cron_clearpages.md

Setting up cron to clear page cache periodically

This is usefull for ImageNet training when it loads a ton of images which are kept in page memory until training starts to lag.

Assume we are on Ubuntu.

First, create a cron job from root:

sudo crontab -e

And add this lines:

*/15 * * * * date >> /root/cronlog.txt && sync && /sbin/sysctl -w vm.drop_caches=3

Yes, keeping the empty line in the end. This will clear pages every 15 minutes.

Resources:

1. http://askubuntu.com/questions/155768/how-do-i-clean-or-disable-the-memory-cache

THANK YOU!!!!!! I have been struggling with this for about an year!