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Date:      13 Feb 2003 13:14:15 +0100
From:      Jan Lentfer <Jan.Lentfer@web.de>
To:        Marco Beishuizen <marco@beishuizen.info>
Cc:        Andrew Gallatin <gallatin@cs.duke.edu>, FreeBSD alpha mailing list <alpha@FreeBSD.ORG>
Subject:   Re: Why is XFree86 on FreeBSD/Alpha much slower?
Message-ID:  <1045138456.618.5.camel@neslonek>
In-Reply-To: <Pine.BSF.4.53.0302112332001.420@tsunami.bsd>
References:  <Pine.BSF.4.53.0302112042190.294@tsunami.bsd> <15945.23721.759825.313603@grasshopper.cs.duke.edu> <Pine.BSF.4.53.0302112129370.294@tsunami.bsd> <15945.24538.794799.926276@grasshopper.cs.duke.edu> <Pine.BSF.4.53.0302112147000.294@tsunami.bsd> <15945.25465.768071.583030@grasshopper.cs.duke.edu> <Pine.BSF.4.53.0302112200580.294@tsunami.bsd> <15945.26349.357142.151047@grasshopper.cs.duke.edu> <Pine.BSF.4.53.0302112216160.294@tsunami.bsd> <15945.27540.655333.324376@grasshopper.cs.duke.edu>  <Pine.BSF.4.53.0302112332001.420@tsunami.bsd>

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Am Die, 2003-02-11 um 23.38 schrieb Marco Beishuizen:
> On Tue, 11 Feb 2003, the wise Andrew Gallatin spoke, and said:
> 
> >  > > Search for "set pci_device_override" at
> >  > > http://www.freebsd.org/releases/5.0R/hardware-alpha.html
> >
> > The bug in question occurrs when DMAing across a page boundary.
> > In my experience, this bug causes the machine to lock solid, not to
> > exhibit corruption.
> >
> > Like Fred said, its a graphics controller not a scsi adapter.  Give it
> > a shot.
> 
> Well, the Matrox is in a 64 bit slot now, and I have to say it's a big
> improvement! I did a 'set pci_device_override -1' in the console, and
> graphics performance in acrobat and gimp is a lot faster now.
> 
> Thank you all for the tips.


Hi all,

I tried to gather some numbers so one can compare the graphic
performance of 32bit vs. 64bit slot.
I did "x11perf -all" on a PWS 500a, Debian Linux 2.4.20, Xfree 4.2.1,
ATI Radeon with DRI.

Here are the results from x11perfcomp:

lentferj@neslonek:~$ x11perfcomp -r ati32bit ati64bit 
1: ati32bit
2: ati64bit

    1              2           Operation
--------   -----------------   -----------------
2140000.0   4880000.0 (  2.28)   Dot 
1170000.0   1190000.0 (  1.02)   1x1 rectangle 
1170000.0   1180000.0 (  1.01)   10x10 rectangle 
 32700.0    32700.0 (  1.00)   100x100 rectangle 
  1520.0     1530.0 (  1.01)   500x500 rectangle 
691000.0   715000.0 (  1.03)   1x1 stippled rectangle (8x8 stipple) 
633000.0   632000.0 (  1.00)   10x10 stippled rectangle (8x8 stipple) 
 10500.0    10900.0 (  1.04)   100x100 stippled rectangle (8x8 stipple) 
   350.0      352.0 (  1.01)   500x500 stippled rectangle (8x8 stipple) 
683000.0   714000.0 (  1.05)   1x1 opaque stippled rectangle (8x8
stipple) 
673000.0   690000.0 (  1.03)   10x10 opaque stippled rectangle (8x8
stipple) 
 18400.0    18000.0 (  0.98)   100x100 opaque stippled rectangle (8x8
stipple) 
   839.0      749.0 (  0.89)   500x500 opaque stippled rectangle (8x8
stipple) 
678000.0   696000.0 (  1.03)   1x1 tiled rectangle (4x4 tile) 
667000.0   685000.0 (  1.03)   10x10 tiled rectangle (4x4 tile) 
 18400.0    18100.0 (  0.98)   100x100 tiled rectangle (4x4 tile) 
   748.0      749.0 (  1.00)   500x500 tiled rectangle (4x4 tile) 
709000.0   720000.0 (  1.02)   1x1 stippled rectangle (17x15 stipple) 
664000.0   674000.0 (  1.02)   10x10 stippled rectangle (17x15 stipple) 
 11000.0    11000.0 (  1.00)   100x100 stippled rectangle (17x15
stipple) 
   363.0      363.0 (  1.00)   500x500 stippled rectangle (17x15
stipple) 
709000.0   713000.0 (  1.01)   1x1 opaque stippled rectangle (17x15
stipple) 
679000.0   700000.0 (  1.03)   10x10 opaque stippled rectangle (17x15
stipple) 
 18400.0    18500.0 (  1.01)   100x100 opaque stippled rectangle (17x15
stipple) 
   746.0      785.0 (  1.05)   500x500 opaque stippled rectangle (17x15
stipple) 
708000.0   724000.0 (  1.02)   1x1 tiled rectangle (17x15 tile) 
679000.0   698000.0 (  1.03)   10x10 tiled rectangle (17x15 tile) 
 18300.0    18500.0 (  1.01)   100x100 tiled rectangle (17x15 tile) 
   731.0      785.0 (  1.07)   500x500 tiled rectangle (17x15 tile) 
737000.0   752000.0 (  1.02)   1x1 stippled rectangle (161x145 stipple) 
692000.0   692000.0 (  1.00)   10x10 stippled rectangle (161x145
stipple) 
 12800.0    12500.0 (  0.98)   100x100 stippled rectangle (161x145
stipple) 
   400.0      407.0 (  1.02)   500x500 stippled rectangle (161x145
stipple) 
740000.0   755000.0 (  1.02)   1x1 opaque stippled rectangle (161x145
stipple) 
721000.0   731000.0 (  1.01)   10x10 opaque stippled rectangle (161x145
stipple) 
 18900.0    19300.0 (  1.02)   100x100 opaque stippled rectangle
(161x145 stipple) 
   805.0      847.0 (  1.05)   500x500 opaque stippled rectangle
(161x145 stipple) 
740000.0   754000.0 (  1.02)   1x1 tiled rectangle (161x145 tile) 
720000.0   737000.0 (  1.02)   10x10 tiled rectangle (161x145 tile) 
 18900.0    18300.0 (  0.97)   100x100 tiled rectangle (161x145 tile) 
   805.0      788.0 (  0.98)   500x500 tiled rectangle (161x145 tile) 
739000.0   755000.0 (  1.02)   1x1 tiled rectangle (216x208 tile) 
725000.0   742000.0 (  1.02)   10x10 tiled rectangle (216x208 tile) 
 18300.0    17600.0 (  0.96)   100x100 tiled rectangle (216x208 tile) 
   808.0      782.0 (  0.97)   500x500 tiled rectangle (216x208 tile) 
1080000.0   1160000.0 (  1.07)   1-pixel line segment 
1240000.0   1280000.0 (  1.03)   10-pixel line segment 
427000.0   428000.0 (  1.00)   100-pixel line segment 
 86300.0    86500.0 (  1.00)   500-pixel line segment 
424000.0   439000.0 (  1.04)   100-pixel line segment (1 kid) 
328000.0   352000.0 (  1.07)   100-pixel line segment (2 kids)


I put the graphic card in the lower one of the two 64bit slot. Would it
make any difference it I put in the upper of the two?


Cheers,

Jan


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