Srinidhi M wrote: > Could you please let me know, which module in TCP/IP is consuming more > time than UDP? How can we reduce packet processing time when sending > through TCP stack? Please let me know your thoughts. Are you sure you wanted to post this message on the Linux PPP mailing list? Anyway, without knowing a lot about your application, how you're measuring things, and what environment you're running in, it's a little hard to guess at what sort of change you might require. But I'll give it a try. Have you tried setting the TCP_NODELAY option and/or redesigning around TCP_CORK? If your application does a lot of tiny write(2) calls, you will sometimes see RTT delays in delivery. This is normal, and it's something that the stack does in order to protect the network against misbehaving (or just inefficient) applications. You can disable it in order to force a write(2) to result in a transmission ... but be careful if you do this, because doing so can result in a flood of tiny packets if you (say) write a byte at a time. Have you considered SCTP instead? If you have a message-oriented protocol (rather than a stream-oriented one), and you need reliable delivery, SCTP may be a better option for you than TCP. -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
