site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On 21 Sep 2007, at 19:26, Basavaraj wrote: Jonas _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... Problem is not because of receiving data. I saw tcp dump on Ethereal, actual problem is with TCP acknowledgment. Acknowledgments are not going immediately after receiving packets. Disabling Naggle algorithm didn't helped. Have you also tried to disable delayed acks? (sysctl net.inet.tcp.delayed_ack, try setting it to 0) This email sent to site_archiver@lists.apple.com