在进程列表中多次显示相同的脚本文件

Question

I have a PHP script which runs on a cron every 10 minutes - when the script finishes it seems to still remain in the running processes until a restart.

For example if I run

ps aux | grep -i scriptName

I get

root       684  0.2  0.0 383884 23188 ?        Ss   Feb27   0:07 /usr/bin/php -q /path/to/scriptName
root       846  0.9  0.0 383880 23124 ?        Ss   Feb27   4:39 /usr/bin/php -q /path/to/scriptName
root       925  0.5  0.0 383868 23136 ?        Ss   Feb27   1:39 /usr/bin/php -q /path/to/scriptName
root      1524  0.2  0.0 383884 23176 ?        Ss   Feb27   0:07 /usr/bin/php -q /path/to/scriptName
root      1632  0.6  0.0 383868 23132 ?        Ss   Feb27   1:45 /usr/bin/php -q /path/to/scriptName
root      1750  0.9  0.0 383880 23116 ?        Ss   Feb27   4:32 /usr/bin/php -q /path/to/scriptName
root      2172  0.2  0.0 383884 23184 ?        Ss   Feb27   0:06 /usr/bin/php -q /path/to/scriptName
root      2289  0.5  0.0 383868 23140 ?        Ss   Feb27   1:33 /usr/bin/php -q /path/to/scriptName

How can I get these to clean up once they have run?

I have other scripts which run on cron which do not seem to do this - this is the only one which does.

At the moment there are 100 of these running and I am worried they are going to cause a resource hit and cause issues or a performance problem.