fix(test): avoid running ssh after exhausting memory

In test_balloon.py::test_deflate_on_oom we are exhausting the memory of the microVM trying to trigger the OOM killer. This commit removes SSH commands after launching the memory hogger inside the microVM, to avoid hang connections due to the OOM killer killing sshd. Signed-off-by: Babis Chalios <[email protected]>
firecracker-microvm · Oct 6, 2023 · bfd8d26 · bfd8d26
1 parent fef6111
commit bfd8d26
Showing 1 changed file with 1 addition and 9 deletions.
diff --git a/tests/integration_tests/functional/test_balloon.py b/tests/integration_tests/functional/test_balloon.py
@@ -73,15 +73,7 @@ def make_guest_dirty_memory(ssh_connection, amount_mib=32):
         logger.error("stdout: %s", stdout)
         logger.error("stderr: %s", stderr)
 
-    cmd = "cat /tmp/fillmem_output.txt"
-    tries = 3
-    while tries > 0:
-        # it may take a bit of time to dirty the memory and the OOM to kick-in
-        time.sleep(0.5)
-        _, stdout, _ = ssh_connection.run(cmd)
-        if stdout != "":
-            break
-        tries -= 1
+    time.sleep(5)
 
 
 def _test_rss_memory_lower(test_microvm, stable_delta=1):