>> >> I haven't mentioned it yet, but several times I've seen the website
>> >> perform fine all day until I browse to it myself and then all of a
>> >> sudden it's super slow for me and my third-party monitor.  WTF???
>> >
>> > I had a similar problems once when routing through a IPsec VPN tunnnel.
>> > I needed to reduce MTU in front of the tunnel to make it work
>> > correctly. But I think your problem is different.
>> I'm not using IPsec or a VPN.
>> > Does the http server backlog on the other side? Do you have performance
>> > graphs for other parts of the system to see them in relation? Maybe
>> > some router on the path doesn't work as expected.
>> I've attached a graph of http response time, CPU usage, and TCP
>> queueing over the past week.  It seems clear from watching top, iotop,
>> and free than my CPU is always the bottleneck on my server.
> I'm going to throw one more tool at you; give atop a try. (htop is nice, too,
> but atop is more powerful.)

I think I got it.  I'll post all the gory details shortly.

- Grant

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