server performance metrics

[Ilan Berkner]

What's a good metric that I can look at to see whether or not our Nginx
server is performing optimally?

I'm attaching an image showing stats for the past week but I'm not clear on
whether or not they would be considered "good", "ok", "great" or need a lot
of improvement?

Overall we're happy with our performance but some users continue to complain
of page loading times (could be any number of things of course), but I
wanted to send these out and see if there are some things that we should pay
attention to.  These graphs represent normal peak loads on our Nginx server
(we peak M-F, Thursdays being our highest).

Currently we have a single Nginx web server serving all static requests with
multiple php app servers in the back end.

Thanks!
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