Topic: My suddenly very slow! Need Help!

[vietravel247.com]

My site hosting at hostgator, suddenly loading very slow in some days. With this error: [01-Mar-2012 20:40:21] PHP Warning: mysql_real_escape_string() expects parameter 2 to be resource, boolean given in /Sources/Subs-Db-mysql.php on line 132. And some time have this error:

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@hoidulich.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache Server at hoidulich.com Port 80

my site is hoidulich.com
Thank you very much.

[Doctor Deejay]

Perhaps this will help: http://www.simplemachines.org/community/index.php?topic=293441.0 Also, what version are you using?

[vietravel247.com]

Perhaps this will help: http://www.simplemachines.org/community/index.php?topic=293441.0 Also, what version are you using?

Thank for your support, I have done some tip from that but it still slow. My site is smf version 2.0.2 (update from 2.0.1).
Regards.

[Illori]

hostgator is a known overseller, find a non-oversold host and your problems will go away.

[vietravel247.com]

hostgator is a known overseller, find a non-oversold host and your problems will go away.

Thank you for your support, I'll do that.
Regards,

[vietravel247.com]

I moved my site to vinahost with VPS: 756MB RAM, 10GB HDD but it still slow and have 500 error. What can I do now?
Regards

[Illori]

check your server logs to find out what the 500 error is, and why it is happening.

[baobei123]

Thank for your support, I have done some tip from that but it still slow.

[Tristan Perry]

I moved my site to vinahost with VPS: 756MB RAM, 10GB HDD but it still slow and have 500 error. What can I do now?
Regards

That looks like a good package - your forums (assuming it's the one in your OP, http://hoidulich.com/) isn't huge so that VPS should be big enough.

500 errors can be permission issues - have you checked that the CHMOD and chown attributes are correct? (Start with the CHMOD/file permission attributes). Also do you have e.g. Frontpage support enabled with PHP?

Regarding the slowness - have you logged into root when things are slow? If so, what's the server loads? If not: next time things are slow, type "top" (without the double quotes) and then copy and paste the output into this post. Hopefully the top output will help us.