HTML5 Storage – Odd Performance Numbers
I've been working on a GWT application that makes use of HTML5 local storage to persist state between loads. The target for right now is the iPad and the two webkit browsers -- Chrome and Safari.
I wasn't all that happy with the speed of the local hash storage, so I decided to test out the db versus hash performance. First off was writing. After coding up a quick benchmark and storing 20,000 key-value pairs in both the hash and a db table, I had some really odd numbers:
- Mobile Webkit (on the iPad): 0.96 seconds for the hash, 1.24 seconds for the database
- Chrome 5.0 (Mac): 18.39 (!!) seconds for the hash, 0.31 seconds for the database
- Safari 5.0 (Mac): 0.05 seconds for the hash, 0.17 seconds for the database