<?php
function getServerLoad()
{
if (
strtoupper(substr(PHP_OS, 0, 3)) == 'WIN'
) { // Windows
$loadAvg = explode(PHP_EOL, `wmic cpu get loadpercentage`);
return sprintf('%1.2f', $loadAvg[1]);
} else if (
function_exists('exec') AND
$stats = @exec('uptime 2>&1') AND
trim($stats) != '' AND
preg_match('#: ([\d.,]+),?\s+([\d.,]+),?\s+([\d.,]+)$#', $stats, $loadAvg)
) {
return sprintf('%1.2f %1.2f %1.2f', $loadAvg[1], $loadAvg[2], $loadAvg[3]);
} else if (
file_exists('/proc/loadavg') AND
$stats = @file_get_contents('/proc/loadavg') AND
trim($stats) != ''
) {
return $stats;
}
return FALSE; # Load Unobtainable.
}
?>
Getting Load Percent in All Operating Systems.
(12 posts, started )
Getting Load Percent in All Operating Systems.
wow, now that's an example of unreadable code formatting! (I'm quite sure you didn't write this 
)
)Yeah, it's quite compact. I did write this, when I first started out programming. So I think it's safe to say I've become a better programmer since then.
btw, i didn't know about the PHP_OS constant! Using that now for the prism windows detection
I just wanted to point at sys_getloadavg but then I read the Notes... ^^
Well at least you could replace all the non-win stuff by it
Well at least you could replace all the non-win stuff by it
Yeah, I knew I had that some where and I was going to change it in my version but I did not want to tred on your toes. (That and you might be using SHELL as a way to detect if the client is running in Cygwin or not.)
No I don't use the shell variable for anything. Cygwin seemed to behave the same as plain windows, which makes sense because Cygwin isn't a shell, but a collection of programs to present the appearance of linux, on a windows platform. And so far I haven't been interested in any of those programs.
There is also the php_uname() function that could be used I noticed. Lotsa handy function on this page : http://nl3.php.net/manual/en/ref.info.php
There is also the php_uname() function that could be used I noticed. Lotsa handy function on this page : http://nl3.php.net/manual/en/ref.info.php
#8
- bunder9999
this is supposed to be a command to run on windows computers, right? for some reason it's not working on mine...
Really! I was sure WMIC (Windows Management Instrumentation Command) came preinstalled.
Do'h looks like I was wrong!
i wonder if windows load can be detected at all, without special gadgetry. vBulletin has a load sensor as well for example, but only for *nix.
As far as I know, there is no built in way to just get this data. I mean you can poll the data from the Windows API / SDK but you'd have to make the exe yourself.
Don't forget that CPU load on *ix doesn't equate directly to utilisation as windows understands it Load is more to do with how much stuff is waiting rather than how much work the CPU is actually doing, if that makes sense?
However, using the COM extension (http://uk3.php.net/manual/en/book.com.php) you could query the WMI without using exec(), and just barf if the extension isn't loaded (http://uk.php.net/extension_loaded), although most windows versions of PHP should have it by default, unless it's been custom compiled
That'll work fine if you're using a regular user account like you would be with PRISM (well, tested with a w2003 box, I've not got a w2008 box spun up right this second, but I don't see why it wouldn't work - I'm not aware of any changes in the default perms for WMI under that).
However, if you want to run that as your webserver user, unless you're running your webserver with access to the WMI it'll fail like a bastard. For example, using IIS with an anonymous user the WMI root/cimv2 permissions would need the IUSR_MACHINENAME or IUSR account added with remote enable permissions.
There are, naturally, possible security problems in making your webserver able to poke at WMI
Load is more to do with how much stuff is waiting rather than how much work the CPU is actually doing, if that makes sense? However, using the COM extension (http://uk3.php.net/manual/en/book.com.php) you could query the WMI without using exec(), and just barf if the extension isn't loaded (http://uk.php.net/extension_loaded), although most windows versions of PHP should have it by default, unless it's been custom compiled
<?php
$obj = new COM ( 'winmgmts://./root/cimv2' );
$pc = 0;
foreach ( $obj->instancesof ( 'Win32_Processor' ) as $p )
printf("CPU%d @ %d%%", $pc++, $p->LoadPercentage);
?>
That'll work fine if you're using a regular user account like you would be with PRISM (well, tested with a w2003 box, I've not got a w2008 box spun up right this second, but I don't see why it wouldn't work - I'm not aware of any changes in the default perms for WMI under that).
However, if you want to run that as your webserver user, unless you're running your webserver with access to the WMI it'll fail like a bastard. For example, using IIS with an anonymous user the WMI root/cimv2 permissions would need the IUSR_MACHINENAME or IUSR account added with remote enable permissions.
There are, naturally, possible security problems in making your webserver able to poke at WMI
Getting Load Percent in All Operating Systems.
(12 posts, started )
FGED GREDG RDFGDR GSFDG