average apache process mem usage

ps -H h -ylC httpd | perl -lane '$s+=$F[7];$i++;END{printf"Avg=%.1fMB\n",$s/$i/1024}' 

ps -H h -ylC apache2 | perl -lane '$s+=$F[7];$i++;END{printf"Avg=%.1fMB\n",$s/$i/1024}' 

highest process mem usage cd

ps -H h -ylC httpd | awk 'function max(x){i=0;for(val in x){if(i<=x[val]){i=x[val];}}return i;}function min(x){i=max(x);for(val in x){if(i>x[val]){i=x[val];}}return i;}/^#/{next}{a[$8]=$8;next}END{minimum=min(a);maximum=max(a);print "Max = "maximum / 1024 "MB";print "Min = "minimum / 1024"MB"}' 

ps -H h -ylC apache2 | awk 'function max(x){i=0;for(val in x){if(i<=x[val]){i=x[val];}}return i;}function min(x){i=max(x);for(val in x){if(i>x[val]){i=x[val];}}return i;}/^#/{next}{a[$8]=$8;next}END{minimum=min(a);maximum=max(a);print "Max = "maximum / 1024 "MB";print "Min = "minimum / 1024"MB"}'

php-fpm – www pool average

for pid in $(ps aux | grep fpm | grep "pool www" | awk '{print $2}'); do pmap -d $pid | tail -1 ; done | sed 's/K//' | awk '{sum+=$4} END {print sum/NR/1024}'

php-fpm – ALL active pools average memory

Ubuntu: cd /etc/php5/fpm/pool.d
Centos: cd /etc/php-fpm.d/

for pool in `ls *.conf` ; do POOL="`echo $pool | sed 's/\.conf//'`" ; echo -e "\n$POOL" ; for pid in $(ps aux | grep fpm | grep "pool $POOL" | awk '{print $2}'); do pmap -d $pid | tail -1 ; done | sed 's/K//' | awk '{sum+=$4} END {print sum/NR/1024}' ;  done

MANUAL CHECKS (understanding)

# ps aux | grep apache2 (or httpd)

USER       PID %CPU PerformanceOptimized %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND

-> RSS is the real memory value
-> VSZ is the one that it might reach (important mostly for MySQL)

# Quicker way is to do top and than press ‘>’