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Date: Tue, 30 Mar 2010 15:35:27 +1300 From: Ben Hoyt <benhoyt@...il.com> To: netdev@...r.kernel.org Subject: Re: Minimizing TCP latency > One machine sends messages, and messages are not aknowledged by other > part ? Is it one way communication ? No, it's two-way communication. It's really the round-trip time/latency that's important. > What are the targets ? (time constraints) We're currently seeing a round-trip time of about 40us between two Linux servers on our network (so presumably about 20us one way). Anything quicker than that would be nice, but we're hoping to get down to about half that. > Mono threaded application handling one tcp flow ? > Are you handling a very light load on few flows, or many flows ? > Are machines all in the same LAN ? It's a single-threaded application handling one TCP session with light load, maybe one or two 512-byte packets per minute. The machines are on the same localized network. There's a (fairly high-speed) router in between, but I think most of the delays are being introduced at the NIC and Linux levels. Thanks, Ben. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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