On Raspbian, I have setup a script to run every minute through crontab -e: * * * * * /path/to/php /path/to/script
The script is a temperature logger. It reads the temperature from a sensor and writes the result to a (mysql) database. A couple of times a day it doesn't start the script for about 8 minutes. Then the script is being started all the missing times. For example, the log shows me these times:
There aren't any crons that run around the time the failures occur. What can be the problem and how do I find or fix this?