Running response time tests on php code - how much is 7.2E-5 microseconds?

Posted by Ali on Stack Overflow See other posts from Stack Overflow or by Ali
Published on 2010-03-31T16:01:24Z Indexed on 2010/03/31 16:03 UTC
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php

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load-testing

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response-time

Hi guys I'm using microtime() function of php to tell how long certain snippets of code take to run I do this by taking the time before and after the snippet and subtracting them using microtime function.

I got the following results though for the different snippets:

1 -  0.022976

2 -  0.003656

3 - -0.196361

4-   0.006563

5-   7.2E-5

6-   0.847695

7-   0.005092

8-   7.6E-5

9-   0.08024

The first numbers represent the snippt and the following the time taken... I've forgotten whatever I learnt back in College on numerical methods :( - how big is 7.2E-5 microseconds?

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