[root@restore1 data1]# mongod --dbpath=/data/data1/mongodb_data/  --directoryperdb

** WARNING: You are running this process as the root user, which is not recommended.

** WARNING: You are running on a NUMA machine.

**          We suggest launching mongod like this to avoid performance problems:

**              numactl --interleave=all mongod [other options]

** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

**        We suggest setting it to 'never'

** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

**        We suggest setting it to 'never'

** WARNING: soft rlimits too low. rlimits set to 30000 processes, 65530 files. Number of processes should be at least 32765 : 0.5 times number of files.

[root@restore1 data1]# echo never>/sys/kernel/mm/transparent_hugepage/enabled

[root@restore1 data1]# echo never>/sys/kernel/mm/transparent_hugepage/defrag

[root@restore1 data1]# cat /etc/security/limits.conf

#--------------------------------------------------
#此处经过测试知：只要 nproc * 2【0.5倍的nofile】 >= nofile > 32767【推荐】

* - nproc  65538

* - nofile 65536

#--------------------------------------------------

[root@restore1 data1]# numactl --interleave=all mongod --dbpath=/data/data1/mongodb_data/ --directoryperdb &

[]

[root@restore1 data1]# --12T11::49.699+ I CONTROL  [initandlisten] MongoDB starting : pid= port= dbpath=/data/data1/mongodb_data/ -bit host=restore1

--12T11::49.699+ I CONTROL  [initandlisten] db version v3.2.4

... ...

var cols=db.getCollectionNames();

for (var i=0 ;i<cols.length;i++) { 
　　var n=cols[i]; 
　　var v=db.getCollection(n).count(); 
　　print (n.pad(30,true) + " : " + v); 
}