最近几天在看mongodb相关的部署，
看到官网上有个提示关闭atime 

于是google 了一下， 找到了一些信息： 

http://www.howtoforge.com/reducing-disk-io-by-mounting-partitions-with-noatime

http://linux.koolsolutions.com/2009/01/30/installing-linux-on-usb-part-4-noatime-and-relatime-mount-options/

http://blog.sina.com.cn/s/blog_3cf5fcde0100besp.html



设置就比较简单了： 
vi  /etc/fstab  
加上noatime,nodiratime 选项 重启主机，
LABEL=/1                /                       ext3    defaults        1 1
LABEL=/data1            /data                   ext3    defaults,noatime,nodiratime        1 2
LABEL=/home             /home                   ext3    defaults        1 2
LABEL=/var              /var                    ext3    defaults        1 2
LABEL=/usr              /usr                    ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
LABEL=SWAP-sda2         swap                    swap    defaults        0 0
/dev/sdb1               /data1                  ext3    defaults        1 2