简述性能测试的步骤（请简述性能测试过程应注意的问题和目标）

本文目录一览：

• 1、怎么进行性能测试
• 2、性能测试到底该怎么做？
• 3、性能测试相关概念及流程

怎么进行性能测试

根据百度百科：性能测试是通过自动化的测试工具模拟多种正常、峰值以及异常负载条件来对系统的各项性能指标进行测试。负载测试和压力测试都属于性能测试，两者可以结合进行。通过负载测试，确定在各种工作负载下系统的性能，目标是测试当负载逐渐增加时，系统各项性能指标的变化情况。压力测试是通过确定一个系统的瓶颈或者不能接受的性能点，来获得系统能提供的服务级别的测试。

简述性能测试的步骤（请简述性能测试过程应注意的问题和目标）

简述性能测试的步骤（请简述性能测试过程应注意的问题和目标）

您可试用一些测试平台进行性能测试。

例如优测。优测为企业提供API全生命周期质量解决方案、压力测试、兼容性测试、移动应用自动化测试、WebUI自动化测试等多样化测试产品。

性能测试到底该怎么做？

根据百度百科：性能测试是通过自动化的测试工具模拟多种正常、峰值以及异常负载条件来对系统的各项性能指标进行测试。负载测试和压力测试都属于性能测试，两者可以结合进行。通过负载测试，确定在各种工作负载下系统的性能，目标是测试当负载逐渐增加时，系统各项性能指标的变化情况。压力测试是通过确定一个系统的瓶颈或者不能接受的性能点，来获得系统能提供的服务级别的测试。

您可试用一些测试平台进行性能测试。

例如优测。优测为企业提供API全生命周期质量解决方案、压力测试、兼容性测试、移动应用自动化测试、WebUI自动化测试等多样化测试产品。

根据百度百科，性能测试步骤：

1． 制定目标和分析系统

2． 选择测试度量的方法

3． 学习的相关技术和工具

4． 制定评估标准

5． 设计测试用例

6． 运行测试用例

7． 分析测试结果

您可以了解一下优测，一站式移动云测试服务平台。

性能测试相关概念及流程

根据百度百科：性能测试是通过自动化的测试工具模拟多种正常、峰值以及异常负载条件来对系统的各项性能指标进行测试。负载测试和压力测试都属于性能测试，两者可以结合进行。通过负载测试，确定在各种工作负载下系统的性能，目标是测试当负载逐渐增加时，系统各项性能指标的变化情况。压力测试是通过确定一个系统的瓶颈或者不能接受的性能点，来获得系统能提供的服务级别的测试。

您可试用一些测试平台进行性能测试。

例如优测。优测为企业提供API全生命周期质量解决方案、压力测试、兼容性测试、移动应用自动化测试、WebUI自动化测试等多样化测试产品。

根据百度百科，性能测试步骤：

1． 制定目标和分析系统

2． 选择测试度量的方法

3． 学习的相关技术和工具

4． 制定评估标准

5． 设计测试用例

6． 运行测试用例

7． 分析测试结果

您可以了解一下优测，一站式移动云测试服务平台。

本文整理来自pro Apache jmter web application和Wikipedia

在一定的负载条件下，评估系统或应用的响应时间，吞吐量等相关指标

功能测试通过之后

对系统进行性能评估，并通过测试发现系统瓶颈，分析定位瓶颈发生的原因，协助开发修复性能问题，提高系统的处理能力。对比不同的系统，确认更好的系统。

主要指标： 响应时间、吞吐量、资源利用率。

The time taken by the application to respond to the user’s request is called the response time.Every application should strive to minimize the response time

应用程序响应用户请求所需的时间称之为--响应时间。响应时间越小越好

对于常见的B/S结构的响应时间，如下图：

从用户发起请求，到服务完全完成响应的时间。

用户感知时间，有点预加载的意思。即本来一个页面全部信息同时返回，现在改成优先加载一部分内容

处理时间。处理请求并响应的这段时间。与请求的复杂性、系统的硬件及系统服负载有关。

吞吐量：单位时间内处理的事务个数。通常由transactions/second 或 bandwidth (bytes/second)来衡量。吞吐量越大越好。

资源利用率，不应该超过80%的利用率。利用率越低越好。

Scalability measures how well the can expand its capacity when additional resources are added.Ideally the capacity will increase linearly as additional resources are added. Howr, this is rarely achid in pract. It’s a good measure to know the resources that would be needed so that the can handle the projected future load.Vertical scalability is achid by upgrading the hardware. For example, by adding more memory, disk,

a better CPU, or additional CPUs.Horizontal scalability is achid by adding servers to the cluster. For example, by adding more web

servers and application servers to a webfarm/cluster.

主要有压力测试，负载测试，配置测试等

压力测试是应用程序处于超出负荷状态下长时间运行，以测试的稳定性和性能表现。

A load test is a kind of performance test that’s performed at the specified load ll. So ideally, we would like to perform load tests at varying load lls to note the behior of the application.

在一定的负载条件下，测试应用程序的性能表现。通过不同的负载程度（load lls）,观察应用程序的性能表现来得到的用户数，响应时间以及资源利用率等指标。

A peak load test is performed at the load that the application is expected to handle. For example, e-commerce web sites experience their peak traffic during Black Friday, Cyber Monday, and the Christmas holidays. So a peak load test in this case would test the application within the load specification but at the higher end.

Note stress tests test beyond the peak load.

In a soak test (also called an endurance test), the application is subjected to a specified load that is within the specified limit but for a long duration. It is performed for many hours at a time. This test determines if the application is properly reusing its resources.

This test will suce problems like the following:

Successful web applications experience massive and sometimes exponential growth. So it is wise to measure how the application scales. Scalability is defined as how well the application handles the increase in load while still meeting the desired performance criteria.

A scalability test would increase the resources and test wher or not the application is providing

a corresponding increase in capacity. Ideally, we expect linear scalability (i.e., doubling the hardware resources should result in double the application capacity).

A capacity test is a load test that establishes the maximum load that the application can handle while

meeting the desired performance criteria. The resulting metric is called the maximum capacity. It is used in scaling the application and to estimate costs for future growth.

A spike test is a load test where the application is subjected to brief periods of sudden increment in load, a all fraction beyond the maximum capacity. It is usually done to estimate the weakness/strength of an application. The application is expected to be robust and continue to meet the performance criteria during the spike. This metric is called the burst capacity.

In a performance oke test, a few common and essential use-cases along with use-cases pertaining to the

code subject to change are toger tested for performance. It is only when the oke test succeeds that

the full suite of performance tests are conducted. If the oke test fails, no further performance tests areconducted until the performance defect has been rectified.

Modern web application infrastructure is designed to be highly ailable and resilient to hardware and software failures. Ideally, the architecture should ensure that there is no single point of failure and that there are standby servers that can transparently take over without impacting the user experience.

In this test various equipment and software failures are simulated and relevant performance tests are

run to verify that the application is still meeting the performance criteria.

Rather than testing for performance from a load perspective, tests are created to determine the effects of configuration changes to the 's components on the 's performance and behiour. A common example would be experimenting with different mods of load-balancing