How to configure scheduled memory release in Linux?

You can use cron scheduled tasks on Linux system to free up memory. You can create a script to release memory regularly and have cron run it on a schedule.

Here is a simple example script that can free up memory on a Linux system.

#!/bin/bash

# Free memory by clearing the page cache
sync && echo 3 > /proc/sys/vm/drop_caches

# Free memory by clearing the dentries and inodes
sync && echo 2 > /proc/sys/vm/drop_caches

# Free memory by clearing all caches
sync && echo 1 > /proc/sys/vm/drop_caches

echo "Memory freed"

You can save the script above as a file named free_memory.sh and make it executable by using the command chmod +x free_memory.sh.

Next, you can use cron to schedule the execution of this script. Open a terminal and run the crontab -e command to edit the cron job. Add the following line to the file to configure the daily scheduled memory release:

0 0 * * * /path/to/free_memory.sh

The command above indicates that the script /path/to/free_memory.sh will be executed at midnight (0 o’clock) every day to release memory. You can adjust the cron expression to schedule the script execution according to your own needs.

After saving and closing the file, cron will run the script at the specified time to free up memory on a scheduled basis.