From owner-freebsd-current@FreeBSD.ORG Sun Sep 23 00:14:59 2007 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C030A16A419 for ; Sun, 23 Sep 2007 00:14:59 +0000 (UTC) (envelope-from kris@FreeBSD.org) Received: from weak.local (hub.freebsd.org [IPv6:2001:4f8:fff6::36]) by mx1.freebsd.org (Postfix) with ESMTP id D4B4E13C457; Sun, 23 Sep 2007 00:14:54 +0000 (UTC) (envelope-from kris@FreeBSD.org) Message-ID: <46F5AFFE.1060508@FreeBSD.org> Date: Sun, 23 Sep 2007 02:14:54 +0200 From: Kris Kennaway User-Agent: Thunderbird 2.0.0.6 (Macintosh/20070728) MIME-Version: 1.0 To: Jack Vogel References: <01c801c7fc7a$696ab900$0c00a8c0@Artem> <2a41acea0709211359w37ba779dsec94de504a9f4a9c@mail.gmail.com> <019101c7fd3d$cd15f870$0c00a8c0@Artem> <2a41acea0709221647o3cdcb72pf6194c54782c61fb@mail.gmail.com> In-Reply-To: <2a41acea0709221647o3cdcb72pf6194c54782c61fb@mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Artem Kuchin , freebsd-current@freebsd.org Subject: Re: TSP on em makes send of streams very slow X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Sun, 23 Sep 2007 00:14:59 -0000 Jack Vogel wrote: > On 9/22/07, Artem Kuchin wrote: >>> TSO is for some environments, it isn't gonna be useful at 100Mb >>> (which you are), it can be useful at 1Gb but not always, when you get >>> to 10G its >>> a HUGE benefit. >>> >>> Just cuz you can shoot yourself in the foot doesn't mean the gun has a >>> problem :) >> But wait, i did not shoot myself. I have been shot by the driver w/o any >> preliminary warning. TSO4 was enabled by DEFAULT (i did not enable it), >> so anybody can be in my place if used the same driver on the similar hardware >> (which is plenty). >> >> So, i think this is a problem which really need to be addressed. > > It is on by default because it the majority of cases its a benefit, you > found it to be a problem and turned it off, your problem is solved. > > I admit, at one point I considered disabling it automatically for anything > under Gig speed, but a large community has used this driver with this > feature for over a year, no one has lobbied to have to disabled, so I > have not. > > If there are others who think this would be a good idea, speak up, and > I will do so. > > Cheers, > > Jack > _______________________________________________ > 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" > > Something is clearly going very wrong for performance to be that bad, so I think you need to work out why that is happening. Is it a problem with that particular card model, or what? Kris