strace all the php-fpm worker processes.

strace-phpfpm

#!/bin/bash

additional_strace_args="$1"
 
MASTER_PID=$(ps auwx | grep php-fpm | grep 'master process'  | tr -s ' ' | cut -d ' ' -f 2)

mkdir php-fpm-trace

pgrep fpm | while read pid
do
  if [[ $pid != $MASTER_PID ]]; then
    nohup strace -c -p "$pid" $additional_strace_args -o php-fpm-trae/$pid.trc 2>&1 &
  fi
done