[clue] website is faster

[dennisjperkins at comcast.net]

I don't know if it is Xen. Is there a quick way to find out? I'm guessing there is probably a kernel module. 

----- Original Message ----- 
From: "chris fedde" <chris at fedde.us> 
To: "CLUE's mailing list" <clue at cluedenver.org> 
Sent: Wednesday, May 18, 2011 12:22:02 PM 
Subject: Re: [clue] website is faster 

This is a Xen VM? Top shows high IO wait when processing the first 
GET in the webpage. How is disk provisioned for this system? vmstat 
does show high swap and block IO when performing the main page GET as 
well as high IO wait consistent with the results from top. 

On Wed, May 18, 2011 at 9:32 AM, Dan Kulinski <daniel at kulinski.net> wrote: 
> vmstat would show swap hits also, if swap is enabled on the server. 
> 
> Dan Kulinski 
> 
> On Wed, May 18, 2011 at 9:26 AM, Brandon Allhands <brandon at toolking.com> 
> wrote: 
>> 
>> You guys might want to take a look at an opcode cache as well, such as 
>> php-apc. It's super easy to configure and makes a huge difference on CMS 
>> type installs like Drupal, due to the constant class loading they do. 
>> Do you guys have full shell access? Sounds like you do, since you are 
>> talking about top. free -m will show how much actual memory is in use, vs 
>> buffers. If a simple page load is causing swap to be hit, that is definitely 
>> the source of your slowdown. How much RAM does this server have? 
>> I have been on this list for a while, lurking. You guys have just hit on 
>> my forte, which is web application hosting, so I am chiming in :) 
>> If you guys trust access to a relatively new person on this list, I can 
>> send you my public ssh key and poke around. If not, I am more than willing 
>> to offer advice. 
>> Brandon 
> 
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