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Old 03-01-2009, 01:11 PM
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Re: Touch Pro / WM6 file system caching and performance discussion

Quote:
Originally Posted by shoobadie View Post
if I understand your post correctly, areyou saying that suggetsions like this aren't relevant (useful) in WM6:

"Once you’ve installed .NetCF 3.5, download and install Advanced Config here:
http://www.touchxperience.com/en/advanced-configuration-tool/downloads.html
After you have installed the program on your phone, launch the program and make the following changes:
Under the “Perfomances” category:
  • Change file system cache to 8MB
  • Change file system filter cache to 131072
  • Change Glyph cache to 32KB"
Thanks!
Well - sort-of. The file filter cache change will reserve memory but that memory won't be usable. The file filter cache applies only to the root drive (i.e. can't be applied to the SD) - it is loaded and configured at early boot - so it gets its settings from the boot.hv in the XIP section. YOu can't change that. So you're just wasting memory changing that value.

The file system cache tweak might apply to the SD card - but only if Advanced Config actually changes the value at \HKLM\System\Storage Manager\FATFS, not if it changes the value under \HKLM\System\Storage\Profiles\FLASHDRV\FATFS. Again, changing this might reserve more memory, but the disk cache size that is actually used by the device is set at early boot again by boot.hv (so again, you can't change it anyway).

The glyphcache tweak may or may not do something. The theory sounds reasonable, and this tweak would indeed "change" something since the glyphcache is set in GDI which is loaded after early boot. But no one seems to have hard evidence that changing this speeds anything up (or that it hurts, wastes memory or slows anything down). So I say keep this one.

Also, keep in mind that Advanced Config (and Diamond Tweak) were written for GSM devices. Use them on a CDMA device and bad things might happen (I have confirmed at least one bad thing that happens). So I don't even use these.

Best way to learn (though time consuming) is to capture your registry before and after you make tweaks, see what has changed by comparing the two registries, then decide what to keep and implement your tweaks as regedits.
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