MongoDB Restricted Memory method

1. Create a control group (make sure cgroups binaries is installed)

Cgcreate-g Memory:mongolimitgroup

If error Cgcreate:libcgroup initialization failed:cgroup is not mounted.

Start Cgconfig Services: Service Cgconfig start
2. Set the specific available memory in general B units

echo 1610612736 >/sys/fs/cgroup/memory/mongolimitgroup/memory.limit_in_bytes

3. Use the following command to leave the deleted page in the cache

Sync Echo 3 >/proc/sys/vm/drop_caches

4. Assigning services to the created control group

Cgclassify-g Memory:mongolimitgroup Mongod_pid

5. Detect if the settings are effective

Free-m

MongoDB Restricted Memory method