<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 12pt; color: #000000'>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.<br><br>----- Original Message -----<br>From: "chris fedde" <chris@fedde.us><br>To: "CLUE's mailing list" <clue@cluedenver.org><br>Sent: Wednesday, May 18, 2011 12:22:02 PM<br>Subject: Re: [clue] website is faster<br><br>This is a Xen VM? Top shows high IO wait when processing the first<br>GET in the webpage. How is disk provisioned for this system? vmstat<br>does show high swap and block IO when performing the main page GET as<br>well as high IO wait consistent with the results from top.<br><br>On Wed, May 18, 2011 at 9:32 AM, Dan Kulinski <daniel@kulinski.net> wrote:<br>> vmstat would show swap hits also, if swap is enabled on the server.<br>><br>> Dan Kulinski<br>><br>> On Wed, May 18, 2011 at 9:26 AM, Brandon Allhands <brandon@toolking.com><br>> wrote:<br>>><br>>> You guys might want to take a look at an opcode cache as well, such as<br>>> php-apc. It's super easy to configure and makes a huge difference on CMS<br>>> type installs like Drupal, due to the constant class loading they do.<br>>> Do you guys have full shell access? Sounds like you do, since you are<br>>> talking about top. free -m will show how much actual memory is in use, vs<br>>> buffers. If a simple page load is causing swap to be hit, that is definitely<br>>> the source of your slowdown. How much RAM does this server have?<br>>> I have been on this list for a while, lurking. You guys have just hit on<br>>> my forte, which is web application hosting, so I am chiming in :)<br>>> If you guys trust access to a relatively new person on this list, I can<br>>> send you my public ssh key and poke around. If not, I am more than willing<br>>> to offer advice.<br>>> Brandon<br>><br>> _______________________________________________<br>> clue mailing list<br>> clue@cluedenver.org<br>> http://cluedenver.org/mailman/listinfo/clue<br>><br>_______________________________________________<br>clue mailing list<br>clue@cluedenver.org<br>http://cluedenver.org/mailman/listinfo/clue<br></div></body></html>