I have switched from regular shared hosting to a virtual private server (vps). While there has been a pretty steep learning curve, the company I'm using has been really helpful. I have lived through more than a couple of shared hosting nightmares and I so want this vps solution to work for me. I am hosting 3 OCS conferences on my VPS right now and I have been very unhappy with the load times. I have one other OCS conference running on a dedicated server at a university and it is 5-10 times faster than the sites on my VPS. I have worked with tech support to try to isolate the problem(s) - allocated more memory, moved the MySQL server to a dedicated box, added another CPU core, etc. I am at a loss. I do not want to find another host, but if I can't get these OCS sites running faster, then I will have to move after these conferences are finished.
Has anyone experienced any similar issues?
Here I will contrast the fast site and one of the slow sites
Fast site: http://www.imrf.info/2010
Dedicated server, not too much traffic
Apache/2.0.54 (Mandriva Linux/PREFORK-13.3.20060mdk)
Slow site: http://www.csbbcs.org/2010
Apache/2.2.11 (FreeBSD) mod_ssl/2.2.11 OpenSSL/0.9.8e DAV/2 PHP/5.2.8 with Suhosin-Patch
I realize that everything is different about these two sites, but I am hoping that someone can spot something that might be causing my problems. I had come across a few places where people said that they had speed issues with various PHP web apps after upgrading to MySQL 5, but I couldn't find any suggested fixes that sounded promising.