PPC: perf enhancement: Use larger heap page size on PPC.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 2bfdeabd42cd606a40e8242d120465dc0414a0ab..412e963b60d349c8c478e4e91ba157f5318ebb63 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -17210,10 +17210,12 @@ class InitDefaultIsolateThread : public v8::base::Thread {
   void Run() {
     v8::Isolate::CreateParams create_params;
     create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
+    const intptr_t pageSizeMult =
+        v8::internal::Page::kPageSize / v8::internal::MB;
     switch (testCase_) {
       case SetResourceConstraints: {
-        create_params.constraints.set_max_semi_space_size(1);
-        create_params.constraints.set_max_old_space_size(4);
+        create_params.constraints.set_max_semi_space_size(1 * pageSizeMult);
+        create_params.constraints.set_max_old_space_size(4 * pageSizeMult);
         break;
       }
       default: