[heap] Fix remaining test failures with MemoryBalancer

There were a few test failures left when running with MemoryBalancer, that were actually not caused by bugs in MemoryBalancer but broke tests because of slightly different behavior. * major_allocation_duration can be 0 with back-to-back GCs and the CHECK therefore needed to be adjusted. * Many Wasm API tests were timing out because the test was trying to drain the task queue but MemoryBalancer was scheduling its heartbeat task. The test-specific task runner simply schedules delayed tasks immediately which causes this. For now we simply disable those tests with --memory-balancer enabled. Bug: v8:13842 Change-Id: I4cba6755432fabb701c88b2ea6d4d0637a786490 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/4827603 Commit-Queue: Dominik Inführ <dinfuehr@chromium.org> Reviewed-by: Michael Lippautz <mlippautz@chromium.org> Cr-Commit-Position: refs/heads/main@{#89904}
v8 · Sep 11, 2023 · 2856d48 · 2856d48
1 parent 88fd903
commit 2856d48
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Showing 8 changed files with 15 additions and 9 deletions.
diff --git a/src/heap/gc-tracer.cc b/src/heap/gc-tracer.cc
@@ -417,7 +417,7 @@ void GCTracer::NotifyMemoryBalancer() {
   const base::TimeDelta major_allocation_duration =
       (current_.end_atomic_pause_time - previous_mark_compact_end_time_) -
       blocked_time_taken;
-  CHECK_GT(major_allocation_duration, base::TimeDelta());
+  CHECK_GE(major_allocation_duration, base::TimeDelta());
 
   heap_->mb_->UpdateGCSpeed(major_gc_bytes, major_gc_duration);
 

diff --git a/src/heap/memory-balancer.cc b/src/heap/memory-balancer.cc
@@ -24,7 +24,8 @@ void MemoryBalancer::RecomputeLimits(size_t embedder_allocation_limit,
 }
 
 void MemoryBalancer::RefreshLimit() {
-  DCHECK(major_allocation_rate_ && major_gc_speed_);
+  CHECK(major_allocation_rate_.has_value());
+  CHECK(major_gc_speed_.has_value());
   const size_t computed_limit =
       live_memory_after_gc_ +
       sqrt(live_memory_after_gc_ * (major_allocation_rate_.value().rate()) /

diff --git a/test/cctest/cctest.status b/test/cctest/cctest.status
@@ -1056,8 +1056,8 @@
   # and these tests don't make sense.
   # TODO(14108): Remove once we remove '--no-liftoff' from the 'turboshaft'
   # variant.
-  'test-streaming-compilation/AsyncTestIncrementalCaching': [FAIL],
-  'test-streaming-compilation/SingleThreadedTestIncrementalCaching': [FAIL],
+  'test-streaming-compilation/AsyncTestIncrementalCaching': [SKIP],
+  'test-streaming-compilation/SingleThreadedTestIncrementalCaching': [SKIP],
 
   # Revectorization is not supported yet in Turboshaft.
   # TODO(14108): Remove once supported.

diff --git a/test/cctest/heap/test-heap.cc b/test/cctest/heap/test-heap.cc
@@ -6405,7 +6405,7 @@ HEAP_TEST(Regress670675) {
   }
   size_t array_length = 128 * KB;
   size_t n = heap->OldGenerationSpaceAvailable() / array_length;
-  for (size_t i = 0; i < n + 40; i++) {
+  for (size_t i = 0; i < n + 60; i++) {
     {
       HandleScope inner_scope(isolate);
       isolate->factory()->NewFixedArray(static_cast<int>(array_length),

diff --git a/test/cctest/heap/test-incremental-marking.cc b/test/cctest/heap/test-incremental-marking.cc
@@ -125,8 +125,8 @@ TEST_WITH_PLATFORM(IncrementalMarkingUsingTasks, MockPlatform) {
       marking->Start(GarbageCollector::MARK_COMPACTOR,
                      i::GarbageCollectionReason::kTesting);
     }
-    CHECK(platform.PendingTask());
-    while (platform.PendingTask()) {
+    CHECK(marking->IsMajorMarking());
+    while (marking->IsMajorMarking()) {
       platform.PerformTask();
     }
     CHECK(marking->IsStopped());

diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
@@ -4332,9 +4332,9 @@ TEST(TwoPassPhantomCallbacksTriggeredByStringAlloc) {
   CHECK_EQ(metadata.instance_counter, 1);
 
   v8::base::ScopedVector<uint8_t> source(200000);
-  v8::HandleScope handle_scope(isolate);
   // Creating a few large strings suffices to trigger GC.
   while (metadata.instance_counter == 1) {
+    v8::HandleScope handle_scope(isolate);
     USE(v8::String::NewFromOneByte(isolate, source.begin(),
                                    v8::NewStringType::kNormal,
                                    static_cast<int>(source.size())));

diff --git a/test/cctest/wasm/test-streaming-compilation.cc b/test/cctest/wasm/test-streaming-compilation.cc
@@ -266,9 +266,13 @@ class StreamTester {
 
 #define STREAM_TEST(name)                                                  \
   void RunStream_##name(MockPlatform*, v8::Isolate*);                      \
-  TEST_WITH_PLATFORM(Async##name, MockPlatform) { RUN_STREAM(name); }      \
+  TEST_WITH_PLATFORM(Async##name, MockPlatform) {                          \
+    if (i::v8_flags.memory_balancer) return;                               \
+    RUN_STREAM(name);                                                      \
+  }                                                                        \
                                                                            \
   TEST_WITH_PLATFORM(SingleThreaded##name, MockPlatform) {                 \
+    if (i::v8_flags.memory_balancer) return;                               \
     i::FlagScope<bool> single_threaded_scope(&i::v8_flags.single_threaded, \
                                              true);                        \
     RUN_STREAM(name);                                                      \

diff --git a/test/cctest/wasm/test-wasm-metrics.cc b/test/cctest/wasm/test-wasm-metrics.cc
@@ -262,6 +262,7 @@ class MetricsRecorder : public v8::metrics::Recorder {
 };
 
 COMPILE_TEST(TestEventMetrics) {
+  if (v8_flags.memory_balancer) return;
   FlagScope<bool> no_wasm_dynamic_tiering(&v8_flags.wasm_dynamic_tiering,
                                           false);
   std::shared_ptr<MetricsRecorder> recorder =