I am using a Linux CENTOS 6 server with Plesk 10.4.4 Apache and Wowza Media Server 3. The server is a quad core and has 12GB RAM.
WHAT HAPPENED BEFORE
I was having a problem with some Wordpress websites that utilize lots of CPU when running custom CRON jobs, so I looked for ways to make the server faster.
I first installed eAccelerator, and that caused alot of my MYSQL tables to crash and some other problems arose. I uninstalled it and everything went back to normal.
Next, I found people were getting some good results with APC and Memcache, so I installed them after a yum update.
WHATS HAPPENING NOW
All RTMP streamed videos are buffering after playing only a few seconds, but the server load is practically nothing. This was not happening before all those changes.
load average: 0.01, 0.04, 0.06
Here's an example (please see the video in the header section, they rotate each page load): http://activemd.net/index.php
WHAT I DID TO TRY TO FIX IT
I disabled APC and removed memcache.
I am still having the same problem of every video I try to stream. They all buffer after only a few seconds.
Another observation I'll make is that APC and memcache seemed to make my PHP pages load slower. After disabling those modules, they now load faster.
What can I do to stop my videos from buffering?
Could one of the changes I made have affected the way my videos are streaming?
What are some troubleshooting steps I can take to isolate the problem of my videos always buffering?
Any help is much appreciated, Rick