降低性能

• This check is intentionally left out of the design because it could degrade performance , especially if the inheritance tree is large
  这种检查被有意地留在了设计之外，因为它会降低性能，特别是当继承树比较大的时候。
• It is also best to place event log calls in an error path in the code rather than in the main code path , so as not to reduce performance
  另外，最好将事件日志调用放在代码中的错误路径而非主代码路径中，以免降低性能。
• In sql server 2005 , the auto close process is asynchronous ; repeatedly opening and closing the database no longer reduces performance
  在sql server 2005中， auto _ close进程为异步进程；反复打开和关闭数据库不会降低性能。
• Adding locks to create thread - safe code decreases performance , increases lock contention , and creates the possibility for deadlocks to occur
  通过添加锁来创建线程安全的代码的做法会降低性能、加剧锁争夺，并且可能导致出现死锁。
• Securing distributed applications poses a problem that is difficult to overcome without resorting to measures that degrade performance
  加强分布式应用程序的安全给我们带来一个难题，如不求助于将会降低性能的手段，很难将其克服。
• When you decide whether to load assemblies as domain - neutral , you must make a tradeoff between reducing memory use and other performance factors
  当您决定是否以非特定于域的形式加载程序集时，必须在减少内存占用和降低性能之间加以权衡。
• Additionally , page postbacks introduce processing overhead that can decrease performance and force the user to wait for the page to be processed and re - created
  此外，页回发会导致处理开销，这会降低性能，且会让用户不得不等待处理并重新创建页。
• Furthermore , if static data are synchronized , calls between static methods that alter state can result in deadlocks or redundant synchronization , adversely affecting performance
  此外，如果同步静态数据，更改状态的静态方法间的调用可导致死锁或冗余同步，从而降低性能。
• A condition in which the system operates at reduced levels of service . these circumstances are usually caused by unavailability of various equipment units or subsystems
  系统降低性能而继续运行的一种状态。这种情况往往是由于设备的某些部分或某些子系统不能继续使用而引起的。