Date: Sat, 22 Sep 2007 16:47:36 -0700 From: "Jack Vogel" <jfvogel@gmail.com> To: "Artem Kuchin" <matrix@itlegion.ru> Cc: freebsd-current@freebsd.org Subject: Re: TSP on em makes send of streams very slow Message-ID: <2a41acea0709221647o3cdcb72pf6194c54782c61fb@mail.gmail.com> In-Reply-To: <019101c7fd3d$cd15f870$0c00a8c0@Artem> References: <01c801c7fc7a$696ab900$0c00a8c0@Artem> <2a41acea0709211359w37ba779dsec94de504a9f4a9c@mail.gmail.com> <019101c7fd3d$cd15f870$0c00a8c0@Artem>
next in thread | previous in thread | raw e-mail | index | archive | help
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
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?2a41acea0709221647o3cdcb72pf6194c54782c61fb>