| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Total_swap |
The total amount of swap space configured for this host |
MB
|
|
| Available_swap |
The amount of swap space currently unused or available |
MB |
|
| Pct_swap_available |
The percentage of the unused or available swap memory |
Percent |
A very low value indicates that the swap space configured may not be sufficient. A value close to 100% may imply that the swap space configured may be too large. |
| Real_memory |
The total amount of real/physical memory installed on this host |
MB |
|
| Available_real_memory |
The amount of real/physical memory currently unused or available |
MB |
|
| Free_memory |
The total amount of memory free or available for use on this host |
MB |
A very low value of free memory is also an indication of high memory utilization on a host. |
| Shared_memory |
The total amount of real or virtual memory currently allocated for use as shared memory |
MB |
|
| Buffer_memory |
The total amount of real or virtual memory currently allocated for use as memory buffers |
MB |
|
| Cached_memory |
The total amount of real or virtual memory currently allocated for use as cached memory |
MB |
|