diff --git a/main.cpp b/main.cpp
index f6d084b6..38a223b9 100644
--- a/main.cpp
+++ b/main.cpp
@@ -110,5 +110,33 @@ int main(int argc, char * argv[]) {
 		l = s.size();
 	}
 	piCout << l << "PIString::fromAscii" << tm.elapsed_m();
+	PIString is = PIString::fromAscii(bigstr);
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		l = is.toByteArray().size();
+	}
+	piCout << l << "PIString::toByteArray" << tm.elapsed_m();
+	PIByteArray ba = is.toByteArray();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromUTF8(ba);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromByteArray" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromNumber(ba.size());
+		l = s.size();
+	}
+	piCout << l << "PIString::fromNumber" << tm.elapsed_m();
+	tm.reset();
+	PIString is2 = PIString::fromUTF8(ba);
+	for(int i=0; i<cc; ++i) {
+		PIString s = is;
+		l = s.size();
+		s = is2;
+		l += s.size();
+	}
+	piCout << l << "PIString::assign non empty" << tm.elapsed_m();
 	return 0;
 }