http://bin.cakephp.org/
2010/10/24 Ervin Hegedüs <airween@gmail.com>:
> Hello Matt,
>
>> No need to play with maxclients yet... You shouldn't have any, right? :)
> yes, I just didn't know what about thinking are you.
>
>> By something interesting, I was referring to bullshit URLs being hit by
>> russian (or chinese or whatever) robots attempting to crack your apache
>> install or somesuch.
>
> probably no.
> As I described, the test environment of that app, where I measured
> these values, doesn't has too much load - in point of fact, that
> apache isn't used by anything...
>
>> IMHO, your problem isn't going to have anything to do with cake. It's
>> going to be an illicit client
> what are you thinking about? Could you explain that?
>
>> or a buggy version of something *actually*
>> executable.
> eg apache, php?
>
> The productiv and test systems are differs, productiv is an older (apache, php).
>
>> The reason I say this is that PHP has a per script memory use
>> limit. Either you have many illicit clients eating up no more than 32 (or
>> 64, whatever) MB per illicit URI (unlikely -- if this is the scenario,
>> they're most likely taking up only a few hundred K per thread because your
>> view is bare) or you have something executable installed that has a memory
>> leak or some such silliness.
>
> ok, but when I tested same ab with another test site of the test
> system, I _can't_ reproduce this effect - only just (this) Cake.
> (There is no another Cake app on that system.)
>
>> Read your logs (read more logs). Take cake out of your web tree and see
>> what happens to utilization. Take a look at the per-process memory usage
>> (i'm a little rusty on this stuff or I'd say what to use, but I'm currently
>> an *ex* developer/administrator).
>
> I don't knwo what have I look :)
>
> Scenario:
> - new controller with empty method
> - router contains this method
> - empty method renders default layout
> - testing empty method with ab
> - until 2-3 seconds when test runs, CPU usage is near 90% on all core.
>
> CPU usage also near 80-90% when I pointing ab to another
> controller/method, but only just this application.
>
>
> I would like to know, how can I find the part of code, which generates
> and sends to the client the default layout.
>
>
> Thanks:
>
>
> a.
>
>>
>> Matt Murphy
>>
>> On Sun, Oct 24, 2010 at 7:43 AM, Ervin Hegedüs <airween@gmail.com> wrote:
>>>
>>> Hello Matt,
>>>
>>> thanks for the reply,
>>>
>>> On Sun, Oct 24, 2010 at 1:26 PM, Matt Murphy <mattyhead@gmail.com> wrote:
>>> > I'd be curious to know what your apache logs are reporting during a high
>>> > utilization period...
>>>
>>> nothing... there are just client querys, nothing else.
>>> May be do you think about "increasing maxclients", but no - currently
>>> maxclients is 150, and I've tested with 100 client with ab.
>>>
>>> > Obviously, it isn't google indexing your empty view
>>> > over and over, but there might be something interesting.
>>>
>>> yes, but what is that?
>>>
>>> I'm suspecting to the rendering code of default layout - but I'm new
>>> in cake and don't have any free time to debug that code...
>>>
>>> How can I find that part of Cake (config, rendering...)?
>>>
>>>
>>> Thank you:
>>>
>>>
>>> a.
>>> > 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.
>>> >>
>>> >> Check out the new CakePHP Questions site http://cakeqs.org and help
>>> >> others
>>> >> with their CakePHP related questions.
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>>
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>
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