Socket overlapped i/o ..

[Guest]

Hi:

Is there a discussion group for System.Net issues? I would appreciate this
post getting redirected there if there is one:

I understand from all the theory that overlapped i/o is good. However, I
have not found any good resource for what it means to take advantage of it
from System.Net.Sockets.

I am writing an asynchronous tcp client using System.Nets.Sockets.

Do all I have to do to take advantage of the WinSock 2 level overlapped I/O
is set UseOnlyOverlappedIO to true on every instance of the socket class that
I create?

Thanks.

 

[Henning Krause [MVP - Exchange]]

Hello,

The sockets class by default will use overlapped IO AND IO Completion ports
(On Windows NT system at least).

If you specify UseOnlyOverlappedIO you will disable IO Completion Ports,
which will actually hurt performance.

Kind regards,
Henning Krause

 

[Guest]

Thanks Henning. I am copying a reply I received from Vadym Stetsiak on the
performance group where I had posted the same question:

Here are good resources on async sockets performance and scalability

http://msdn.microsoft.com/msdnmag/issues/05/08/HighPerformanceSockets/default.aspx

http://www.coversant.net/Coversant/Blogs/tabid/88/EntryID/10/Default.aspx

 

[Chris Mullins [MVP]]

Here are good resources on async sockets performance and scalability
http://www.coversant.net/Coversant/Blogs/tabid/88/EntryID/10/Default.aspx

What a great blog entry!

(I couldn't resist. It's nice to see that stuff actually gets read by
people.....)