From owner-freebsd-current@FreeBSD.ORG Thu Jul 3 17:28:20 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C96BC7F8 for ; Thu, 3 Jul 2014 17:28:20 +0000 (UTC) Received: from mail-qc0-x229.google.com (mail-qc0-x229.google.com [IPv6:2607:f8b0:400d:c01::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 84CC920D0 for ; Thu, 3 Jul 2014 17:28:20 +0000 (UTC) Received: by mail-qc0-f169.google.com with SMTP id c9so548160qcz.0 for ; Thu, 03 Jul 2014 10:28:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=Uk9/YQWngh15TXjDyoqIroJFDNmiU9CfcupsXgq5NMQ=; b=k4DbzRdjGsMS6l6BzdDhJPKv8ke3WJx21g2Qe2MP5oe0yRt48rFC28kscILj2nKVio zKSWGrWceGSvUfmvk8BZrQ1z+9IzFlGO6vRfuSBtofpisJh+4w8XrOth8frAwR/ywZmC am2cTMB7ipMyxSotsq8MGJKw/9irC1aEb9/Ka/DT8GKxDfL84Ua1hWNf2xMEQVAw7Spf zZN8ngSZQQXxqSSjKJlmCUiXP1l7MWH7Y8oQUqz4+kZaoG+UGErZVc4V6BIvTo0BS4It HwnEPcqRKj/+WDar/XuIUHCw7ne+gTvtRX63O86l/8SJQNVsC0/+1TSU2IqIAwNELTWI iEtg== MIME-Version: 1.0 X-Received: by 10.140.47.48 with SMTP id l45mr9404203qga.24.1404408499734; Thu, 03 Jul 2014 10:28:19 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.202.193 with HTTP; Thu, 3 Jul 2014 10:28:19 -0700 (PDT) In-Reply-To: <20140703102901.GQ5102@zxy.spb.ru> References: <20140701091252.GB3443@brick> <20140701231305.GA37246@zxy.spb.ru> <20140702112609.GA85758@zxy.spb.ru> <20140702203603.GO5102@zxy.spb.ru> <20140703091321.GP5102@zxy.spb.ru> <20140703102901.GQ5102@zxy.spb.ru> Date: Thu, 3 Jul 2014 10:28:19 -0700 X-Google-Sender-Auth: UB1GoOxgURdkEnpLxNkHeGJTXhs Message-ID: Subject: Re: FreeBSD iscsi target From: Adrian Chadd To: Slawa Olhovchenkov Content-Type: text/plain; charset=UTF-8 Cc: Nikolay Denev , Sreenivasa Honnur , FreeBSD Current , Kevin Oberman X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Jul 2014 17:28:20 -0000 Which NIC? -a On 3 July 2014 03:29, Slawa Olhovchenkov wrote: > On Thu, Jul 03, 2014 at 10:35:55AM +0100, Nikolay Denev wrote: > >> >> I found this white paper useful in understanding how this works : >> >> http://www.cisco.com/c/en/us/products/collateral/switches/nexus-3000-series-switches/white_paper_c11-726674.pdf >> > >> > In real world "Reality is quite different than it actually is". >> > http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/white_paper_c11-696669.html >> > >> > See "Packet Path Theory of Operation. Ingress Mode". >> > >> >> Interesting, however this seems like implementation specific detail, >> and not limitation of native 40Gbit ethernet. > > I see some perfomance tests on solaris and 40G link. > In this test perfomance limited about 10Gbit per flow. > May be I found links to this test. > > May be some NIC's implementation specific detail also limited > performance per flow. > >> Still, it's something that one must be aware of (esp when dealing with >> Cisco gear :) ) >> >> I wonder why they are not doing something like this : >> http://blog.ipspace.net/2011/04/brocade-vcs-fabric-has-almost-perfect.html >> >> --Nikolay > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"