From owner-freebsd-hackers Thu Aug 30 22: 3:20 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from niwun.pair.com (niwun.pair.com [209.68.2.70]) by hub.freebsd.org (Postfix) with SMTP id 8351F37B403 for ; Thu, 30 Aug 2001 22:03:17 -0700 (PDT) (envelope-from silby@silby.com) Received: (qmail 85309 invoked by uid 3193); 31 Aug 2001 04:00:28 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 31 Aug 2001 04:00:28 -0000 Date: Fri, 31 Aug 2001 00:00:28 -0400 (EDT) From: Mike Silbersack X-Sender: To: Hans Christensen Cc: Subject: Re: SLOW ftp transfers one way In-Reply-To: <006c01c131cf$1ea67020$523e5042@datamatrix.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 30 Aug 2001, Hans Christensen wrote: > Here is where it gets weird. If I ftp into one of my boxes at Site A > across the WAN (in this case from a colocation facility) and put a large > file onto my server in Site A, I get speeds of about 10KB/s. This may > fluctuate from 4KB/s to 16KB/s, but it far below what one would normally see > across a T1 line. Interestingly enough, sending ftp traffic out of Site A > seems to move five to ten time faster - not perfect, but workable. Below are Grab some traffic dumps with tcpdump of the transfers in question. (Not the 1GB ones, smaller ones. ) Preferrably, run tcpdump at the same time on *both* sides of the connection. This way, you'll be able to see where packets are getting dropped and/or what weird tcp interactions are occuring. Mike "Silby" Silbersack To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message