如何使用keep-alive解决apachebench中失败的长度请求？
我正在使用带有保持活动状态的ab工具测试剩余服务，摘要显示一半的请求由于长度而失败。
如果我在没有kepp-alive的情况下对其进行测试，则表明所有请求均已成功，但吞吐量降低到前一个请求的3/4。
用于通过keep-alive运行测试的命令：
`ab -t 120 -n 2 -c 1 -p postfile.txt -T application/json -k http://localhost:8001/profile`
摘要：
`Concurrency Level: 1
Time taken for tests: 0.005 seconds
Complete requests: 2
Failed requests: 1
(Connect: 0, Receive: 0, Length: 1, Exceptions: 0)
Keep-Alive requests: 1
Total transferred: 1012 bytes
Total body sent: 1908
HTML transferred: 607 bytes
Requests per second: 424.27 [#/sec] (mean)
Time per request: 2.357 [ms] (mean)
Time per request: 2.357 [ms] (mean, across all concurrent requests)
Transfer rate: 209.65 [Kbytes/sec] received
395.27 kb/s sent
604.91 kb/s total`
用于在没有保持活动状态的情况下运行测试的命令：
`ab -t 120 -n 2 -c 1 -p postfile.txt -T application/json -k http://localhost:8001/profile`
摘要：
`Concurrency Level: 1
Time taken for tests: 0.009 seconds
Complete requests: 2
Failed requests: 0
Total transferred: 1976 bytes
Total body sent: 1860
HTML transferred: 1214 bytes
Requests per second: 223.64 [#/sec] (mean)
Time per request: 4.471 [ms] (mean)
Time per request: 4.471 [ms] (mean, across all concurrent requests)
Transfer rate: 215.78 [Kbytes/sec] received
203.11 kb/s sent
418.89 kb/s total`
我在终点启用了日志打印。然后我看到只打印了一个日志，而不是2。这意味着只有一半的请求到达了终点。选项-l只是从摘要中隐藏故障，即，使用-l选项时，我只能看到一张日志。
我希望所有请求都应得到处理。如何解决这个问题？如果使用选项-v 5，则看不到失败的正确原因。 Atleast如何查看失败的原因是什么？