diff --git a/libs/console/piterminal.cpp b/libs/console/piterminal.cpp
index fbf1b718..795d9af3 100644
--- a/libs/console/piterminal.cpp
+++ b/libs/console/piterminal.cpp
@@ -147,7 +147,8 @@ void PITerminal::write(const PIByteArray & d) {
 	if (PRIVATE->fd == 0) return;
 	// ssize_t wrote = 0;
 	// wrote =
-	::write(PRIVATE->fd, d.data(), d.size_s());
+	auto _r = ::write(PRIVATE->fd, d.data(), d.size_s());
+	NO_UNUSED(_r);
 	// piCout << "wrote" << wrote << d;
 #	endif
 #  endif
@@ -345,8 +346,8 @@ void PITerminal::getCursor(int & x, int & y) {
 	int sz = 0;
 	PRIVATE->shm->read(&sz, 4);
 #  else
-	x                   = PRIVATE->cur_x;
-	y                   = PRIVATE->cur_y;
+	x = PRIVATE->cur_x;
+	y = PRIVATE->cur_y;
 #  endif
 }
 
@@ -933,7 +934,7 @@ void PITerminal::destroy() {
 	}
 	if (PRIVATE->pipe != INVALID_HANDLE_VALUE) CloseHandle(PRIVATE->pipe);
 	if (PRIVATE->hConBuf != INVALID_HANDLE_VALUE) CloseHandle(PRIVATE->hConBuf);
-		// piCout << "destroy" << size_y;
+	// piCout << "destroy" << size_y;
 #  else
 #	ifdef HAS_FORKPTY
 	if (PRIVATE->pid != 0) kill(PRIVATE->pid, SIGKILL);
diff --git a/libs/main/core/piwaitevent_p.cpp b/libs/main/core/piwaitevent_p.cpp
index 7526cf53..3dff58bc 100644
--- a/libs/main/core/piwaitevent_p.cpp
+++ b/libs/main/core/piwaitevent_p.cpp
@@ -129,7 +129,8 @@ void PIWaitEvent::interrupt() {
 #ifdef WINDOWS
 	SetEvent(event);
 #else
-	::write(pipe_fd[WriteEnd], "", 1);
+	auto _r = ::write(pipe_fd[WriteEnd], "", 1);
+	NO_UNUSED(_r);
 #endif
 }
 
diff --git a/libs/main/io_devices/pifile.cpp b/libs/main/io_devices/pifile.cpp
index 732b4e8d..879f0ef1 100644
--- a/libs/main/io_devices/pifile.cpp
+++ b/libs/main/io_devices/pifile.cpp
@@ -263,7 +263,8 @@ PIByteArray PIFile::readAll(bool forceRead) {
 	if (s < 0) return a;
 	a.resize(s);
 	seekToBegin();
-	fread(a.data(), 1, s, PRIVATE->fd);
+	auto _r = fread(a.data(), 1, s, PRIVATE->fd);
+	NO_UNUSED(_r);
 	seek(cp);
 	if (s >= 0) a.resize(s);
 	return a;
@@ -517,10 +518,10 @@ PIFile::FileInfo PIFile::fileInfo(const PIString & path) {
 	_stat_struct_ fs;
 	piZeroMemory(fs);
 	_stat_call_(path.data(), &fs);
-	int mode              = fs.st_mode;
-	ret.size              = fs.st_size;
-	ret.id_user           = fs.st_uid;
-	ret.id_group          = fs.st_gid;
+	int mode     = fs.st_mode;
+	ret.size     = fs.st_size;
+	ret.id_user  = fs.st_uid;
+	ret.id_group = fs.st_gid;
 #  ifdef ANDROID
 	ret.time_access       = PIDateTime::fromSystemTime(PISystemTime(fs.st_atime, fs.st_atime_nsec));
 	ret.time_modification = PIDateTime::fromSystemTime(PISystemTime(fs.st_mtime, fs.st_mtime_nsec));
@@ -541,9 +542,9 @@ PIFile::FileInfo PIFile::fileInfo(const PIString & path) {
 #	endif
 #  endif
 #  ifndef MICRO_PIP
-	ret.perm_user         = FileInfo::Permissions((mode & S_IRUSR) == S_IRUSR, (mode & S_IWUSR) == S_IWUSR, (mode & S_IXUSR) == S_IXUSR);
-	ret.perm_group        = FileInfo::Permissions((mode & S_IRGRP) == S_IRGRP, (mode & S_IWGRP) == S_IWGRP, (mode & S_IXGRP) == S_IXGRP);
-	ret.perm_other        = FileInfo::Permissions((mode & S_IROTH) == S_IROTH, (mode & S_IWOTH) == S_IWOTH, (mode & S_IXOTH) == S_IXOTH);
+	ret.perm_user  = FileInfo::Permissions((mode & S_IRUSR) == S_IRUSR, (mode & S_IWUSR) == S_IWUSR, (mode & S_IXUSR) == S_IXUSR);
+	ret.perm_group = FileInfo::Permissions((mode & S_IRGRP) == S_IRGRP, (mode & S_IWGRP) == S_IWGRP, (mode & S_IXGRP) == S_IXGRP);
+	ret.perm_other = FileInfo::Permissions((mode & S_IROTH) == S_IROTH, (mode & S_IWOTH) == S_IWOTH, (mode & S_IXOTH) == S_IXOTH);
 	piZeroMemory(fs);
 	_stat_link_(path.data(), &fs);
 	mode &= ~S_IFLNK;
diff --git a/libs/main/io_devices/pisharedmemory.cpp b/libs/main/io_devices/pisharedmemory.cpp
index 8c2a4aae..a3e9d654 100644
--- a/libs/main/io_devices/pisharedmemory.cpp
+++ b/libs/main/io_devices/pisharedmemory.cpp
@@ -136,7 +136,10 @@ bool PISharedMemory::openDevice() {
 		PRIVATE->owner = true;
 		// piCoutObj << "created" << fd;
 	}
-	if (fd >= 0) ftruncate(fd, dsize);
+	if (fd >= 0) {
+		auto _r = ftruncate(fd, dsize);
+		NO_UNUSED(_r);
+	}
 	PRIVATE->data = mmap(0, dsize, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
 	::close(fd);
 	if (PRIVATE->data == MAP_FAILED) {
diff --git a/libs/main/thread/pithread.cpp b/libs/main/thread/pithread.cpp
index a7445d35..4e03b73a 100644
--- a/libs/main/thread/pithread.cpp
+++ b/libs/main/thread/pithread.cpp
@@ -833,11 +833,11 @@ bool PIThread::waitForFinish(PISystemTime timeout) {
 		}
 		return true;
 	}
-	tmf_.reset();
-	while (tmf_.elapsed() < timeout) {
+	PITimeMeasurer tm;
+	while (tm.elapsed() < timeout) {
 		if (_waitForFinish(PISystemTime::fromMilliseconds(PIP_MIN_MSLEEP))) return true;
 	}
-	return tmf_.elapsed() < timeout;
+	return tm.elapsed() < timeout;
 }
 
