Resources and tools for TCP tuning_问答_开发者

开发者 https://www.devze.com 2023-01-07 22:32 出处：网络

I\'m developing an application where, to satisfy the performance requirements, tuning of low-level network stuff (such as TCP window size etc) seems to be required.

I'm developing an application where, to satisfy the performance requirements, tuning of low-level network stuff (such as TCP window size etc) seems to be required.

I found the magnitude of my knowledge to be a bit better than "there's TCP and there's UDP", which is far from enough for this task.

开发者_如何学JAVA

What resources might I study to get a better knowledge of which aspects of TCP influence which performance characteristics in which usage scenarios (for example, how to decrease latency while transmitting 100kb packets to 1000 clients simultaneously on a 10gbit LAN), etc.?

What tools might help me? (I already know about Wireshark, but most probably I am not using it to its full potential)

First understand what you're doing:

http://en.wikipedia.org/wiki/Transmission_Control_Protocol
http://www.tcpipguide.com/free/t_TCPWindowSizeAdjustmentandFlowControl.htm

Then understand how to look at what you're about to change:

http://www.wireshark.org/
http://wiki.wireshark.org/TCP_Analyze_Sequence_Numbers
http://www.microsoft.com/downloads/details.aspx?familyid=983b941d-06cb-4658-b7f6-3088333d062f&displaylang=en

Then understand how to change things:

http://msdn.microsoft.com/en-us/library/ms819736.aspx
http://blogs.msdn.com/b/wndp/archive/2007/07/05/receive-window-auto-tuning-on-vista.aspx

Since you're currently on a windows platform and you mention that you're "developing an application"... You probably also want to know about I/O Completion Ports and how you maximise data flow whilst conserving server resources using write completion driven flow control. I've written about these quite a bit and the last link is a link to my free high performance C++ client/server framework which may give you some pointers as to how to use IOCP efficiently.