No more words, I give up SWVPS, which I used for two years.
The VPS down lasting 3 days. Five tickets, can not solve the problem as quickly as I imaged.
At last, I can use it, but the resource is not stable.
I think the support has problem on them. They tried rebuild VPS, re-mount my VPS, etc. Everything I have to wait 3 or more hours.
Now, I moved to Burst.net. Hope it is better than SwVPS.