 
@@ -848,10 +848,10 @@ bool PIThread::waitForStart(PISystemTime timeout) {
 			piMinSleep();
 		return true;
 	}
-	tms_.reset();
-	while (!running_ && tms_.elapsed() < timeout)
+	PITimeMeasurer tm;
+	while (!running_ && tm.elapsed() < timeout)
 		piMinSleep();
-	return tms_.elapsed() < timeout;
+	return tm.elapsed() < timeout;
 }
 
 
@@ -950,10 +950,10 @@ void PIThread::__thread_func__() {
 		// PICout(PICoutManipulators::DefaultControls) << "thread" << this << "wait" << "...";
 		PIINTROSPECTION_THREAD_WAIT(this);
 		if (delay_.isNotNull()) {
-			tmr_.reset();
+			PITimeMeasurer tm;
 			double sl(0.);
 			while (1) {
-				sl = piMind(delay_.toMilliseconds() - tmr_.elapsed_m(), PIP_MIN_MSLEEP);
+				sl = piMind(delay_.toMilliseconds() - tm.elapsed_m(), PIP_MIN_MSLEEP);
 				if (terminating) break;
 				if (sl <= 0.) break;
 				piMSleep(sl);
diff --git a/libs/main/thread/pithread.h b/libs/main/thread/pithread.h
index 0e29754e..af97009e 100644
--- a/libs/main/thread/pithread.h
+++ b/libs/main/thread/pithread.h
@@ -288,7 +288,6 @@ protected:
 	llong tid_   = -1;
 	void * data_ = nullptr;
 	mutable PIMutex thread_mutex;
-	PITimeMeasurer tmf_, tms_, tmr_;
 	PIThread::Priority priority_ = piNormal;
 	ThreadFunc ret_func          = nullptr;
 	PIThreadNotifier state_notifier;
diff --git a/libs/main/types/pisystemtime.cpp b/libs/main/types/pisystemtime.cpp
index 4cbb1e27..4d218968 100644
--- a/libs/main/types/pisystemtime.cpp
+++ b/libs/main/types/pisystemtime.cpp
@@ -317,6 +317,14 @@ PISystemTime PITimeMeasurer::elapsed() const {
 }
 
 
+PISystemTime PITimeMeasurer::elapsedAndReset() {
+	auto ct  = PISystemTime::current(true);
+	auto ret = ct - t_st;
+	t_st     = ct;
+	return ret;
+}
+
+
 // PISystemTime::Frequency
 
 PISystemTime PISystemTime::Frequency::toSystemTime() const {
diff --git a/libs/main/types/pisystemtime.h b/libs/main/types/pisystemtime.h
index e089b4b5..a68aceec 100644
--- a/libs/main/types/pisystemtime.h
+++ b/libs/main/types/pisystemtime.h
@@ -501,43 +501,24 @@ public:
 	//! \~russian Возвращает в PISystemTime время, прошедшее с последнего вызова \a reset(), либо создания измерителя.
 	PISystemTime elapsed() const;
 
