diff --git a/util/oslib-posix.c b/util/oslib-posix.c
index 3c14b72665..dc001da66d 100644
--- a/util/oslib-posix.c
+++ b/util/oslib-posix.c
@@ -61,7 +61,7 @@
 #include "qemu/memalign.h"
 #include "qemu/mmap-alloc.h"
 
-#define MAX_MEM_PREALLOC_THREAD_COUNT 16
+#define MAX_MEM_PREALLOC_THREAD_COUNT 32
 
 struct MemsetThread;