# Script/Runner **URL:** \ **Category:** Rails\ **Created:** [October 28, 2008, 11:05pm UTC](https://www.ruby-forum.com/t/script-runner/152010 "2008-10-28T23:05:01Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![hypnos](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/8797f3/32.png) [@hypnos](https://www.ruby-forum.com/u/hypnos)\ **Post date:** [October 28, 2008, 11:05pm UTC](https://www.ruby-forum.com/t/script-runner/152010/1 "2008-10-28T23:05:01Z")
I have a production site that has a couple of batch jobs, I have used script/runner and cron to run these jobs. This works ok for jobs that only run once overnight during off peak. I am expiring sessions older than 30 mins every 15 mins using script/runner, but I’m concerned about the hit of script/runner loading up the whole rails environment, specifically since I only have a 256MB slice, at such regular intervals. What is a more efficient way of clearing down these sessions (using AR store btw). Any help is appreciated Thanks ---
**Author:** ![hypnos](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/8797f3/32.png) [@hypnos](https://www.ruby-forum.com/u/hypnos)\ **Post date:** [October 28, 2008, 11:24pm UTC](https://www.ruby-forum.com/t/script-runner/152010/2 "2008-10-28T23:24:43Z")
On 28 Pa¼, 23:05, Oliver Nightingale \ wrote: > store btw). > > Any help is appreciated Have you checked what is consuming the memory? The environment should take about 60mb (not 100% about that). From my experience most memory consuming operations are related with creating objects from find(:all, …) queries. Can you change the ActiveRecord find into raw sql queries and compare results? I remember case with my code - memory usage jumped from 600mb do 180mb after changing find(:all, …) into sql. The other thing is the script/runner - I don’t know if it will make any difference but you could try with rake task’s instead of script/ runner. cheers