[unboggling]

I'm wondering if I can improve calibre performance, though I haven't had any performance problems. Didn't see much discussion in the manual, except for avoiding some problems on Windows. Saw some old threads that confused me more than enlightened me.

These are some calibre settings I've been using, on OS X, quad-core i7.

1. Job Priority = Normal (Behavior).
2. Max simultaneous jobs = 3 (Miscellaneous).
3. Checked, Limit the max simultaneous jobs to the available cores (Miscellaneous).
4. public_smtp_relay_delay = 301. (Tweak, at default; but I don't use email for books).
5. email set to a gmail account (Sharing/email, assume smtp delay can be < 301 without problems?)
6. Exclude calibre libraries from antivirus scans.
7. Don't exclude calibre.app package from antivirus scans (—should I exclude it?)
8. Don't exclude calibre config directory from antivirus scans (—should I exclude it?)

Are there any significant performance settings I missed? Is there anything I can do to maximize calibre performance without sacrificing the ability to run other applications' processes at the same time?