Hah,
I found the problem. It's because vmstat when called always,
initially has the cpu idle at 99. This explains it. So, how would I go
abouts returning used cpu time on a system?
Thanks,
Paul
Paul A. Procacci wrote:
> Hey all,
> I'm trying not to cache a page. I have the following code:
>
> $return = split(" ", exec("vmstat"));
> $cpu_top = 100;
> $return = $cpu_top - $return[count($return) -1];
>
> which returns the amount of idle cpu time. The problem is this, every
> time the page is loaded, it always show the first value when the page
> was first loaded. I tried adding :
>
> header("Cache-Control: no-store, no-cache, must-revalidate");
> header("Cache-Control: post-check=0, pre-check=0", false);
> header("Pragma: no-cache");
>
>
> all randomly, and together, but nothing seems to work. I can run one
> of my binaries in a forever loop causing the cpu not ever to be idle,
> but still nothing. Help?
>
> Thanks in advance,
> Paul
>
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