-	double reset_time_n() const { return t_st.toNanoseconds(); }
-	double reset_time_u() const { return t_st.toMicroseconds(); }
-	double reset_time_m() const { return t_st.toMilliseconds(); }
-	double reset_time_s() const { return t_st.toSeconds(); }
+	//! \~\brief
+	//! \~english Returns PISystemTime elapsed from last \a reset() execution or from timer measurer creation and call \a reset().
+	//! \~russian Возвращает в PISystemTime время, прошедшее с последнего вызова \a reset(), либо создания измерителя, и вызывает \a
+	//! reset().
+	PISystemTime elapsedAndReset();
 
 	//! \~\brief
 	//! \~english Returns time mark of last \a reset() execution or timer measurer creation.
 	//! \~russian Возвращает отметку времени последнего вызова \a reset(), либо создания измерителя.
-	PISystemTime reset_time() { return t_st; }
+	PISystemTime reset_time() DEPRECATEDM("use PISystemTime::resetTime()") { return t_st; }
 
 	//! \~\brief
-	//! \~english Returns nanoseconds representation of current system time.
-	//! \~russian Возвращает в наносекундах системное время.
-	static double elapsed_system_n() { return PISystemTime::current(true).toNanoseconds(); }
-
-	//! \~\brief
-	//! \~english Returns microseconds representation of current system time.
-	//! \~russian Возвращает в микросекундах системное время.
-	static double elapsed_system_u() { return PISystemTime::current(true).toMicroseconds(); }
-
-	//! \~\brief
-	//! \~english Returns milliseconds representation of current system time.
-	//! \~russian Возвращает в милисекундах системное время.
-	static double elapsed_system_m() { return PISystemTime::current(true).toMilliseconds(); }
-
-	//! \~\brief
-	//! \~english Returns seconds representation of current system time.
-	//! \~russian Возвращает в секундах системное время.
-	static double elapsed_system_s() { return PISystemTime::current(true).toSeconds(); }
-
-	//! \~\brief
-	//! \~english Returns time mark of current system time.
-	//! \~russian Возвращает системное время.
-	static PISystemTime elapsed_system() { return PISystemTime::current(true); }
+	//! \~english Returns time mark of last \a reset() execution or timer measurer creation.
+	//! \~russian Возвращает отметку времени последнего вызова \a reset(), либо создания измерителя.
+	PISystemTime resetTime() const { return t_st; }
 
 private:
-	PISystemTime t_st, t_cur;
+	PISystemTime t_st;
 };
 
 #endif // PITIME_H
diff --git a/utils/deploy_tool/main.cpp b/utils/deploy_tool/main.cpp
index 72da03aa..1485d3bf 100644
--- a/utils/deploy_tool/main.cpp
+++ b/utils/deploy_tool/main.cpp
@@ -40,7 +40,7 @@ void setCommands() {
 	cmd_copydir    = "cp -rf ";
 	ign_err_suffix = " 2> /dev/null";
 #  ifdef MAC_OS
-	qplatforms     = "cocoa";
+	qplatforms = "cocoa";
 #  else
 	qplatforms = "xcb,wayland";
 #  endif
@@ -381,7 +381,8 @@ void copyWildcard(const PIString & from, const PIString & to) {
 	PIFile::FileInfo fi(from);
 	system(("robocopy \"" + fi.dir() + "\" \"" + to + "\" \"" + fi.name() + "\" /E /NJH /NJS /NP /NDL /NS /NC /NFL 1> NUL").data());
 #else
-	system((cmd_copy + from + " \"" + to + "/\"" + cmd_suffix).data());
+	auto _r = system((cmd_copy + from + " \"" + to + "/\"" + cmd_suffix).data());
+	NO_UNUSED(_r);
 #endif
 }
 
@@ -797,13 +798,14 @@ int main(int argc, char * argv[]) {
 		if (need_cp) {
 			piCout << "copy" << l;
 			if (!fake) {
-				system((cmd_copy + "\"" + l + "\" \"" + out_dir + "\"" + cmd_suffix).data());
+				auto _r = system((cmd_copy + "\"" + l + "\" \"" + out_dir + "\"" + cmd_suffix).data());
 				if (strip.isNotEmpty()) {
 					if (!otool.isEmpty()) // Apple
-						system((strip + " -S \"" + out_dir + fi.name() + "\"").data());
+						_r = system((strip + " -S \"" + out_dir + fi.name() + "\"").data());
 					else
-						system((strip + " --strip-unneeded \"" + out_dir + fi.name() + "\"").data());
+						_r = system((strip + " --strip-unneeded \"" + out_dir + fi.name() + "\"").data());
 				}
+				NO_UNUSED(_r);
 			}
 		}
 	}
@@ -812,7 +814,10 @@ int main(int argc, char * argv[]) {
 		PIString fd = findLib(f);
 		if (!fd.isEmpty()) {
 			piCout << "copy framework" << f;
-			if (!fake) system((cmd_copydir + "\"" + fd + "\" \"" + out_dir + "\"" + cmd_suffix).data());
+			if (!fake) {
+				auto _r = system((cmd_copydir + "\"" + fd + "\" \"" + out_dir + "\"" + cmd_suffix).data());
+				NO_UNUSED(_r);
+			}
 		} else
 			miss_frameworks << f;
 	}