What slows a site down?
 

I have noticed my site has gotten slower over the last few days. I contacted my host and they said they installed something which should boost performance. Then told me it could be on my end. I am on a private server which should be pretty quick, so i am wondering what sloes a site down?

Could be too many bots hitting it at the same time. There are a lot of bad ones out there

I would think on a private server it still shouldn't be that slow? Usually just shows around 30-40 users? Is there a way to speed it up? Mod, addon ect...

Private server? Do you mean dedicated, not shared?

If you are on a dedicated server, you most likely will have the ability to access the server logs. Take a look a peak times and then examine the logs at that point. It is useful to grab a log analyzer to parse through the data.

Do you have root access? Are you on a VPS or shared?

Test it here on many browsers, many connections, and it goves you tips and tricks on how to improve:

http://webpagetest.org

Your host's call center agents - their first and only job is to blame YOU. Keep that in mind.

Here's today's, just ran:

It timed out on Chrome here, your vBShout locked it up: http://www.webpagetest.org/result/13...3KF/1/details/

Firefox, timed out too: http://www.webpagetest.org/result/131023_8K_13MZ/

Here's a completed waterfall: http://www.webpagetest.org/result/13...etails/cached/

Have you tried these yet
https://vborg.vbsupport.ru/showthrea...=259302&page=4
https://vborg.vbsupport.ru/showthread.php?t=284816
They do help

Yes VPS server, i dont know too much of how to use that wole control panel.

Yes i have VPS and i have access to root.

I have not. Both or just 1?

You have many problems Mods won't address. You can learn ALOT from the webpagetest dot org site.

So what does that mean? Need to change something?