diff --git a/devstack-vm-gate.sh b/devstack-vm-gate.sh
index 25b54b4d..908fccfc 100755
--- a/devstack-vm-gate.sh
+++ b/devstack-vm-gate.sh
@@ -216,7 +216,7 @@ EOF
         echo "VIRT_DRIVER=fake" >> localrc
         # To make debugging easier, disabled until bug 1218575 is fixed.
         # echo "NUMBER_FAKE_NOVA_COMPUTE=10" >>localrc
-        echo "TEMPEST_LARGE_OPS_NUMBER=100" >>localrc
+        echo "TEMPEST_LARGE_OPS_NUMBER=50" >>localrc
     fi
 
     if [ "$DEVSTACK_GATE_CONFIGDRIVE" -eq "1" ]; then