Really basic Apache performance tuning: use RAM wisely

• you@box:~$ ab http://yoursite.com/ -c5 -t300 2>&1 > /dev/null & you@box:~$ ps waux | head -n 1 ; ps waux | grep apache2 | grep -v grep USER PID %CPU %MEM VSZ RSS COMMAND www-data 21381 0.1 4.8 221364 86644 /usr/sbin/apache2 -k start www-data 22235 0.3 5.0 222128 90380 /usr/sbin/apache2 -k start www-data 22236 0.1 4.9 223384 88844 /usr/sbin/apache2 -k start www-data 22237 0.1 4.6 222888 83760 /usr/sbin/apache2 -k start www-data 24789 0.1 4.1 222340 73992 /usr/sbin/apache2 -k start

• you@box:~$ ps wwaux | grep pach | grep -v grep | awk '{s+=($6/1024)} END {print (s/NR)" MB"}' 44.0575 MB

• you@box:~$ free -m total used free Mem: 7974 7646 328 -/+ buffers/cache: 3662 4312 Swap: 2047 58 1988