如何限制mongodb启动时占用过多内存

Starting in 3.4, the WiredTiger internal cache, by default, will use the larger of either:

50% of RAM minus 1 GB, or

256 MB.

storage:

  dbPath: /var/lib/mongodb

  journal:

    enabled: true

#  engine:

  mmapv1:

    smallFiles: true

  wiredTiger:

    engineConfig:

      configString : cache_size=160M

mongod -f /etc/mongod.conf --fork --logpath=/etc/mongodb.log