On Wednesday, September 21, 2016 01:47:28 PM Grant wrote: > >> 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.) -- :wq
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