Get optimized PHP-fpm "pm" config

how-to-php-fpm-pm-optimized.md

Prints optimized pm config for your pool php-fpm config

curl -fsSL https://gist.githubusercontent.com/muuvmuuv/7b7a911ddec2172375b75498154ce5e8/raw/2d2bef245f9644dae10f8724f784f3424c4e30a2/php-pm.sh | sh

More here: https://tideways.com/profiler/blog/an-introduction-to-php-fpm-tuning

php-pm.sh

#!/usr/bin/env sh

##
## Calculate optimized `pm` settings for php-fpm
##

clear

echo ""

cpu_cores=$(grep -c ^processor /proc/cpuinfo)
echo "Total Cores    XX ${cpu_cores}"

memory_total_kb=$(grep MemTotal /proc/meminfo | awk '{print $2}')
memory_total_mb=$(expr $memory_total_kb \/ 1000)
echo "Memory total   MB ${memory_total_mb}"

memory_free_kb=$(grep MemFree /proc/meminfo | awk '{print $2}')
memory_free_mb=$(expr $memory_free_kb \/ 1000)
echo "Memory free    MB ${memory_free_mb}"

memory_used_mb=$(expr $memory_total_mb \- $memory_free_mb)
echo "Memory used    MB ${memory_used_mb}"

php_processes=$(ps -o pid,command ax | grep php | awk '{print $1}')
php_processes_count=$(echo "${php_processes}" | awk 'NR == 1 {} END {print NR}')
echo "PHP processes  XX ${php_processes_count}"

php_processes_memory=$(echo "${php_processes}" | xargs -n1 -I {} sh -c "sudo pmap {} | tail -n1 | awk '{print substr(\$2, 1, length(\$2)-1)}'")
average_php_memory_b=$(echo "${php_processes_memory}" | awk 'NR == 1 {sum=0} {sum+=$1;} END {print sum/NR}')

average_php_memory_mb=$(expr $average_php_memory_b \/ 10000)
echo "PHP average    MB ${average_php_memory_mb}"

echo ""

max_children=$(expr $memory_free_mb \/ $average_php_memory_mb)
start_servers=$(expr $cpu_cores \* 4)
spare_servers=$(expr $cpu_cores \* 2)

echo "pm = dynamic"
echo "pm.process_idle_timeout = 6s"
echo "pm.max_children = ${max_children}"
echo "pm.start_servers = ${start_servers}"
echo "pm.min_spare_servers = ${spare_servers}"
echo "pm.max_spare_servers = ${start_servers}"

echo ""