Tcpwindowsize
Use the tcpwindowsize option to specify, in kilobytes, the size you want to use for the TCP/IP sliding window for your client node.
The sending host cannot send more data until it receives an acknowledgment and a TCP receive window update. Each TCP packet contains the advertised TCP receive window on the connection. A larger window allows the sender to continue sending data and can improve communication performance.
Supported Clients
This option is valid for all clients.
Options File
Place this option in the client system-options file (dsm.sys) within a server stanza. You can set this option on the Communication tab, Window Size field of the Preferences editor.
Place this option in the client options file (dsm.opt). You can set this option on the Communication tab, Window Size field of the Preferences editor.
Syntax
Parameters
- window_size
- Specifies the size, in kilobytes, to use for your client node TCP/IP sliding window. The range of values is 0 through 2048. A value of 0 allows the client to use the operating system default TCP window size. Values from 1 to 2048 indicate that the window size is in the range of 1KB to 2MB. If you specify a value less than 1, the TCP window size defaults to 1. If you specify a value greater than 2048, the TCP window size defaults to 2048.
- window_size
- Specifies the size, in kilobytes, to use for your client node TCP/IP sliding window. The range of values is 0 through 2048. A value of 0 allows the client to use the operating system default TCP window size. Values from 1 to 2048 indicate that the window size is in the range of 1KB to 2MB. If you specify a value less than 1, the TCP window size defaults to 1. If you specify a value greater than 2048, the TCP window size defaults to 2048.
Examples
- Options file:
tcpwindowsize 63
- Command line:
-tcpw=63
This option is valid only on the initial command line. It is not valid in interactive mode.