What threading pratice is good 90% of the time? [closed]

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What practice or practices are good 90% of the time when working with threading with multiple cores?

Personally all i have done w开发者_运维问答as share immutable classes and pass (copy) data to a queue to the destine thread.

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This is very vague - but there are a few basic precepts I'd always follow:

1. Make sure threading makes sense before you implement it
2. Focus on algorithms, not individual lines of code when designing for threading
3. Thread at the highest level possible
4. Prefer immutable data
5. Synchronize data access appropriately
6. Prefer high level threading libraries over low level, hand written threading code
7. Measure (make sure 1. was true!)