e2e: update topology-aware test for burstable placement.

Update existing burstable placement test for altered behavior.
Add new test to verify CPU limit based burstable placement of
limited and unlimited burstable containers.

Signed-off-by: Krisztian Litkey <[email protected]>

Author: klihub

test/e2e/files/burstable.yaml.in

@@ -31,7 +31,9 @@ spec:
         cpu: ${CPUREQ}
         memory: ${MEMREQ}
       limits:
+        $( ( [ -n "$CPULIM" ] && [ "$CPULIM" != "0" ] ) && echo "
         cpu: ${CPULIM}
+        ")
         $( ( [ -n "$MEMLIM" ] && [ "$MEMLIM" != "0" ] ) && echo "
         memory: ${MEMLIM}
         ")

test/e2e/policies.test-suite/topology-aware/n4c16/test00-basic-placement/code.var.sh

@@ -54,7 +54,7 @@ vm-command "kubectl delete pods --all --now"
 
 # pod2: Test that 4 burstable containers not eligible for isolated/exclusive CPU allocation
 # gets evenly spread over NUMA nodes.
-CONTCOUNT=4 CPUREQ=2 CPULIM=4 create burstable
+CONTCOUNT=4 CPUREQ=2 CPULIM=2002m create burstable
 report allowed
 verify \
     'disjoint_sets(cpus["pod2c0"], cpus["pod2c1"], cpus["pod2c2"], cpus["pod2c3"])' \

test/e2e/policies.test-suite/topology-aware/n4c16/test14-burstable/code.var.sh

@@ -24,4 +24,27 @@ verify \
     'len(nodes["pod2c0"]) == 2' \
     'len(nodes["pod3c0"]) == 4'
 
+vm-command "kubectl delete pods --all --now"
+
+helm-terminate
+helm_config=$(COLOCATE_PODS=false instantiate helm-config.yaml) helm-launch topology-aware
+
+# Limited burstable containers get assigned to the lowest pool where
+# there is enough free capacity for their limit. In this case, a socket.
+CONTCOUNT=2 CPUREQ=2 CPULIM=5 MEMREQ=100M create burstable
+report allowed
+verify \
+    'nodes["pod4c0"] == { "node2" ,"node3" }' \
+    'nodes["pod4c1"] == { "node0", "node1" }'
+
+# Unlimited burstable containers get allocated to the root pool unless
+# affinity dictates otherwise.
+CONTCOUNT=2 CPUREQ=2 CPULIM=0 MEMREQ=100M create burstable
+report allowed
+verify \
+    'nodes["pod5c0"] == { "node0", "node1", "node2", "node3" }' \
+    'nodes["pod5c1"] == { "node0", "node1", "node2", "node3" }'
+
+vm-command "kubectl delete pods --all --now"
+
 helm-terminate