Gentoo HHVM scripts

This repository contains some useful scripts, meant to be used together with HHVM from our overlay on Gentoo Linux.

Currently there are two scripts:

• check_and_start_hhvm.sh - checks that HHVM instance(s) are running and if not, starts them.
• restart_hhvm.sh - HHVM restart script, with retry support.

Recommended practice is to add them to crontab and check for HHVM status each minute and always restart HHVM periodically, because it is known that HHVM currently is not optimized for a long runs (Facebook restarts all instances multiple times per day).

Crontab example (for root user), assuming you have two instaces of HHVM, called hhvm.9000 and hhvm.9001, running on the same server:

0       7,19    *       *       *       /usr/sbin/restart_hhvm.sh 9000 1200 | grep -v "\[ ok \]"
0       8,20    *       *       *       /usr/sbin/restart_hhvm.sh 9001 1200 | grep -v "\[ ok \]"
*       *       *       *       *       /usr/sbin/check_and_start_hhvm.sh 9000
*       *       *       *       *       /usr/sbin/check_and_start_hhvm.sh 9001