Until we can find a proper fix for T182832, we need to deal with the deadlocked processes to prevent further service outages.
My proposal, for lack of a better idea, is the following script in a daily cron job:
# adapted from http://snipplr.com/view/46373/kill-gracefully-stuck-startup-of-apache-childs/ apache-status | tail -n +47 | head -n -14 | awk '{print $2,$4}' | grep G | awk '{print $1}' | sort -u | grep "^[0-9]*$" | sort -n | while read -r pida do # for testing purposes, make it a NO-OP command with echo: echo "kill -9 $pida" done