Thread Programming Performance Tips

• Read is faster than write, when memory content in symmetric mutil-processing(SMP)
• Minimized the cost in locking and synrhronization


• Code based locks
• Data based locks


• Not overhead in lock / unlock
• Trial and error process
• Blocking vs spinning


• Depends on the frequency of request
• Average time the lock
• Spinlocks only on SMP machines
• Own locking primitives better than operating system if waiting time for locks is less than the context switching time of a thread


• Locking


• Not hold locks for long duration
• Not have too fine grained locks
• Not perform blocking operation while holding locks
• Avoid deadlocks

Reference

• CS4282 Internet & Distribution System Program of City University