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I ran into a problem with my Axim which caused me to hard reset and install from scratch. I took the opportunity to play around with my 256 MB Dane-Elec (Panasonic OEM) SD card. I re-formatted it a few different ways to see what difference the formatting made to performance.
Originally, the card came formatted FAT16 with 16KB clusters. Whenever I was writing lots of data to the SD card, the Axim was barely responsive. If I had two writes going on (AvantGo sync and a game installation, for example), the Axim was totally unresponsive.
I re-formatted the card with FAT16 and 4KB clusters. This yielded some different results. The Axim is much faster during writes to the SD card. Large files or multiple writes still seem to slow things down, though.
Read performance was never terrible, but I do see somewhat of an improvement since re-formatting.
I'm not sure why SD card writes use so much of the Axim's resources. The disk cache in the Pocket PC OS could dramatically affect performance. Perhaps someone more familiar can comment on this.
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-Islanti
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