iOS: Deserializing JSON in separate thread?

I am currently using the TouchJSON library in my iOS app. I currently deserialize JSON on the main thread and this seems to work well. The Earthquakes XML example in the iOS Developer Library demonstrates XML parsing on a secondary thread and I'm wondering开发者_StackOverflow if this would be a good idea for deserialization from JSON as well? My JSON objects are small so it seems unnecessary. What do you think?

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It should be possible, however, start the performance tuning only if you need it. So many sins have been commited in the name of perfomance optimization!

Have a look at Comparison of JSON Parser for Objective-C (JSON Framework, YAJL, TouchJSON, etc) for some discussion about performance of the various frameworks.

Here's a review about the performance of the different frameworks, also linked in the Q&A I posted above: