Re: CakePHP high CPU utilization

I'd be curious to know what your apache logs are reporting during a high utilization period...  Obviously, it isn't google indexing your empty view over and over, but there might be something interesting.

Matt Murphy

On Sat, Oct 23, 2010 at 1:49 PM, airween <airween@gmail.com> wrote:

Hello Cake Users,

I'm new in Cake - exactly I'm not a Cake user/developer, I'm a system
administrator.

System is a LAMP enviroment, hardware is a HP DL380, with two CPU,
every CPU has 2 cores.

I've a site since few weeks ago - since then the CPU utilization isn't
above 100%, but usually over 200%.

I've created a controller, which does "nothing": it contains just a
simple index() method, which's empty. Also I configured the routes,
and when I get the URL:

http://mysite/foo

the default layout rendered, which has a header and a footer.

I tested this controller on an another HW, which has 8 core; the
client was ab (apache benchmark), and until the test I've monitored
the system:

sar -P ALL 1 1000

(client: ab -n 100 -c 100  http://mysite/foo)

Until the test sar reported this values:

19.27.17        CPU     %user     %nice   %system   %iowait
%steal     %idle
19.27.18        all     88,38      0,00     10,88      0,00
0,00      0,75
19.27.18          0     89,00      0,00      9,00      0,00
0,00      2,00
19.27.18          1     83,00      0,00     17,00      0,00
0,00      0,00
19.27.18          2     91,00      0,00      9,00      0,00
0,00      0,00
19.27.18          3     90,00      0,00     10,00      0,00
0,00      0,00
19.27.18          4     90,10      0,00      9,90      0,00
0,00      0,00
19.27.18          5     86,87      0,00     13,13      0,00
0,00      0,00
19.27.18          6     91,00      0,00      9,00      0,00
0,00      0,00
19.27.18          7     87,00      0,00     10,00      0,00
0,00      3,00

When test has finished, the %user has gone 0,00, and %idle about 99,9%
again.

On that machine another MVC frameworks and another sites (CMS's)
(which uses Codeigniter, Drupal...) I _can't_ create this effect.

I don't use .htaccess.

Cake version is 1.2.8, I downloaded it today.

What could be the problem?


Thank you:


a.

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