apc is a particularly easy install, and practically zero config (well, six lines) with a potentially enormous performance increase.  Its worth trying again if your hosting company is willing to work through the problem with you.   Another way of looking at it could be that if your hosting company cant configure apc without taking the site down, then perhaps a new host is in order.<br>
<br>steev<br><br><div class="gmail_quote">On Wed, May 13, 2009 at 2:15 PM, Daniel Carrera <span dir="ltr">&lt;<a href="mailto:daniel.carrera@theingots.org">daniel.carrera@theingots.org</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I once asked the web host to install the APC cache and my Drupal site stopped working entirely :-(  I can&#39;t afford to have the site go down at this time. This is the end of the school year, which is the most important time for us.<br>

<br>
I&#39;m really interested in that Boost module that Hans pointed out. I&#39;m just trying to learn more about it right now.<br>
<br>
Daniel.<br>
<br>
Steve Power wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div class="im">
You could try installing apc cache which will reduce the amount of cpu time spent rendering php files, which should have an impact on cpu.  if you have enough RAM.<br>
<br>
steev<br>
<br></div><div class="im">
On Wed, May 13, 2009 at 1:31 PM, KOBA | Hans Rossel &lt;<a href="mailto:hans.rossel@koba.be" target="_blank">hans.rossel@koba.be</a> &lt;mailto:<a href="mailto:hans.rossel@koba.be" target="_blank">hans.rossel@koba.be</a>&gt;&gt; wrote:<br>

<br>
    <a href="http://drupal.org/project/admin_menu" target="_blank">http://drupal.org/project/admin_menu</a><br>
<br>
    it gives you a dropdown menu on top with the ratio, but its actually<br>
    not really neccesary because its again an extra module and you<br>
    probably need less modules. The core &quot;Who&#39;s online&quot; block should<br>
    give you the same data, enable it and make it visibly only for your<br>
    role (make an admin role for yourself if you would not have done<br>
    this yet).<br>
<br>
    Hans<br>
<br>
<br>
<br>
            The building of the cache takes a bit of time and consumes<br>
            CPU also of course. It also all depends whats your ratio of<br>
            logged in and anonymous users (you can see this easily in<br>
            admin menu). If your problem with CPU comes from a lot of<br>
            logged in users<br>
<br>
<br>
        Where can I find this ratio? The best I&#39;ve found is the list of<br>
        top visitors in the past 3 days. It looks like anonymous<br>
        visitors dominate.<br>
<br>
<br>
<br>
<br>
<br>
    --<br>
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<br>
<br>
<br>
<br>
-- <br>
-- <br>
--<br>
Steve Power<br>
Principal Consultant<br>
Mobile: +44 (0) 7747 027 243<br>
Initsix Technology and Media<br>
--<br>
<br>
<br></div>
------------------------------------------------------------------------<div class="im"><br>
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</div></blockquote><div><div></div><div class="h5">
<br>
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