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Under what circumstances does a multithread solutions using multiple kernal threads provide better performance than a single thread solution on a single processor system?
Wiki User
∙ 13y ago
When a kernel thread suffers a page fault, another kernel thread can be switched in to use the interleaving time in a useful manner. A single-threaded process, on the other hand, will not be capable of
performing useful work when a page fault takes place. Therefore, in scenarios where a program might suffer from frequent page faults or has to wait for other system events, a multi-threaded solution would
perform better even on a single-processor system.
Wiki User
∙ 10y ago
Wiki User
∙ 13y ago. The one-to-one model allows for greater concurrency, but the developer has to be careful not to create too many threads (and in some cases may be limited to the number of threads they can create). The many-to-many model suffers from neither of these shortcomings: developers can create as many user threads as necessary, and the corresponding kernel threads can run in parallel on a multiprocessor.
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