diff --git a/libs/console/piterminal.cpp b/libs/console/piterminal.cpp
index 452c473b..623e09be 100644
--- a/libs/console/piterminal.cpp
+++ b/libs/console/piterminal.cpp
@@ -817,7 +817,7 @@ bool PITerminal::initialize() {
 		memcpy(argv[0], shell.data(), shell.size());
 		argv[0][shell.size()] = 0;
 		argv[1] = 0;
-		execvp(shell.data(), argv);
+		execvp(argv[0], argv);
 		delete[] argv[0];
 		delete[] argv;
 		exit(0);
diff --git a/libs/main/system/piprocess.cpp b/libs/main/system/piprocess.cpp
index d4d2e621..6faf7b5e 100644
--- a/libs/main/system/piprocess.cpp
+++ b/libs/main/system/piprocess.cpp
@@ -202,7 +202,7 @@ void PIProcess::startProc(bool detached) {
 #else
 
 		//cout << "exec " << tf_in << ", " << tf_out << ", " << tf_err << endl;
-		if (execve(str.data(), argscc, envcc) < 0)
+		if (execve(str.data(), (char * const *)argscc, (char * const *)envcc) < 0)
 			piCoutObj << "\"execve" << str << args << "\" error :" << errorString();
 	} else {
 		piMinSleep;
diff --git a/main.cpp b/main.cpp
index a247a89b..f6d084b6 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,89 +1,114 @@
 #include "pip.h"
 
-REGISTER_VARIANT_TYPEINFO(PIVector<double>)
+static const char * smallstr = "abcdef";
 
-PIEthernet eth;
-
-class OH: public PIObject {
-	PIOBJECT(OH)
-public:
-	EVENT_HANDLER0(void, eh0) {
-		piCout << "eh0";
-	}
-	EVENT_HANDLER1(void, eh1, PIStringList, sl) {
-		piCout << "eh1" << sl;
-	}
-	EVENT_HANDLER2(void, eh2, PIStringList, sl, const  PIVector< double > &, vd) {
-		piCout << "eh2" << sl << vd;
-	}
-	EVENT_HANDLER3(void, eh3, PIStringList, sl, const  PIVector<double>   &, vd, PISystemTime, st) {
-		piCout << "eh3" << sl << vd << st;
-	}
-private:
-	int cnt = 0;
-};
-
-class OE: public PIThread {
-	PIOBJECT_SUBCLASS(OE, PIThread)
-public:
-	EVENT0(e0);
-	EVENT1(e1, PIStringList, sl);
-	EVENT2(e2, PIStringList, sl, PIVector< double>, vd);
-	EVENT3(e3, PIStringList, sl, PIVector< double>, vd, PISystemTime, st);
-private:
-};
-
-PIThreadNotifier notifier;
-PITimeMeasurer time;
-
-class Worker: public PIThread {
-	PIOBJECT_SUBCLASS(Worker, PIThread)
-public:
-	Worker(const PIString & n) {
-		setName(n);
-	}
-	void run() override {
-		piCoutObj << (int)time.elapsed_m() << "wait ...";
-		notifier.wait();
-		piCoutObj << (int)time.elapsed_m() << "done";
-	};
-};
+static const char * bigstr = "zsxdcgfhvbncjdbasljcvavcjadnwnxudvbabdhjlavudvdaljsvclavjlasdhvcjhldsavhjldasvfjlhsavdjhavdjhvfjhldasvfjlasvfhjldasvfhjasvfdjdasfhvjldasvhfjlasvfhjlahsvdfhjfvfvdjalsvfjlhasdvfdjsalvfhhjldasvfdjhaldsvfhjdvsfjhlavfjhlavfladlsvfjlasdvfdhjlavfhjldasvfhjlavfhjldvfhjlalsdvfjlhvasfhjlvchjlavchjladvchjldladvschjlladscvjlhdcahjchjllcahjllvcdjladsvhldbcljadsbcjdhlsachjlvdsa hjlcldajc hljdascbhaldb cldhashd l cajlhs chdsbfhlbfdasdffadsfjkbfkjldsabflhbcldhsbhclabchljadsbchldahsbcladsbhclhabhasbclasbdhl";
 
 
 int main(int argc, char * argv[]) {
-	typedef int(*MyFunc)(int,int);
-	PILibrary * lib = new PILibrary();
-	if (lib->load("libpip_plugin.dll")) {
-		MyFunc fadd = (MyFunc)lib->resolve("exportedSum");
-		MyFunc fmul = (MyFunc)lib->resolve("exportedMul");
-		if (fadd) {
-			int sum = fadd(1, 2);
-			piCout << "sum =" << sum;
-		} else {
-			piCout << "Can`t resolve" << "exportedSum";
-		}
-		if (fmul) {
-			int mul = fadd(10, 20);
-			piCout << "mul =" << mul;
-		} else {
-			piCout << "Can`t resolve" << "exportedMul";
-		}
-	} else {
-		piCout << lib->lastError();
+	static const int cc = 1000000;
+	PITimeMeasurer tm;
+	int l = 0;
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s(smallstr);
+		l = s.size();
 	}
-	delete lib;
-	/*OH oh;
-	OE oe;
-	CONNECTU(&oe, e3, &oh, eh0);
-	CONNECTU(&oe, e3, &oh, eh1);
-	CONNECTU(&oe, e3, &oh, eh2);
-	CONNECTU(&oe, e3, &oh, eh3);
-	//oh.dump();
-	oe.dump();
-	oe.e0();
-	oe.e1({"a", "b", "c"});
-	oe.e2({"a", "b", "c"}, {1., 1.5, 2.});
-	oe.e3({"a", "b", "c"}, {1., 1.5, 2.}, PISystemTime::current());
-	//piCout << oe.methodsEH();*/
+	piCout << l << "PIString()" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = smallstr;
+		l = s.size();
+	}
+	piCout << l << "PIString =" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIStringAscii(smallstr);
+		l = s.size();
+	}
+	piCout << l << "PIStringAscii" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s;
+		s += smallstr;
+		s += "1";
+		l = s.size();
+	}
+	piCout << l << "PIString + PIString" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIStringAscii(smallstr) + "1";
+		l = s.size();
+	}
+	piCout << l << "PIStringAscii + PIString" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromUTF8(smallstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromUTF8" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromSystem(smallstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromSystem" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromAscii(smallstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromAscii" << tm.elapsed_m();
+
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s(bigstr);
+		l = s.size();
+	}
+	piCout << l << "PIString()" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = bigstr;
+		l = s.size();
+	}
+	piCout << l << "PIString =" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIStringAscii(bigstr);
+		l = s.size();
+	}
+	piCout << l << "PIStringAscii" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s;
+		s += bigstr;
+		s += "1";
+		l = s.size();
+	}
+	piCout << l << "PIString + PIString" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIStringAscii(bigstr) + "1";
+		l = s.size();
+	}
+	piCout << l << "PIStringAscii + PIString" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromUTF8(bigstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromUTF8" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromSystem(bigstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromSystem" << tm.elapsed_m();
+	tm.reset();
+	for(int i=0; i<cc; ++i) {
+		PIString s = PIString::fromAscii(bigstr);
+		l = s.size();
+	}
+	piCout << l << "PIString::fromAscii" << tm.elapsed_m();
 	return 0;
 }