1 files changed, 11 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/scheduler/main_thread/memory_purge_manager.cc b/chromium/third_party/blink/renderer/platform/scheduler/main_thread/memory_purge_manager.cc
index 811cc0cb55f..07afb6e13a7 100644
--- a/chromium/third_party/blink/renderer/platform/scheduler/main_thread/memory_purge_manager.cc
+++ b/chromium/third_party/blink/renderer/platform/scheduler/main_thread/memory_purge_manager.cc
@@ -76,6 +76,10 @@ void MemoryPurgeManager::OnPageDestroyed(PageLifecycleState state) {
   total_page_count_--;
   if (state == PageLifecycleState::kFrozen)
     frozen_page_count_--;
+
+  if (!CanPurge())
+    purge_timer_.Stop();
+
   DCHECK_LE(frozen_page_count_, total_page_count_);
 }
 
@@ -110,6 +114,10 @@ void MemoryPurgeManager::OnRendererBackgrounded() {
   if (!base::FeatureList::IsEnabled(
           features::kPurgeRendererMemoryWhenBackgrounded))
     return;
+  // A spare renderer has no pages. We would like to avoid purging memory
+  // on a spare renderer.
+  if (total_page_count_ == 0)
+    return;
 
   backgrounded_purge_pending_ = true;
   RequestMemoryPurgeWithDelay(GetTimeToPurgeAfterBackgrounded());
@@ -145,6 +153,9 @@ void MemoryPurgeManager::PerformMemoryPurge() {
 }
 
 bool MemoryPurgeManager::CanPurge() const {
+  if (total_page_count_ == 0)
+    return false;
+
   if (backgrounded_purge_pending_)
     return true;