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link1st avatar link1st commented on May 18, 2024

短耗时，最长耗时和平均响应时间 是毫秒

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avatar commented on May 18, 2024

好的，如果求网站承受的最大并发数是不是可以用这个公式qps*(平均响应时间/1000) @link1st

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link1st avatar link1st commented on May 18, 2024

一般计算服务器性能都是使用的是 QPS ，而不是并发数 24-如何计算压测指标

并发指一个处理器同时处理多个任务的能力(逻辑上处理的能力)，与 CPU 调度有关，一般不作为性能指标

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avatar commented on May 18, 2024

但是访问不同的接口qps不同，我怎么能够算出平均的qps值 ，或者怎么估算能代表这个网站的qps值@link1st

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link1st avatar link1st commented on May 18, 2024

可以利用 nginx access日志，所有的请求地址、请求时间都被记录下来了，这样就能算出总的请求量，然后可以按 公式: ( 总PV数80% ) / ( 每天的秒数20% ) = 峰值时间每秒钟请求数(QPS) 计算

如果知道请求峰值在哪个时间段，可以查询这个时间点的总的请求量进行计算QPS~

nginx access日志 参考

114.252.52.208 - - [03/Nov/2019:12:35:23 +0800] "GET /user/list HTTP/1.1" 200 59 "http://im.91vh.com/home/index" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.70 Safari/537.36"

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