From owner-freebsd-hackers@FreeBSD.ORG Fri May 24 15:45:52 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 76C179E5 for ; Fri, 24 May 2013 15:45:52 +0000 (UTC) (envelope-from outbackdingo@gmail.com) Received: from mail-ob0-x230.google.com (mail-ob0-x230.google.com [IPv6:2607:f8b0:4003:c01::230]) by mx1.freebsd.org (Postfix) with ESMTP id 40932A06 for ; Fri, 24 May 2013 15:45:52 +0000 (UTC) Received: by mail-ob0-f176.google.com with SMTP id wp18so5636030obc.35 for ; Fri, 24 May 2013 08:45:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=b14fbMUSBpJ7nparn7/3dYL5GwZd4a3kyF91xJb5CEk=; b=C47KIJP2ObUQqPaerVtisnEwGddK9NKlrJV/uHoVWSoZoDoP+2Ul7T6UUtZnoDRGJC U6XiU29C4pG5WyRjkCIN2qi8wptDCnh8UwZzKQXhTxBAsTm2s3Jg1RI5y4fOKHwu5Fot oeSyvG94r0naGxo//n0hBO5vjCpUzJmCDhdk8U4sQYzhQIYksNtpglsLVDyFnDsaiKIu szt4GovVvhjWkBLoMrsfvyOrYC7nkW5FoiAu+XmqdpovXuoeoshQXQStXGbYKLqCC2/q mi5mREAJ8+Or8Bc3DqIR9T89awvpvBejUtN8qrq0slNcScZzB8fGtUJGNJCOXWUjfbe1 L6JA== MIME-Version: 1.0 X-Received: by 10.60.94.212 with SMTP id de20mr5104374oeb.129.1369410351811; Fri, 24 May 2013 08:45:51 -0700 (PDT) Received: by 10.76.96.49 with HTTP; Fri, 24 May 2013 08:45:51 -0700 (PDT) In-Reply-To: References: <175CCF5F49938B4D99B2E3EF7F558EBE381FA6E5AA@SC-VEXCH4.marvell.com> <1369406798.20748.30.camel@EL-DT095.site> Date: Fri, 24 May 2013 11:45:51 -0400 Message-ID: Subject: Re: Low Tx-Rx performance with 10Gb NICs From: Outback Dingo To: Igor Mozolevsky Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: Hackers freeBSD , Axel Fischer , Ralf Assmann , Lino Sanfilippo , Markus Althoff X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 May 2013 15:45:52 -0000 On Fri, May 24, 2013 at 11:41 AM, Igor Mozolevsky wrote: > On Friday, 24 May 2013, Axel Fischer wrote: > > > Additionally I noticed the following TCP errors > > with netstat -s ...: > > > > 1186 data packets (1717328 bytes) retransmitted > > 6847875 window update packets > > 2319 duplicate acks > > 25831 out-of-order packets (37403288 bytes) > > 3733 discarded due to memory problems (drops) > > 1186 segment rexmits in SACK recovery episodes > > 1717328 byte rexmits in SACK recovery episodes > > > > > > > > Looks like your data is flooding your memory buffers, have a look through > https://calomel.org/freebsd_network_tuning.html > > Ive got an 10Gb ix card i cant get to do more then 1.2Gbs send on FreeBSD 9-stable pretty frustrating hunting down the issue. > -- > Igor M. > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >