Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 5 Apr 2001 14:15:25 -0500 (CDT)
From:      Jonathan Lemon <jlemon@flugsvamp.com>
To:        Cy.Schubert@uumail.gov.bc.ca, stable@freebsd.org
Subject:   Re: Answer Found: TCP New Reno algorithm
Message-ID:  <200104051915.f35JFPf38752@prism.flugsvamp.com>
In-Reply-To: <local.mail.freebsd-stable/200104051727.f35HRp324853@cwsys.cwsent.com>

next in thread | previous in thread | raw e-mail | index | archive | help
In article <local.mail.freebsd-stable/200104051727.f35HRp324853@cwsys.cwsent.com> you write:
>No need to reply.  Discovered that the Reno TCP algorithm is a rate 
>limiting algorithm for congested networks.  Our network is chronically 
>congested, hence the slow Veritas backups.

Actually, this is incorrect.  TCP newreno is an algorithm for 
better recovery of lost packets, in the absence of a SACK
implementation.  newreno should improve performance during 
packet drops, not decrease it.

I would be interested in seeing a tcpdump of the traffic, in
order to see what is going wrong.  Would it be possible to get
a binary tcpdump (-w option) of the traffic stream on both machines?
--
Jonathan

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200104051915.f35JFPf38752>