Date: Wed, 8 Jan 1997 17:19:27 -0600 (CST) From: Mark Tinguely <tinguely@plains.nodak.edu> To: freebsd-hackers@freebsd.org Subject: FYI: P6 configure (from news) Message-ID: <199701082319.RAA28628@plains.nodak.edu>
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taken from news: ------------- From: Andrew Vanderstock <ajv@greebo.svhm.org.au> Subject: P6 PCI enabler (Was: Re: 3D MUCH FASTER THAN MATROX) Date: Wed, 08 Jan 1997 21:21:50 +1100 Organization: St Vincent's Hospital, Melbourne Message-ID: <32D3753E.25EE@greebo.svhm.org.au> I'm working on a P6 "enabler" which will enable write combining and setup the fastest possible MTTR setup for unixes pretty much automatically. It will also have a "danger! danger!" PCI write posting option for the Orion and will automatically enable PCI write posting for all 440FX Natoma's. It will be for free unixes (Linux first, others when they test it out :-) and source will be provided. SMP support will probably be a 1.1 revision, as all processors have to run the same MTRR config and I don't have a SMP machine to test it with. These options boosted my throughput on my HP VT6/150 with the duff Orion >from 5.8 MB/s to 56 MB/s using SciTech's display doctor under Win95, and moved my xbench scores for my Millennium to within 70% of a 200 MHz Natoma PPro (I'm not going to mention xbench figures, as the driver has not been released, and the scores may go down after we finish getting all the bugs out - suffice to say that we have done good in this version :-). I'm hoping by correctly setting write back, write posting and setting the "holes" up correctly, I might get even closer. Natomas are capable of 92 MB/s to the PCI bus, about 12 MB/s more than the fastest Triton revision to date. This enabler, yet to be titled, is not part of Xfree86, and you can read all about in a few weeks in http://www.x86.com (when I've finished the enabler and written the article). [deleted]
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