Thread.Start significantly slower than using ThreadPool

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tango - 04 Jun 2005 12:39 GMT

During some testing in a simple console application, the automated use of a
ThreadPool performs more than 8 times faster (100,000 cycles in 18secs) than
controlling the same application through Thread.Start (100,000 cycles in 2:30
+).

Is this typical?

I'm using

Microsoft Visual C# .NET 2003
Microsoft .NET Framework 1.1.4322 SP1

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Jon Skeet [C# MVP] - 04 Jun 2005 15:07 GMT

> During some testing in a simple console application, the automated use of a
> ThreadPool performs more than 8 times faster (100,000 cycles in 18secs) than
> controlling the same application through Thread.Start (100,000 cycles in 2:30
> +).
>
> Is this typical?

Yes, starting a new thread is slightly expensive - but it's rare to
need to start 100,000 threads in a short period of time.

There are disadvantages to using the system threadpool though - you can
use a custom threadpool to get the best of both worlds.

See http://www.pobox.com/~skeet/csharp/miscutil

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Jon Skeet - <skeet@pobox.com>
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