Thread: Calibre Speedup
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Old 10-22-2012, 05:42 PM   #21
speakingtohe
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Quote:
Originally Posted by unboggling View Post
FYI.

I upgraded startup drive to SSD from hard disk, and RAM from 8 GB to 16 GB, in an early 2011 Macbook Pro 17 inch notebook that has a 2.2 GHz quad core i7 processor. Did it myself.

Apple says this model only can be upgraded to 8 GB maximum RAM, but some research showed the real max is 16 GB. I haven't had any problems since installing the 16 GB RAM last week.

The SSD has 6 gigabit link speed, while the old hard disk has 3 gigabit. To preserve the life of the SSD, I turned on trim support and noatime, turned off local Time Machine snapshots, turned off sleep mode memory backup to persistent storage, and disabled sleep disk image.

Speedup results, without doing anything with temp folders and ramdisk:
  • OS X startup time: over 500% faster with SSD, a significant difference.
  • calibre startup time: faster by approx 1 second, approx 5%, with calibre app, libraries, and config dir all on SSD. Not as much speedup as I expected.
  • bulk conversion time: shaved 1 or 2 seconds off each conversion during bulk conversion operation, approx 5% faster on SSD. Not as much speedup as I expected.
Interesting.

I am not really surprised that calibre does not convert faster as it is pretty cpu intensive and you have lots of RAM.

My calibre startup time seems to be about 10 seconds (I have way too many books in there) with SATA HD and 8G RAM, so even 5% does not excite me.

Nice to see some actual numbers though.

Thanks

Helen
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