Messages in this thread | | | Date | Wed, 31 Mar 2004 13:02:03 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: Powers-of-two - 7 for recv() length?? |
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On Wed, 31 Mar 2004, Stephen Hemminger wrote:
> What is the socket send/receive buffering, and the underlying network. > You need to look at the data flow with something like tcpdump and tcptrace. > If you get flow controlled or lots of other reasons, TCP will validly > send a small number of bytes (like 1) which will get things out of alignment. >
Hmmm. I get lots of truncated IP packets. See attached. I've tried to help by setting both RCV_BUF and SND_BUF to 1/2 megabytes. Nothing seems to work except sending only 1436 bytes at a time. That makes everything miserably slow. 1436 comes from (1500 - 64) 1500 being the ethernet packet length, 64 being the IP header length.
Cheers, Dick Johnson Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips). Note 96.31% of all statistics are fiction.
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