diff --git a/.gitignore b/.gitignore
index e600555c46..affe663c4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,4 @@ memcached_dtrace.h
 memcached-*.tar.gz
 doc/protocol-binary-range.txt
 doc/protocol-binary.txt
+/sizes
diff --git a/Makefile.am b/Makefile.am
index 79e960d44a..ab4c26c864 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-bin_PROGRAMS = memcached memcached-debug
+bin_PROGRAMS = memcached memcached-debug sizes
 pkginclude_HEADERS = protocol_binary.h
 
 BUILT_SOURCES=
@@ -58,7 +58,8 @@ EXTRA_DIST = doc scripts TODO t memcached.spec memcached_dtrace.d
 
 MOSTLYCLEANFILES = *.gcov *.gcno *.gcda *.tcov
 
-test:	memcached-debug
+test:	memcached-debug sizes
+	$(srcdir)/sizes
 	prove $(srcdir)/t
 	@if test `basename $(PROFILER)` = "gcov"; then \
 	  for file in memcached_debug-*.gc??; do \
diff --git a/sizes.c b/sizes.c
new file mode 100644
index 0000000000..95a644cac3
--- /dev/null
+++ b/sizes.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+
+#include "memcached.h"
+
+static void display(const char *name, size_t size) {
+    printf("%s\t%d\n", name, (int)size);
+}
+
+int main(int argc, char **argv) {
+
+    display("Slab Stats", sizeof(struct slab_stats));
+    display("Thread stats",
+            sizeof(struct thread_stats)
+            - (200 * sizeof(struct slab_stats)));
+    display("Global stats", sizeof(struct stats));
+    display("Settings", sizeof(struct settings));
+    display("Item (no cas)", sizeof(item));
+    display("Item (cas)", sizeof(item) + sizeof(uint64_t));
+    display("Libevent thread",
+            sizeof(LIBEVENT_THREAD) - sizeof(struct thread_stats));
+    display("Connection", sizeof(conn));
+
+    printf("----------------------------------------\n");
+
+    display("libevent thread cumulative", sizeof(LIBEVENT_THREAD));
+    display("Thread stats cumulative\t", sizeof(struct thread_stats));
+
+    return 0;
+}