发现 2 个 linux 下的开源 RAM Cache 软件， rapidcache & vmtouch， 推荐&求助; 另大家还有其它推荐的么？

rapidcache: block level
http://www.rapiddisk.org/

vmtouch: file level
http://hoytech.com/vmtouch/
https://github.com/hoytech/vmtouch

rapiddisk wiki 还推荐了其它 ram disk/cache: http://www.rapiddisk.org/?incsub_wiki=rapiddisk

目前在测 RapidCache(rapiddisk 里的一个功能)：

The RapidDisk collection is officially supported on the following operating system distributions:
Red Hat
CentOS
Ubuntu Server
openSUSE

HP 也用：
HP presented RapidDisk / RapidCache as part of a demo in the High Performance Computing and Open Source & Linux Technical Excellence Symposium 2014 with performance benchmarks as high as 40 Gigabytes per second! The presentation was titled: Addressing Database Performance problems using the HP Enigma RAM Storage Solution and was presented in Grenoble, France.


测试了下，没成功。。。有用过或者有兴趣&测试成功的 V 有来分享下么~~
（不像打错字的样子。。。这个项目 09 or 11 年就开始了 google 了下貌似也没找到同样的 error 。。。）





另大家还有其它推荐的么？