This jobs run all time and consuming 25% cpu power each
In your crontab entry, you can specify how often the cron is running. Maybe try running it less frequently.
crontab -e # you see a file # run cron only every 15 minutes */15 * * * * sh /path/to/magento/cron.sh
Additionally, look in the MySQL
cron_schedule table. There you can see every job that is scheduled, and how long it takes to execute. Perhaps a particular job is taking longer than you would expect.
This issue has been resolved in the latest version 2.2.6
upgrade to 2.2.6 or above latest stable version
Here is the reference link: