diff --git a/stress/proxy/start.sh b/stress/proxy/start.sh
index f185cf0b..e0e21db6 100644
--- a/stress/proxy/start.sh
+++ b/stress/proxy/start.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-PROXY_COUNT=10
+PROXY_COUNT=20
 PROXY_PROTOCOL=tcp
 
 #####################################################
diff --git a/stress/publish/start.sh b/stress/publish/start.sh
index c4179ebc..f34e5178 100644
--- a/stress/publish/start.sh
+++ b/stress/publish/start.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-PUBLISHER_COUNT=10
+PUBLISHER_COUNT=20
 PUBLISHER_PROTOCOL=tcp
 
 #####################################################
diff --git a/stress/read/start.sh b/stress/read/start.sh
index 76dae56b..35930b87 100644
--- a/stress/read/start.sh
+++ b/stress/read/start.sh
@@ -1,6 +1,6 @@
 #!/bin/sh -e
 
-READER_COUNT=10
+READER_COUNT=20
 READER_PROTOCOL=tcp
 
 #####################################################