Real Memory 42% vs Virtual @ 99%

The kernel will swap out little-used pages even in the absence of memory pressure. However, in my experience it is unusual for so much swap to be used without memory pressure. It is likely that you have spikes in memory usage that cause things to be swapped out; this may or may not be a real problem.

Overall, you should not really be too concerned by how much swap is used. The more important thing is how many pages are actively being swapped in and out - lots of swapping will slow down your server's responsiveness to users. You can look at this on the swap IO graph in the Linode manager, or by using a tool like vmstat.

Last 30 days looks like this - looks ok to me ?

~~[https://www.dropbox.com/s/yorrx182hjxnrg7/2017-07-1611-36-10.png?dl=0" target="blank">](https://www.dropbox.com/s/yorrx182hjxnr … 0.png?dl=0">https://www.dropbox.com/s/yorrx182hjxnrg7/2017-07-16_11-36-10.png?dl=0](

With an average of 0.00 blocks/sec, you're probably OK.