性能测试过程中部分指标关联总结

最近在整理一些文档,和看一些数据的时候发现一些基础知识久了不运用就会忘记,整理一下。

1、事物响应时间和虚拟用户数关联:当随着用户数的增加,响应时间应该随着上下波动,但是如果事物相应时间有严重波动需要分析问题所在处

2、每秒错误数:如果在某个时间段内错误数量增加,那么需要观看此时间段的其他指标变化

3、平均事物响应时间:平均事物响应时间随着时间、用户数的波动而波动,如果在某个时间段响应时间变慢但是马上又变快了,说明可能是服务器处理能力强,也可能是处理能力差出现大量错误。如果没波动取平均响应时间,如果波动大取90percent time

4、每秒通过事务数:tps越高说明系统处理能力强,主要看走势图。如果出现平缓那么服务器可能出问题了,如果在某个时间段内 失败事物数增加,成功事物数减少说明系统瓶颈有问题

5、每秒点击数:(1、和平均事物响应时间):如果点击数减少,请求变少,但是响应时间却增加,或者是请求数量增加但是响应时间变少,可能是网络问题。

(2、和吞吐量):如果点击数增多,流量肯定该增大,如果点击数增多,但是吞吐量减少等不正常,有可能是服务器处理能力降低造成的。

(3、每秒点击数和每秒事物数):如果hps和tps的曲线出现平缓或者平坦,服务器响应时间增加,如果请求减少,而通过的事物数增加,或者请求数量增加而通过事物数减少那么服务器存在瓶颈

6、吞吐量:如果吞吐量比较平 那么宽带有瓶颈,吞吐量和tps图基本一致,如果平了说明网络瓶颈了。

7、每秒http响应数:一般都是和hps关联,如果客户端发送了n请求,但是http却不够,说明服务器无法应答

8、连接数(connection):每个时间点打开的tcp/ip的连接数

9、每秒连接数(connection per second):方便了解每秒对服务器产生的连接数,如果同时连接数越多,那么说明服务器的连接池越大,如果随着负载增加,而连接数停止时那么连接池已满,这时会反回504

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