Date: Sun, 23 Sep 2007 02:14:54 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: Jack Vogel <jfvogel@gmail.com> Cc: Artem Kuchin <matrix@itlegion.ru>, freebsd-current@freebsd.org Subject: Re: TSP on em makes send of streams very slow Message-ID: <46F5AFFE.1060508@FreeBSD.org> In-Reply-To: <2a41acea0709221647o3cdcb72pf6194c54782c61fb@mail.gmail.com> References: <01c801c7fc7a$696ab900$0c00a8c0@Artem> <2a41acea0709211359w37ba779dsec94de504a9f4a9c@mail.gmail.com> <019101c7fd3d$cd15f870$0c00a8c0@Artem> <2a41acea0709221647o3cdcb72pf6194c54782c61fb@mail.gmail.com>
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Jack Vogel wrote: > On 9/22/07, Artem Kuchin <matrix@itlegion.ru> 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
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