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-rw-r--r--malloc/malloc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c
index 7ad26af069..02f659708d 100644
--- a/malloc/malloc.c
+++ b/malloc/malloc.c
@@ -1427,12 +1427,12 @@ int      __posix_memalign(void **, size_t, size_t);
 #ifndef DEFAULT_MMAP_THRESHOLD_MAX
   /* For 32-bit platforms we cannot increase the maximum mmap
      threshold much because it is also the minimum value for the
-     maximum heap size and its alignment.  Going above 1MB wastes too
-     much address space.  */
+     maximum heap size and its alignment.  Going above 512k (i.e., 1M
+     for new heaps) wastes too much address space.  */
 # if __WORDSIZE == 32
-#  define DEFAULT_MMAP_THRESHOLD_MAX (1024 * 1024)
+#  define DEFAULT_MMAP_THRESHOLD_MAX (512 * 1024)
 # else
-#  define DEFAULT_MMAP_THRESHOLD_MAX (8 * 1024 * 1024 * sizeof(long))
+#  define DEFAULT_MMAP_THRESHOLD_MAX (4 * 1024 * 1024 * sizeof(long))
 # endif
 #endif