求助，安装mongo 3.0.4 后，运行mongo命令后提示如下，一头雾水啊，不知可有哪位大侠遇到过同样问题，肯请指点一二，如何处理其中的警告问题，不胜感谢
Server has startup warnings:
2015-04-29T18:03:17.544+0800 I STORAGE [initandlisten]
2015-04-29T18:03:17.544+0800 I STORAGE [initandlisten] ** WARNING: Readahead for /var/lib/mongo is set to 4096KB
2015-04-29T18:03:17.544+0800 I STORAGE [initandlisten] ** We suggest setting it to 256KB (512 sectors) or less
2015-04-29T18:03:17.544+0800 I STORAGE [initandlisten] ** http://dochub.mongodb.org/core/readahead
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten]
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten]
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten]
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 4096 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.
2015-04-29T18:03:17.679+0800 I CONTROL [initandlisten]
就是你的一些系统环境参数不是最优 它提醒你最好最好修改一下
可以正常运行，只是有更好的运行方式，信息里面说的很明确了
感谢二位的热心关注，谢谢了！
要如何 修改呢