In case anyone's wondering, here are the results I got following the guide.
So I failed to record any benchmarks before I followed this guide, but I have noticed a significant (about 80-90%) improvement in full screen flash video. Scrolling is much smoother, even on pages with an flv -- whereas it used to get super choppy and laggy as I scrolled down the page as it passed the flv. I suppose compiz animations are smoother (but I didn't install compiz till after applying these fixes)
00:00.0 Host bridge: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller (rev 03)
I followed the Optimal route and here's what I got:
First I edited Xorg.conf:
Originally I had tiling set to false but then decided to try true and it works fine this way. Still don't know what that means if anyone cares to clarify
Identifier "Configured Video Device"
Option "AccelMethod" "uxa"
Option "EXAOptimizeMigration" "true"
Option "MigrationHeuristic" "greedy"
Option "Tiling" "true"
On Part B Step 2 I neglected to see if any packages were to be removed because after adding the key a dialog popped up asking to update -- I don't think any packages were removed but then again I have no way of knowing (unless there are some logs I can look at?).
Then I downloaded and installed the fixmtrr script:
Don't know if that's better, but the output before installing the mtrr script had only two of those lines.
$ cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x07f800000 ( 2040MB), size= 8MB, count=1: uncachable
reg02: base=0x0a0000000 ( 2560MB), size= 256MB, count=1: write-combining
Then I did everything in Part C but somewhere along the line it asked me if it could update my /boot/grub/menu.lst and I said no (I recently edited it and didn't want it to screw it up). So then a bunch of stuff popped up on the screen..some stuff about DKMS...then I went to go reboot. As expected, the grub menu was exactly the same and it booted into the old 2.6.28-11-generic kernel. So I figured nothing changed.
Then today I went into my /boot/ directory and saw that the 2.6.30-02063002 kernel files are there so I edited menu.lst to include an option to boot it.
So it looks like I'm running it? Not really sure. Qualitative experience seems the same since before I changed menu.lst today.
$ uname -a
Linux Plato 2.6.30-02063002-generic #02063002 SMP Mon Jul 20 17:21:37 UTC 2009 i686 GNU/Linux
Final result: FLV video is very smooth and scrolling windows with it is smooth as well. Desktop/compiz animations are alright but then again they were never that great on 8.10 either -- I suppose they're about the same now. FLV playback is a heck of a lot smoother than on 8.10, however.
All in all, thanks for this guide, it really helped a lot!