src/share/vm/gc/g1/heapRegion.cpp

*** 141,150 ****
--- 141,151 ----
  
    guarantee(GrainBytes == 0, "we should only set it once");
    // The cast to int is safe, given that we've bounded region_size by
    // MIN_REGION_SIZE and MAX_REGION_SIZE.
    GrainBytes = region_size;
+   log_info(gc, heap)("Heap region size: " SIZE_FORMAT "M", GrainBytes / M);
  
    guarantee(GrainWords == 0, "we should only set it once");
    GrainWords = GrainBytes >> LogHeapWordSize;
    guarantee((size_t) 1 << LogOfHRGrainWords == GrainWords, "sanity");