# `ClusterStatsOperatingSystemMemoryInfo` [interface-ClusterStatsOperatingSystemMemoryInfo]

| Name | Type | Description |
| - | - | - |
| `adjusted_total_in_bytes` | [long](./long.md) | Total amount, in bytes, of memory across all selected nodes, but using the value specified using the `es.total_memory_bytes` system property instead of measured total memory for those nodes where that system property was set. |
| `free_in_bytes` | [long](./long.md) | Amount, in bytes, of free physical memory across all selected nodes. |
| `free_percent` | [integer](./integer.md) | Percentage of free physical memory across all selected nodes. |
| `total_in_bytes` | [long](./long.md) | Total amount, in bytes, of physical memory across all selected nodes. |
| `used_in_bytes` | [long](./long.md) | Amount, in bytes, of physical memory in use across all selected nodes. |
| `used_percent` | [integer](./integer.md) | Percentage of physical memory in use across all selected nodes. |