uptime load stats

I know that uptime displays user info and process information for the last minuite, five and fifteen.

But what does the process information really mean?

18:46:18 up 7:03, 3 users, load average: 0.28, 0.36, 0.40

I'm trying to use my web server to (almost) capacity before buying another and I'm wondering how much more I can use it based on these numbers.

Any help is greatly appreciated.

Those last three numbers are the average number of processes in the run queue for three past times.

Meaning they are waiting for the CPU, usually because an I/O operation has completed.

The numbers I see don't seem to be a big problem. Most production systems have numbers approaching or slightly above 1.0, maening they are running near capacity.

There are three resources that limit performance: cpu, memory, and I/O. I/O is almost always the first place to look for problems. Your results do not show a cpu problem.

Are you experiencing performance problems?