Apache2, cpu usage and ports

eQualizer · 03-01-2006, 05:22 AM

Top gives me this:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
30553 www-data 25 0 13612 5224 3448 R 13.5 2.0 77:45.89 apache2
30552 www-data 25 0 13612 5224 3448 R 13.2 2.0 77:46.59 apache2
30555 www-data 25 0 13612 5224 3448 R 13.2 2.0 77:45.98 apache2
30554 www-data 25 0 13612 5308 3492 R 12.9 2.1 77:47.38 apache2
30556 www-data 25 0 13612 5224 3448 R 11.2 2.0 77:45.87 apache2
13732 www-data 25 0 13612 5312 3492 R 9.9 2.1 14:34.08 apache2

That's a bit high cpu usage, isn't it? And why there's so many processes of Apache2?
Is it normal? How do I decrease the cpu usage?

And, how do I make it listen to more than one port? I know I need to edit ports.cfg, but there's only "Listen xxxx", where's xxxx is the port it listens to.

Or should I switch back to Apache 1.3something? :f

Oh yeah, and system specs are:
128Mt ram
520Mhz Pentium3
Some NVIDIA Riva TNT2 gpu
Ubuntu 5.10

stormrider_may · 03-01-2006, 05:49 AM

Usually this happens when someone is trying to access an heavy php script or when you have some heavy traffic sites.

There are so many process of apache 2 because it works like this know. Those are child process, they are responsible for respoding to the requests on your server.

Yes, it´s normal.

You can decrease cpu usage reducing the number of process apache creates (watch out, if you have lots of clients accessing your server, it can become inacessible for some of them)

Serious, apache2 is a low resource web server. I use it on a pentium 166 and it only gets 100% of cpu usage when i run a php script.

To listen to other ports, put something like this:

Code:

Listen 80
Listen 81
Listen 8080

Restart the server, ok?

I don´t think you should switch. Probaly someday apache 1.3 won´t be supported anymore and if someone finds a bug it won´t be corrected.