cPanel loads very slowly

[Yaksha]

I'm having issues loading cPanel and pages within cPanel. They take a long time to load, about two minutes per page.

The webpages on the server are fine, they load in a matter of seconds. I'm on cable, so it's not a problem with my internet.

A few things load quickly, like the MySQL management and phpMyAdmin. But a lot of other things, especially when I'm adding/editing/deleted go very very slowly.

If anyone has any ideas on what I can check, I'd appreciate it. Thanks!

 

[AndyReed]

restart stunnel and then cpanel. If that doesn't work, PM us: servertune (yahoo, MSN, AIM) or send us an email note: [email protected]

 

[Yaksha]

Sorry to sound dumb, but where do I restart stunnel and cpanel at? I can't find an option for that in WHM ...

 

[mher]

login to shell and type:
# service cpanel stop
wait for 10 seconds then type:
# service cpanel start

or you can type:
# reboot

 

[Yaksha]

OK, restarting cPanel didn't speed up the loading time.

OK, so the only pages that load slowly are the main page, and pages that load when I click to submit a form. So when I try and add on or park a domain, create a subdomain, etc. Those all take about two minutes to load.

 

[richy]

What's the current server load?

 

[Yaksha]

Not much. When I go to Show CPU usage, the total is only about 2% of the CPU and memory is around 10% Any other place I should check?

 

[Yaksha]

I'm still having this issue, can anyone suggest anything else?

 

[LP-Trel]

Update the resolvers in /etc/resolv.conf

Look http://tweakgeek.com/node/23 for a list of DNS servers you can use.

If the server load is low and everything seems to be right, this is usually the cause.

 

[Yaksha]

None of those seemed to affect cPanel at all. Was I supposed to do something after changing the file? Reboot Apache or the server or something?

 

[casey]

Are you on a vps?

 

[Yaksha]

What's a vps?

I'm on a vds - Virtual Dedicated Server.

 

[casey]

What's a vps?

I'm on a vds - Virtual Dedicated Server.

Same thing. Your DC probably needs to tweak some settings. How much RAM do you have?

 

[Yaksha]

It has 512MB.

 

[dezignguy]

That sounds like way too little for a VPS. ;-)
Most recommend a minimum of 1GB for a server running VPS's.... but really at least 2GB is what you need because of the overhead from the VPS instances.

 

[Yaksha]

I just checked again and that's what I have. There's even another plan where you only get 256MB ...

 

[dezignguy]

sounds like they're cheaping out on the ram. ;-)

512mb of ram is going to be mostly used by the os itself, not to mention all the VPS's or VDS's which duplicate the os in memory... so that means that anything else that runs is going to be using swap space, which is much slower and will just thrash the harddrive.
So that could likely be your speed problem. What is your IOWait usage at?
I'm fairly sure that the VDS's are kept totally separate, loading separate instances of the OS into memory for each VDS, so those cpu load stats are probably only for your usage... not the whole server, so someone else (probably multiple people) could likely be using up most of the rest of the cpu, or, more likely, doing some heavy disk IO (all using swap space of course).

 

[Yaksha]

Thanks for the suggestions

Where can I check my IOWait usage?

I just wanted to add that every webpage loads fine, downloads are fine (we host some large file size videos and download speeds of 500k+ are not uncommon). It's just the main page for cPanel that's slow.

If I click to go into the MySQL section, it loads fine, instantly. phpMyAdmin loads every page in less than a second. If I'm adding e-mail forwarders, or browsing my files in the File Manager, it all goes fine, nice and quick. Web/FTP stats are fine.

The only places I've found that go really slow are when I load the front page for cPanel, and when I try to add a Parked Domain, Addon Domain, or create a subdomain.

 

[Yaksha]

I am still experiencing slowness, can anyone help?

 

[BenThomas]

Make sure that /usr/local/apache/conf/httpd.conf looks OK. Specifically, make sure that there are no redundant entries, no odd characters (you haven't been editing that file on a Windows system have you?), or anything out of the ordinary.