System allocation size now defaults to 32MB to avoid temporarily multiple system calls requesting memory

DefineOptions.cmake

@@ -69,7 +69,7 @@ endif (LEON3)
 
 if (LINUXTEST)
   set(WITH_SYSTEM_CALLS "mmap")
-  set(SYS_ALLOC_SIZE 4096)
+  set(SYS_ALLOC_SIZE 32000000)
   set(SORT_POLICY "fifo")
   set(SEARCH_POLICY "first")
   set(FIT_PERCENTAGE 0.6f)