[clue] website is faster

[Brandon Allhands]

uname -a will generally show if it's running a xen modified kernel.


On May 18, 2011, at 2:05 PM, dennisjperkins at comcast.net wrote:

> 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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> >
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Brandon Allhands
IT Manager
brandon at toolking.com
1.800.696.TOOL
ToolKing.com
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