How to realize accurate time counter (millisecond precision)

Question

Sorry for my English.

I have developed a client-server game on Unity and I need equal time counters on the client and server for synchronization. On the server side (Java) all is working fine.

On the client I tried to set Fixed Time-step to 0.001 and count time on FixedUpdate. It works, but in one thread with other scripts and sometimes lags. I became convinced of this in this article

Also I tried to count time in other threads, but this code gets wrong time (I tried TICK_TIME 1 and 5)

while (started)
         {
             time += TICK_TIME;
             Thread.Sleep(TICK_TIME);
         }

How to realize stable counter? And is it possible in Unity?

Answer 1

http://msdn.microsoft.com/en-us/library/system.diagnostics.stopwatch%28v=vs.110%29.aspx

var watch = Stopwatch.StartNew();

//Do work

Console.WriteLine("Time elapsed: {0}", watch.ElapsedMilliseconds);