php程序执行返回时间过长的原因
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php程序执行返回时间过长的原因
关闭xdebug
开发环境我们经常需要调试,因此xdebug我们经常开启,但是线上的环境,我们一定要关闭xdebug。在打开xdebug的时候,我们的程序返回时间平均在200ms以上,可以说非常的慢,但是当我们关掉xdebug的时候,你会发现,平均响应时间会缩短到10ms左右,可以说进20倍的提升,因此线上环境,一定要关闭xdebug,一定要关闭xdebug,一定要关闭xdebug。
mysql的读效率不低
使用redis
ab -n 10000 -c 10000 http://testredis.com/
Concurrency Level: 10000
Time taken for tests: 23.533 seconds
Complete requests: 10000
Failed requests: 5941
(Connect: 0, Receive: 0, Length: 5941, Exceptions: 0)
Total transferred: 2274395 bytes
HTML transferred: 644395 bytes
Requests per second: 424.94 [#/sec] (mean)
Time per request: 23532.568 [ms] (mean)
Time per request: 2.353 [ms] (mean, across all concurrent requests)
Transfer rate: 94.38 [Kbytes/sec] received
使用mysql
ab -n 10000 -c 10000 http://testredis.com/
Concurrency Level: 10000
Time taken for tests: 19.323 seconds
Complete requests: 10000
Failed requests: 122
(Connect: 0, Receive: 0, Length: 122, Exceptions: 0)
Total transferred: 2006710 bytes
HTML transferred: 376710 bytes
Requests per second: 517.52 [#/sec] (mean)
Time per request: 19322.764 [ms] (mean)
Time per request: 1.932 [ms] (mean, across all concurrent requests)
Transfer rate: 101.42 [Kbytes/sec] received
从上面可以看出,mysql的读请求RPS并不弱于redis
写请求更适合redis
ab -n 10000 -c 10000 http://testredis.com/
redis写请求
Concurrency Level: 10000
Time taken for tests: 18.337 seconds
Complete requests: 10000
Failed requests: 1910
(Connect: 0, Receive: 0, Length: 1910, Exceptions: 0)
Total transferred: 1834820 bytes
HTML transferred: 204820 bytes
Requests per second: 545.34 [#/sec] (mean)
Time per request: 18337.051 [ms] (mean)
Time per request: 1.834 [ms] (mean, across all concurrent requests)
Transfer rate: 97.72 [Kbytes/sec] received
mysql写请求
Concurrency Level: 10000
Time taken for tests: 19.141 seconds
Complete requests: 10000
Failed requests: 18
(Connect: 0, Receive: 0, Length: 18, Exceptions: 0)
Total transferred: 1641638 bytes
HTML transferred: 11638 bytes
Requests per second: 522.45 [#/sec] (mean)
Time per request: 19140.566 [ms] (mean)
Time per request: 1.914 [ms] (mean, across all concurrent requests)
Transfer rate: 83.76 [Kbytes/sec] received
使用常驻内存
如果每次请求之后资源都销毁,自然会降低响应速度,因此,可以使用swoole 扩展来进行常驻内存,这样的话,将大大提升rps。
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