The swap node describing virtual memory (swap) usage on the server is presented by complex type swapStatType (plesk_server.xsd). The node is structured as follows:

• The total node is required. It returns the total amount of swap (in bytes) configured on the server. Data type: size (common.xsd).
• The used node is required. It returns the amount of swap (in bytes) being used by different processes on the server. Data type: size (common.xsd).
• The free node is required. It returns the amount of free swap (in bytes) available on the server. Data type: size (common.xsd).

The part of the response packet returning swap usage statistics may look as follows:

<swap>
   <total>419430400</total>
   <used>327544832</used>
   <free>91885568</free>
</swap>