Hi, I was trying to run iperf with a TCP window size of 256 KB but find that the default window size is limited to 32 KB. Is there any way to change this or is the NetBSD stack limiting the TCP window size to 32 KB. Thanks Regards Abhay
There's an iperf option to vary this. Sent from my BlackBerry 10 smartphone on the Rogers network. From: Abhay Ravi Chandran Sent: Monday, May 6, 2013 6:00 PM To: drivers-networking Reply To: drivers-networking@community.qnx.com Subject: TCP Window size Hi, I was trying to run iperf with a TCP window size of 256 KB but find that the default window size is limited to 32 KB. Is there any way to change this or is the NetBSD stack limiting the TCP window size to 32 KB. Thanks Regards Abhay _______________________________________________ Networking Drivers http://community.qnx.com/sf/go/post101193 To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com
I tried to change the window size using the -w option but it gives a warning saying window size requested is 256 KB but current window size is 32 KB. Some research on the internet led me to the conclusion that the TCP window size is dependent on the network stack. I wanted to know what is the TCP window size supported by the QNX network stack?
Yes, it's handled by the network stack, just like on every other OS out there. Various window sizes are supported. On Tue, May 07, 2013 at 10:57:41AM -0400, Abhay Ravi Chandran wrote: > I tried to change the window size using the -w option but it gives a warning saying window size requested is 256 KB but current window size is 32 KB. Some research on the internet led me to the conclusion that the TCP window size is dependent on the network stack. I wanted to know what is the TCP window size supported by the QNX network stack? > > > > _______________________________________________ > > Networking Drivers > http://community.qnx.com/sf/go/post101224 > To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com
How do I change the TCP window size in QNX 6.5.0 SP1 to 256KB ?
setsockopt(s, SOL_SOCKET, SO_RCVBUF, ,) Sent from my BlackBerry 10 smartphone on the Rogers network. From: Abhay Ravi Chandran Sent: Tuesday, May 7, 2013 12:19 PM To: drivers-networking Reply To: drivers-networking@community.qnx.com Subject: Re: TCP Window size How do I change the TCP window size in QNX 6.5.0 SP1 to 256KB ? _______________________________________________ Networking Drivers http://community.qnx.com/sf/go/post101233 To cancel your subscription to this discussion, please e-mail drivers-networking-unsubscribe@community.qnx.com
