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apache 基准测试时有趣的数字

tag-icon • tag-icon apache-httpd testing
apache 基准测试时有趣的数字 
[root@NOTEBOOK ~] time for i in 128 321; do sleep 302; ab -n $i -c $i https://EXAMPLE.COM/ 2>/dev/null | egrep '^Complete requests:|^Failed requests:|^Requests per second:|^Time taken for tests:'; echo '______________________'; done
Time taken for tests:   87.538 seconds
Complete requests:      128
Failed requests:        0
Requests per second:    1.46 [#/sec] (mean)
______________________
Time taken for tests:   58.507 seconds
Complete requests:      321
Failed requests:        490
Requests per second:    5.49 [#/sec] (mean)
______________________

问：怎么可能失败的请求>完成的请求？

ps：需要“睡眠302”，因为不知何故，如果我做太多ab，那么输出将100％失败。

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