Thread: CDMA Touch Pro XIPs 20764 20771 20954 21015 21018 21028 21032 21109
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Old 01-30-2009, 02:46 PM
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gguruusa
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Re: New XIP for 21109 sys with working encryption (ver 2 25-Jan-2009)
Quote:
Originally Posted by FormerPalmOS View Post
The changes that (IMHO) affect speed aren't due to resizing or shrinking - gaining memory is just a bonus. The speed gains are from changes to boot.hv to take advantage of the file filter cache when a larger page pool is used (larger than stock 6) and the file system replication filter. Neither was set-up correctly in the stock boot.hv(again, IMHO). Of course what started this all was the fact that the XIP Scott started with had the CacheFilt removed (tough to take advantage of it if it ain't there). That and I need encryption so removing mencfilt isn't an option.

BTW - the way I have this set-up mencfilt isn't even attached to the FATFS running on the on-board NAND, so there would be ZERO speed difference from removing that dll. And it's not big enough that a significant amount of RAM could be recovered - so I see ZERO value in removing it - unless as you point out one were to run out of space in the XIP. I'll admit this is a possibility with the XIP as I have it, but keep in mind this project was intended to speed up my phone for the way I use it. I posted this here for anyone else in a similar situation who may benefit. FOr someone who wants to import new XIPs or load other stuff into XIP, this thread ain't the place to be lookin'...
Yeah - I missed that your list of changes at the top of post 1 was for ver. 1 to ver. 2 of your xip. I can see your boot.hv changes having some effect. Sadly, they are 99% of the bang for 1% of the work (encryption aside). What concerned me is people adopting your xip for entirely the wrong reasons, which you nicely pointed out is getting encryption back. Thanks for the clarification.

BTW, thanks for the info early in this thread. Usefull stuff.
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Last edited by gguruusa; 01-30-2009 at 03:20 PM.
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