Traffic- how much is too much
It looks like it is hitting a brick wall limit of around 47MB/sec (which is pretty fast, if you ask me). Is that a bunch of bandwidth?
FWIW- I rebooted the Linode in the middle of this (at the first dip)- I don't know what my server was serving, but even though it was a bit slow, it kept going.~~
That is a lot of bandwidth, especially if you don't know why. You'll have to figure out what it is doing and why before we can tell you if that is a lot. If it is doing what it is supposed to be doing, it's sort of up to you to decide what is "too much"
A tool like iftop while the problem is happening can tell you what connection is using the bandwidth, or what process/port. Otherwise, check your web server log files.
du -sh /home/*
(or wherever you store web files) to see if there are any especially large files capable of using large amounts of bandwidth quickly.
Then search through the access_log files in /var/log/httpd/. If you aren't logging, the best you can do it at this point is start (
If it's a sudden spike, it's likely not just simply an organic traffic surge for low-volume content that would just disappear the next day.