The following reply was made to PR kern/93378; it has been noted by GNATS. From: Anton Yuzhaninov <[EMAIL PROTECTED]> To: [EMAIL PROTECTED], [EMAIL PROTECTED] Cc: Subject: Re: kern/93378: [tcp] Slow data transfer in Postfix and Cyrus IMAP (workaround known) Date: Sun, 09 Mar 2008 00:43:45 +0300
Probably it is interact between delayed ack and Nagle's algorithm. They shouldn't be used together: http://developers.slashdot.org/comments.pl?sid=174457&cid=14515105 So application which may be affected by this problem should disable Nagle's algorithm for via socket option TCP_NODELAY. As I can see current postfix uses setsockopt TCP_NODELAY so consider to upgrade postfix to 2.4.7 or 2.5.1 first. Postifx 2.2.8 is too old. -- WBR, Anton Yuzhaninov _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
