Hi all,
I've been running some time trials on some of my PHP functions for a site
I've been putting together, and noticed that the process time is SOMETIMES
extremely high.
Before I continue, let me say that I know that the times can be affected by
other things running on the server, but the results are always the same no
matter how many times I run it.
In the following example, which is the one that I'm concerned about, the
same function is called multiple times in a row (with nothing happening in
between calls) for different "categories". Basically, the function sorts an
array and outputs the 10 elements with the highest value.
I ran the test several times, calling the function hundreds of times with
the same data, and each time I ran the test every second call took thousands
of times longer than the ones that ran ok.
The results of the benchmark test (first 100):
function SimpleList => 10.228178024292 seconds MAX, 0.0024620294570923
seconds MIN
SimpleList item 1 took 0.0047399997711182 seconds
SimpleList item 2 took 4.8834660053253 seconds
SimpleList item 3 took 0.0026209354400635 seconds
SimpleList item 4 took 1.6767669916153 seconds
SimpleList item 5 took 0.0025150775909424 seconds
SimpleList item 6 took 3.5071390867233 seconds
SimpleList item 7 took 0.0066210031509399 seconds
SimpleList item 8 took 1.8121999502182 seconds
SimpleList item 9 took 0.0025880336761475 seconds
SimpleList item 10 took 10.228178024292 seconds
SimpleList item 11 took 0.0026429891586304 seconds
SimpleList item 12 took 1.3569248914719 seconds
SimpleList item 13 took 0.0026519298553467 seconds
SimpleList item 14 took 1.5246760845184 seconds
SimpleList item 15 took 0.047821998596191 seconds
SimpleList item 16 took 2.1210349798203 seconds
SimpleList item 17 took 0.0025339126586914 seconds
SimpleList item 18 took 2.7077790498734 seconds
SimpleList item 19 took 0.0024960041046143 seconds
SimpleList item 20 took 1.8957049846649 seconds
SimpleList item 21 took 0.0056090354919434 seconds
SimpleList item 22 took 1.3942409753799 seconds
SimpleList item 23 took 0.0032639503479004 seconds
SimpleList item 24 took 2.5071721076965 seconds
SimpleList item 25 took 0.0025739669799805 seconds
SimpleList item 26 took 0.75933194160461 seconds
SimpleList item 27 took 0.0025299787521362 seconds
SimpleList item 28 took 1.3230199813843 seconds
SimpleList item 29 took 0.0025479793548584 seconds
SimpleList item 30 took 1.5940990447998 seconds
SimpleList item 31 took 0.002769947052002 seconds
SimpleList item 32 took 1.6990089416504 seconds
SimpleList item 33 took 0.0025010108947754 seconds
SimpleList item 34 took 1.4948740005493 seconds
SimpleList item 35 took 0.0025290250778198 seconds
SimpleList item 36 took 1.3077820539474 seconds
SimpleList item 37 took 0.0027199983596802 seconds
SimpleList item 38 took 2.3882880210876 seconds
SimpleList item 39 took 0.023046970367432 seconds
SimpleList item 40 took 0.88547909259796 seconds
SimpleList item 41 took 0.0026249885559082 seconds
SimpleList item 42 took 1.494973897934 seconds
SimpleList item 43 took 0.0025370121002197 seconds
SimpleList item 44 took 1.4878768920898 seconds
SimpleList item 45 took 0.0028669834136963 seconds
SimpleList item 46 took 1.6947749853134 seconds
SimpleList item 47 took 0.0025030374526978 seconds
SimpleList item 48 took 1.3992600440979 seconds
SimpleList item 49 took 0.0062370300292969 seconds
SimpleList item 50 took 2.4599330425262 seconds
SimpleList item 51 took 0.0027350187301636 seconds
SimpleList item 52 took 0.73624801635742 seconds
SimpleList item 53 took 0.0050810575485229 seconds
SimpleList item 54 took 2.2535430192947 seconds
SimpleList item 55 took 0.0036349296569824 seconds
SimpleList item 56 took 1.6462769508362 seconds
SimpleList item 57 took 0.0025260448455811 seconds
SimpleList item 58 took 3.1076270341873 seconds
SimpleList item 59 took 0.0027920007705688 seconds
SimpleList item 60 took 1.5962820053101 seconds
SimpleList item 61 took 0.0025190114974976 seconds
SimpleList item 62 took 1.6848870515823 seconds
SimpleList item 63 took 0.0025689601898193 seconds
SimpleList item 64 took 2.0958459377289 seconds
SimpleList item 65 took 0.0026199817657471 seconds
SimpleList item 66 took 2.2060899734497 seconds
SimpleList item 67 took 0.0070620775222778 seconds
SimpleList item 68 took 2.1034359931946 seconds
SimpleList item 69 took 0.0029339790344238 seconds
SimpleList item 70 took 2.2868009805679 seconds
SimpleList item 71 took 0.0025150775909424 seconds
SimpleList item 72 took 2.9152449369431 seconds
SimpleList item 73 took 0.0030900239944458 seconds
SimpleList item 74 took 2.9968670606613 seconds
SimpleList item 75 took 0.0028420686721802 seconds
SimpleList item 76 took 3.005833029747 seconds
SimpleList item 77 took 0.0052200555801392 seconds
SimpleList item 78 took 1.4939750432968 seconds
SimpleList item 79 took 0.0025509595870972 seconds
SimpleList item 80 took 3.2771420478821 seconds
SimpleList item 81 took 0.0027899742126465 seconds
SimpleList item 82 took 3.0382519960403 seconds
SimpleList item 83 took 0.0025210380554199 seconds
SimpleList item 84 took 1.7047400474548 seconds
SimpleList item 85 took 0.00279700756073 seconds
SimpleList item 86 took 1.4964989423752 seconds
SimpleList item 87 took 0.0025299787521362 seconds
SimpleList item 88 took 1.6868020296097 seconds
SimpleList item 89 took 0.0025640726089478 seconds
SimpleList item 90 took 1.4976640939713 seconds
SimpleList item 91 took 0.0025249719619751 seconds
SimpleList item 92 took 1.4759020805359 seconds
SimpleList item 93 took 0.0032650232315063 seconds
SimpleList item 94 took 1.5173159837723 seconds
SimpleList item 95 took 0.0043590068817139 seconds
SimpleList item 96 took 8.8674029111862 seconds
SimpleList item 97 took 0.0025320053100586 seconds
SimpleList item 98 took 0.9132479429245 seconds
SimpleList item 99 took 0.0026270151138306 seconds
SimpleList item 100 took 1.6772450208664 seconds
Can anyone explain to me why every second call runs so slow? It's obviously
not the data, and seemingly not the PHP code (as the same chunk of code is
being used each time, with the same input/output).
Thanks,
RockMonkey
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