Performance apache bench中连接、处理和等待的定义
当我运行apache bench时,会得到如下结果:Performance apache bench中连接、处理和等待的定义,performance,apache,benchmarking,Performance,Apache,Benchmarking,当我运行apache bench时,会得到如下结果: Command: abs.exe -v 3 -n 10 -c 1 https://mysite Connection Times (ms) min mean[+/-sd] median max Connect: 203 213 8.1 219 219 Processing: 78 177 88.1 172 359 Waiting: 78 16
Command: abs.exe -v 3 -n 10 -c 1 https://mysite
Connection Times (ms)
min mean[+/-sd] median max
Connect: 203 213 8.1 219 219
Processing: 78 177 88.1 172 359
Waiting: 78 169 84.6 156 344
Total: 281 389 86.7 391 564
我似乎找不到连接、处理和等待的定义。这些数字是什么意思?来自:
连接和等待时间
建立连接并获取响应的第一位所需的时间量
处理时间
服务器响应时间,即服务器处理请求和发送回复所用的时间
总时间
连接和处理时间的总和
我把这等同于:
- 连接时间:套接字打开所用的时间
- 处理时间:第一字节+传输
- 等待:到第一个字节的时间
- 总计:连接+处理的总和
总计:从连接之前到连接关闭之后通过查看源代码,我们发现以下计时点:
apr_time_t start, /* Start of connection */
connect, /* Connected, start writing */
endwrite, /* Request written */
beginread, /* First byte of input */
done; /* Connection closed */
当请求完成时,一些计时存储为:
s->starttime = c->start;
s->ctime = ap_max(0, c->connect - c->start);
s->time = ap_max(0, c->done - c->start);
s->waittime = ap_max(0, c->beginread - c->endwrite);
“处理时间”随后计算为
s->time - s->ctime;
因此,如果我们将其转化为时间线:
t1: Start of connection
t2: Connected, start writing
t3: Request written
t4: First byte of input
t5: Connection closed
那么定义将是:
Connect: t1-t2 Most typically the network latency
Processing: t2-t5 Time to receive full response after connection was opened
Waiting: t3-t4 Time-to-first-byte after the request was sent
Total time: t1-t5
我认为处理时间包括等待时间,否则总时间将是连接+等待+处理。最好的答案在这里。非常感谢。apache bench源代码托管在哪里?我甚至在apache的开源列表中也找不到它。太好了!非常感谢。让我称你为伟大的逆转者!