On the other hand, using synchronization inappropriately or excessively can lead to other problems, such as poor performance and deadlock.

另一方面，不当或过度地使用同步会导致其它问题，比如性能很差和死锁。

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There are several classic deadlock and synchronization problems the student must understand in order to begin to reason about creating secure, efficient operating systems.

为了开始创建安全、有效的操作系统，学生必须了解许多经典的死锁和同步问题。

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