ab benchmark hello world php

1: Requests per second:    1582.00 [#/sec] (mean)
2: Requests per second:    5650.92 [#/sec] (mean)
3: Requests per second:    6058.32 [#/sec] (mean)
4: Requests per second:    6813.98 [#/sec] (mean)
5: Requests per second:    7783.12 [#/sec] (mean)
6: Requests per second:    8987.17 [#/sec] (mean)
7: Requests per second:    10428.20 [#/sec] (mean)
8: Requests per second:    11345.91 [#/sec] (mean)
9: Requests per second:    12836.78 [#/sec] (mean)
10: Requests per second:    14834.44 [#/sec] (mean)
11: Requests per second:    19318.46 [#/sec] (mean)
12: Requests per second:    19723.72 [#/sec] (mean)
13: Requests per second:    20499.96 [#/sec] (mean)
14: Requests per second:    22811.37 [#/sec] (mean)
15: Requests per second:    21765.40 [#/sec] (mean)
16: Requests per second:    24051.14 [#/sec] (mean)
17: Requests per second:    24286.59 [#/sec] (mean)
18: Requests per second:    24718.30 [#/sec] (mean)
19: Requests per second:    24844.18 [#/sec] (mean)
20: Requests per second:    24880.44 [#/sec] (mean)
40: Requests per second:    25186.82 [#/sec] (mean)
60: Requests per second:    24323.94 [#/sec] (mean)
80: Requests per second:    24155.21 [#/sec] (mean)
100: Requests per second:    24336.87 [#/sec] (mean)
120: Requests per second:    24014.79 [#/sec] (mean)
140: Requests per second:    23564.24 [#/sec] (mean)
160: Requests per second:    23893.13 [#/sec] (mean)
180: Requests per second:    23000.16 [#/sec] (mean)
200: Requests per second:    23886.82 [#/sec] (mean)
300: Requests per second:    23944.81 [#/sec] (mean)
400: 500: 600: Requests per second:    24013.54 [#/sec] (mean)
700: Requests per second:    23946.10 [#/sec] (mean)
800: Requests per second:    24051.57 [#/sec] (mean)
900: Requests per second:    23961.39 [#/sec] (mean)
1000: Requests per second:    23687.44 [#/sec] (mean)