Determine information about Pi?

[sim_tcr]

Code: Select all

<?php
echo '</pre><strong>CPU Utilization:</strong><pre>' . shell_exec('ps -e -o pcpu | tail -n +2 | sed \'{:q;N;s/\n/ + /g;t q}\' | bc') . "%";
?>

-Jamie M.

still appears.
1.2
%

[toysareforboys]

still appears.
1.2
%

In looking at my code on my site, I see I had to strip \n and \r from the string to get the % onto the same line. My super crappy php code:

Code: Select all

<?php
$total_cpu = 'ps -e -o pcpu | tail -n +2 | sed \'{:q;N;s/\n/ + /g;t q}\' | bc';
$total_cpu_num = shell_exec($total_cpu);
$total_cpu_num = str_replace(array("\r", "\n", '/\s+/'), '', $total_cpu_num);
echo $total_cpu_num . "%";
?>

That should work

-Jamie M.

[sim_tcr]

still appears.
1.2
%

In looking at my code on my site, I see I had to strip \n and \r from the string to get the % onto the same line. My super crappy php code:

Code: Select all

<?php
$total_cpu = 'ps -e -o pcpu | tail -n +2 | sed \'{:q;N;s/\n/ + /g;t q}\' | bc';
$total_cpu_num = shell_exec($total_cpu);
$total_cpu_num = str_replace(array("\r", "\n", '/\s+/'), '', $total_cpu_num);
echo $total_cpu_num . "%";
?>

That should work

-Jamie M.

That worked.
Here is my page http://raspisimon.no-ip.org/status.php
Wish you all Merry X'mas.

[toysareforboys]

That worked.
Here is my page http://raspisimon.no-ip.org/status.php
Wish you all Merry X'mas.

Love the page, looks great!

I'm also working on some dynamically updating stuff for my page, instead of refreshing the entire page It works SOOO much better that way!

Right now it only works by clicking the "stop" button, it should update the uptime, meminfo and cpu load (but not chart) dynamically after that. Click stop2 to stop it. To get it going again, refresh the page and click stop

I'll be working on it lots tonight so maybe it'll be different by the time you load it: http://tafb.yi.org

Have a great christmas and new years

-Jamie M.

[sim_tcr]

I'll be working on it lots tonight so maybe it'll be different by the time you load it: http://tafb.yi.org

I see the new changes, it looks awsome, especially the CPU load progress bar. Do you mind sharing the source code of whole thing?

[toysareforboys]

I see the new changes, it looks awsome, especially the CPU load progress bar. Do you mind sharing the source code of whole thing?

I'm glad you like the changes My new page is built on Arch linux and not the Pi, but it should still function reasonably well on it (even under Wheezy)

I'm afraid to show anyone my super terrible PHP coding so maybe once I clean it up a bit!!

Some information for ya:

The fancy shiny percentage bars that change colour when the values get high were provided by this site: http://0.s3.envato.com/files/2526201/index.html

To dynamically update them so they are "live" I just jquery with <div> tags and how it works is basically all of the values are written every second (using wget) to a file with the <div> tags around each value, and it reads those and spits em into the current html page where the corresponding <div> tags are

Here is how to calculate the CPU load with PHP, but remember, this only calculates "user" load, i.e. service and programs you are running, not "system" load

Code: Select all

<?php
$total_cpu = 'ps -e -o pcpu | tail -n +2 | sed \'{:q;N;s/\n/ + /g;t q}\' | bc';
$total_cpu_num = shell_exec($total_cpu);
$total_cpu_num = str_replace(array("\r", "\n", '/\s+/'), '', $total_cpu_num);
echo $total_cpu_num ;
?>

I'll post in here when/if I'm ready to release my tweaked page

-Jamie M.