重点关注这样的服务水平性能指标：能够帮助预测构建复合应用程序时的端到端响应时间和计划服务器容量。
Insist on service level performance metrics which help predict the end-to-end response times and capacity planning of servers when the composite application is built. Look at the other aspects like.
换句话说，识别出瓶颈之后，就可以判断对基础结构规模评估最重要的性能指标——速度和容量。
In other words, once you identify the bottleneck, you can then determine the performance metrics that are key to sizing the infrastructure — the "how fast" and "how many."
性能测试可以和容量测试以及压力测试并行地完成，这是因为你想在所有的载入条件下都到达性能指标。
Performance testing can be accomplished in parallel with Volume and stress testing because you want to assess performance under all load conditions.
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