Thread: HOWTO: make your kobo faster by modifying filesystem options
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Old 09-06-2016, 09:57 AM   #11
davidfor
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Quote:
Originally Posted by rtiangha View Post
Really, the bottleneck in that case is Calibre, especially when using Kepubs; the driver is single threaded so it takes about 10-15 hours to process each epub one-at-a-time and then a few hours to transfer it all (I've noticed the write speed is about 2-2.5 MB/second). If the Kobo Extended Driver were multi-threaded and could process epubs in parallel like Calibre does if you manually do a batch Kepub conversion using one of the other plug-ins, then that would speed things up considerably for those with multi-core machines. One thing I haven't tried yet is to see if pre-converting epubs to kepubs in advance speeds things up in the event of recovering from a factory reset; I don't know if the Kobo plugins are smart enough to use a pre-existing kepub instead of converting a new one from scratch each time when sending to a device.
It's the send-to-books process overall that is single threaded. The extended driver is called as part of that process.

And, the drivers will send kepubs to the device if the driver is configured properly. The driver has a list of supported formats. The list order is the preferred order for sending formats. Having kepub first will send that if one exists.
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