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'Optimized settings' would refer and be applicable to your system and use of Apache in combination with MySQL. Since we have no idea what and how you use your server it's pretty hard to advice. You could start with posting your current configuration files and tell as much as possible about the use of your website, what it is, what data it processes, the load you have on the server, database setup and use, ... The more in formation you can provide without revealing private information of course, the better we can try to help out.
Your top output shows that convert and mysql are using a lot of CPU, I would expect mysql to use a fair bit, so it's your "convert" that is taking up a fair bit.
I'm assuming that as you say the processor is an i7 that this is a desktop machine rather than a "server", your 1/5/15min loads are over 2, along with a Cpu(s): 46.0%us would suggest that your computer may be under-specified for the application you are running. Have you tried running sar to see your CPU load levels over time? and if so, are they similar.
Your MaxRequestsPerChild 100000 seems high, I usually set mine to around 2000 to cause the child processes to re-cycle quicker.
How many users / page displays are you doing with this server?
Is that using Analytics Real-Time? If so, then your i7 is going to be vastly under-powered.
Originally Posted by agriz
Why webmin is faster and site is slower?
Webmin uses its own built in server rather than apache, as for why your site is slower, you haven't told us anything about your site other than it uses imagemagick scripts, so we don't know what it's doign or supposed to be doing.