tor-browser

commit e0622dafb37d86517fa6100db9cfb7fffa303903
parent 6c2362da93eca9a347b03737e5a463ad2ecc8053
Author: Florian Quèze <florian@queze.net>
Date:   Wed, 22 Oct 2025 19:09:24 +0000

Bug 1995627 - optimize xpcshell test parallel execution by avoiding long-running tests at the end, r=jmaher.

Differential Revision: https://phabricator.services.mozilla.com/D269624

Diffstat:
M
testing/xpcshell/runxpcshelltests.py
 | 
11
+++++++++++

1 file changed, 11 insertions(+), 0 deletions(-)
diff --git a/testing/xpcshell/runxpcshelltests.py b/testing/xpcshell/runxpcshelltests.py
@@ -2282,6 +2282,17 @@ class XPCShellTests:
                     else:
                         tests_queue.append(test)
 
+            # Sort parallel tests by timeout factor (descending) to start slower tests first
+            # This helps optimize parallel execution by avoiding long-running tests at the end
+            if tests_queue:
+                tests_queue = deque(
+                    sorted(
+                        tests_queue,
+                        key=lambda t: int(t.test_object.get("requesttimeoutfactor", 1)),
+                        reverse=True,
+                    )
+                )
+
             status = self.runTestList(
                 tests_queue, sequential_tests, testClass, mobileArgs, **kwargs
             )