No environment can predict how their application will perform under load without performing some load testing in the Performance Test environment.

如果不在性能测试环境中进行某些加载测试，则没有任何一种环境能够预测加载时应用程序的行为。

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It's also important to perform extensive load testing under a full load to verify that there is no system or performance degradation over time.

在满负荷下执行广泛的负载测试，验证一段时间内没有系统和性能降低也很重要。

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With this knowledge and the ease of use of Rational Performance Tester, load testing a Web application will no longer be a burdensome chore, and you can include it for each iteration of your software.

根据这一知识以及Rational Performance Tester的使用的便捷性，负载测试一个Web应用程序不再是一项繁重的重担，您能够将其包含在软件的每一次迭代中。

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These fund companies almost always have higher fees and worse net performance than no-load funds.

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The easy choice here is the Vanguard Health Care Fund, a no-load with low expenses and a superb performance record: 16% a year since inception in 1984.

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Berry likes the similar Eaton Vance Floating-Rate Fund, yielding 1.9% after expenses of 1.8%, for its "steady performance and proven management" and the no-load Fidelity Floating Rate High Income Fund, which is returning 2.9% after expenses of 0.9%.

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