Number of CPUs using PHP?

[Shekar]

Is there a class/module/function in PHP that will help me identify the
number of CPUs on a system?
php_uname() does not provide that information. Though I can execute a
system command, I do not have a
consistent method that will work across platforms like Linux, SunOS,
AIX, HP-UX and Windows*

Thanks
Shekar

[Andy Hassall]

Re: Number of CPUs using PHP?

On Thu, 19 Jul 2007 09:08:55 -0700, Shekar <shekariyer@gma il.comwrote:

>Is there a class/module/function in PHP that will help me identify the
>number of CPUs on a system?
>php_uname() does not provide that information. Though I can execute a
>system command, I do not have a
>consistent method that will work across platforms like Linux, SunOS,
>AIX, HP-UX and Windows*

Not that I'm aware of, and I can't spot anything on PEAR - it's not the sort
of information you need very often. So you'll probably have to use php_uname
and then branch out to OS-specific methods (/proc/cpuinfo etc.)

You may also run into the definition of what is one CPU - multi-core and
hyperthreading cloud the issue, resulting in widely varying per-CPU licensing
terms for various commmercial products. Is this what you want the information
for?

--
Andy Hassall :: andy@andyh.co.u k :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool

[Shekar]

Re: Number of CPUs using PHP?

I want to find the number of CPUs to guage the capacity of the system
and spawn
parallel executions to maximize CPU usage. Thanks anyway.

[Tim Roberts]

Re: Number of CPUs using PHP?

Shekar <shekariyer@gma il.comwrote:

>I want to find the number of CPUs to guage the capacity of the system
>and spawn parallel executions to maximize CPU usage.

Interesting. How would you expect to do that in PHP?
--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.