Quote:
Originally Posted by dumining
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Sequential:
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Read: 16.41 MB/s
Write: 8.30 MB/s
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Access Times:
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Read: 3.692 ms
Write: 17.971 ms
OK it is no rocket ship compared to a SSD but would like to be able to get more out of removable storage with Calibre - (but probably would require the database to be on the SSD only needing to point to files which dont change on the SDHC - which as I understand is not how Calibre works?)
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Those write access times look pretty bad. It might even be worse than mechanical hard drives. It's possible to get that kind of behavior (metadata in a different location from the actual library) by setting the CALIBRE_OVERRIDE_DATABASE_PATH variable but you would lose the ability to use multiple libraries. Still need to write to the SDHC for the metadata.opf, though.
Quote:
Originally Posted by dumining
It may be coincidence but changing in device manager - disk drives - multiple card reader USB device - properties - policies - select better performance (enables write caching) changed the 'move on to the next book in edit metadata' time from 60s+ to a consistent 25s.
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That's to be expected. Write caching uses RAM. If this solves your problem and you don't need to be able to quickly remove the SD card from your PC, you might just stick to this.