In my experience I've found that QLThumbnailImageCreate() significantly outperforms CGImageSourceCreateThumbnailAtIndex(). I speculate that this is because QLThumbnailImageCreate() talks to a daemon process that keeps thumbnails cached in memory even after your process exits, rather than re-creating thumbnails from disk upon each request.
Consider using the 'purge' command between your tests to get more authentic benchmarks, and perhaps killing the Quick Look daemon. _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
