Swap Space
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Swap Space

Linux divides its memory into chunks called pages. The process of copying a page of memory onto a hard disk is called swapping. This is typically on its own partition called swap space.

The benefits of swapping memory pages to disk, is that the total available amount of virtual memory on a system can be increased. Typically inactive applications which aren’t immediately in need of memory will have some of their pages swapped to disk, allowing for active applications to have speedier access to memory.

The downside to swapping is that is much slower than actual RAM and can be thousands of times slower. If too much memory is swapped, it can lead to a slowdown of your system because of excessive read/write operations on the hard disk.

Currently on our Virtual Private Servers, swap space is disabled. However we are looking in to providing virtual swap space, with their own dedicated storage so we can have all the benefits of swap space, with few of the downsides.

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