Calculate code run time/speed

Question

I am very curious about run time/speed about codes in ms visual studio.

As instance,

1. code:

byte[] buffer = new byte[4096]; var p = System.IO.Directory.GetFiles(directoryName);

2. code

var entry = new ZipEntry(Path.GetFileName(file)); entry.DateTime = DateTime.Now;

If i run 1. code ı want to see "it's running time/speed 0.03 seconds"

If i run 2. code ı want to see "it's running time/speed 0.06 seconds"

Is there anything to calculate running time/speed of codes in c# without using timer ?

Any help will be appreciated.

Thanks.

Are you profiling the allocation speed of the CLR with the byte[] example? ... what purpose does that serve? ... Also, look at the Stopwatch. — Simon Whitehead
– Simon Whitehead, Commented Apr 9, 2014 at 14:12
If i debug rows , i want to calculate running time/speed of debugging duration etc etc.. — user3409638
– user3409638, Commented Apr 9, 2014 at 14:13
Is this just for debugging/profiling? visual studio has a very handy performance analysis tool.. — Sayse
– Sayse, Commented Apr 9, 2014 at 14:13

Habib · Accepted Answer · 2014-04-09 14:22:41Z

4

The best thing to use for quickly profiling code is Stopwatch in System.Diagonstics

var sw = Stopwatch.StartNew(); ///.... stuff sw.Stop(); sw.ElapsedMilliseconds;

If this is something you may want to use in production, i'd recommend: http://miniprofiler.com/

edited Apr 9, 2014 at 14:22

Habib

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answered Apr 9, 2014 at 14:13

Dave Bish

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4 Comments

user3409638 Over a year ago

There is no anything as "StopWatch" in Winforms c# ? If i write StopWatch , there is no dll for StopWatch why can not i use it ?

Dave Bish Over a year ago

You will have to add a reference to System.Diagostics

Habib Over a year ago

its Stopwatch not StopWatch

James Over a year ago

@DaveBish there is no System.Diagnostics lib to reference, System.Diagnostics is just a namespace part of the core lib (System.dll).

James · Accepted Answer · 2014-04-09 14:18:24Z

You can use a Stopwatch for benchmarking code

var sw = Stopwatch.StartNew(); var entry = new ZipEntry(Path.GetFileName(file)); sw.Stop(); Console.WriteLine("Time to zip: {0}", sw.Elapsed);

You could create a helper method if you intend on doing using it a lot

public static TimeSpan Benchmark(Action action) { var sw = Stopwatch.StartNew(); action(); sw.Stop(); return sw.Elapsed; } ... var timeTaken = Benchmark(() => /* run some code */)

There is no anything as "StopWatch" in Winforms c# ? If i write StopWatch , there is no dll for StopWatch why can not i use it ?
@user3409638 yes there is, it's in the System.Diagnostics namespace, just add a using to the top of your app. Or alternatively, right click Stopwatch in the IDE and select Resolve and it will do that for you.
@user3409638 it's there, it's been part of the core framework since .NET 2.0.

woutervs · Accepted Answer · 2014-04-09 14:14:10Z

Typically one would use the stopwatch.startnew, stop, elapsedtime methods. There are some profiling tools on the market, and microsoft also has its own built-in performance suite. The following link is a tutorial on how to set it up. http://msdn.microsoft.com/en-us/library/ms182372.aspx

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