber -

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i'm exercising opendds understand behavior. have vmware workstation ubuntu 16.04.1 (8gb ram , 30gb hard disk). run opendds examples opendds-3.11/examples/dcps/introductiontoopendds described in aaa_readme.txt, many instances of publisher , subscriber.

so have created simple script publisher , subscriber start process every few seconds below,

pub.sh

for value in {1..250} ; ./publisher -dcpsconfigfile dds_tcp_conf.ini & sleep 30 done

sub.sh

for value in {1..150} ; ./subscriber -dcpsconfigfile dds_tcp_conf.ini & sleep 30 done here publisher publishes 2 topics. first started dcpsinforepo followed sub.sh , pub.sh respectively. observed xorg or compiz runs out of memory after 50th instances of either publisher or subscriber started.

i tried rtps observed same.

can me understand why it's eating lot of memory while running many instances?





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