--- a/src/hotspot/os/aix/os_aix.cpp	Sat May 05 18:55:31 2018 +0200
+++ b/src/hotspot/os/aix/os_aix.cpp	Thu May 03 17:10:39 2018 +0200
@@ -1459,6 +1459,7 @@
   const char* const aixthread_guardpages = ::getenv("AIXTHREAD_GUARDPAGES");
   st->print_cr("  AIXTHREAD_GUARDPAGES=%s.",
       aixthread_guardpages ? aixthread_guardpages : "<unset>");
+  st->cr();
 
   os::Aix::meminfo_t mi;
   if (os::Aix::get_meminfo(&mi)) {
@@ -1481,6 +1482,16 @@
   }
   st->cr();
 
+  // Print program break.
+  st->print_cr("Program break at VM startup: " PTR_FORMAT ".", p2i(g_brk_at_startup));
+  address brk_now = (address)::sbrk(0);
+  if (brk_now != (address)-1) {
+    st->print_cr("Program break now          : " PTR_FORMAT " (distance: " SIZE_FORMAT "k).",
+                 p2i(brk_now), (size_t)((brk_now - g_brk_at_startup) / K));
+  }
+  st->print_cr("MaxExpectedDataSegmentSize    : " SIZE_FORMAT "k.", MaxExpectedDataSegmentSize / K);
+  st->cr();
+
   // Print segments allocated with os::reserve_memory.
   st->print_cr("internal virtual memory regions used by vm:");
   vmembk_print_on(st);