Re: efficiency improvements
Ok, after some analysis, and corresponding with the system administrator of
that server, I think I've figured it out: starting about 00:30 EST, several update/backup
etc. jobs are started on that server, with high priority (!)(meaning they push other
stuff out of the way instead of running only when the server is available).
The administrator reasoned that "00:30 is in the middle of the night anyway, so
no-one is using the system". Never mind that there are 180+ sites hosted on that
server, being used all over the world...
I'm looking into either getting him to set things up in a better way, or move to a single
"VPS" server.
For the interested, here's the load graph of the morning of March 27: