将负载加到最大，直到服务器运行中止，这样做可以发现系统的性能极限。
Load testing to the point of breaking the server(s) lets you know the performance envelope of you systems.
飞机飞行手册(afm)，包合性能极限，操作极限，操作程序，起飞和着陆性能等资料的法定文件。
AIRPLANE FLIGHT MANUAL (AFM), The legal document containing performance and operating limits, operating procedures, and takeoff and landing performance.
有了性能极限图，加上对服务器工作负载增长趋势的跟踪，就可以在出现重大危机之前升级服务器，轻松赢得这场战争。
Armed with performance envelope graphs, combined with tracking your server workload growth trends, you can win the battle for upgrading a server before there is a major crisis.
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