Optimization of malloc usage for small chunks.
Reduces memory fragmentation.

diff --git a/configure.in b/configure.in
index b01cae7..040c9ba 100644
--- a/configure.in
+++ b/configure.in
@@ -354,6 +354,7 @@ fi
 
 AC_CHECK_FUNCS(getgrouplist)
 AC_CHECK_FUNCS(asprintf)
+AC_CHECK_FUNCS(mallopt)
 
 # DocBook Documentation
 
diff --git a/hald/hald.c b/hald/hald.c
index 4e3c8da..d946c4e 100644
--- a/hald/hald.c
+++ b/hald/hald.c
@@ -41,7 +41,9 @@
 #include <signal.h>
 #include <grp.h>
 #include <syslog.h>
-
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <malloc.h>
 #include <dbus/dbus.h>
 #include <dbus/dbus-glib.h>
 #include <dbus/dbus-glib-lowlevel.h>
@@ -374,6 +376,19 @@ main (int argc, char *argv[])
 
 	openlog ("hald", LOG_PID, LOG_DAEMON);
 
+#ifdef HAVE_MALLOPT
+
+#define HAL_MMAP_THRESHOLD 100
+#define HAL_TRIM_THRESHOLD 100
+
+	/* We use memory in small chunks, thus optimize
+	   it this way.
+	 */
+	mallopt(M_MMAP_THRESHOLD, HAL_MMAP_THRESHOLD);
+	mallopt(M_TRIM_THRESHOLD, HAL_TRIM_THRESHOLD);
+
+#endif
+
 #ifdef HALD_MEMLEAK_DBG
 	/*g_mem_set_vtable (glib_mem_profiler_table);*/
 #endif