Calculate average memory consumption of php-fpm processes

Here is one liner which gives you average memory consumption of php-fpm processes.

 ps --no-headers -o "rss,cmd" -C "php-fpm" |  awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'

If you have more pools, you can grep for specific pool and get average for that one:

 ps --no-headers -o "rss,cmd" -C "php-fpm" | grep <mypool2> |  awk '{ sum+=$1 } END { printf ("%d%s\n", sum/NR/1024,"M") }'

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