| Operating System | Linux distribution and kernel version | |
| Logical Cores | Number of logical CPU cores | |
| CPU Architecture | Kernel info, including CPU architecture | |
| CPU Usage | Percentage of CPU used by the OS | % |
| CPU Usage Details | CPU usage breakdown: user, system, softirq, irq, nice, iowait, steal | % |
| CPU Load (1 min) | Average CPU load over 1 minute | |
| CPU Load (5 min) | Average CPU load over 5 minutes | |
| CPU Load (15 min) | Average CPU load over 15 minutes | |
| CPU Load per Core (1 min) | 1-minute average load per core | |
| Memory Usage | OS memory usage ratio (used/total) | % |
| Memory Used | OS memory used | Bytes |
| Memory Cache | Cache memory size (file cache) | Bytes |
| Memory Buffer | Buffer memory size (disk block buffer) | Bytes |
| Available Memory | Available memory size | Bytes |
| Total Memory | Total host memory | Bytes |
| Major Page Faults | Number of major page faults per second | Count/s |
| Swap In | Data moved from swap to memory per second | Bytes/s |
| Swap Out | Data moved from memory to swap per second | Bytes/s |
| Swap Usage | Used swap size / total swap size | Bytes |
| Available Swap | Available swap size | Bytes |
| File System Usage | Disk partition usage ratio (used/total) | % |
| File System Used | Used disk partition size | Bytes |
| File System Available | Available disk partition size | Bytes |
| File System Total | Total disk partition size | Bytes |
| File System Inode Usage | Used inodes / total inodes | % |
| Current Open Files | Number of currently open files | |
| Max Open Files | System max open files (/proc/sys/fs/file-max) | |
| Disk Throughput (Read) | Disk device read throughput per second | Bytes/s |
| Disk Throughput (Write) | Disk device write throughput per second | Bytes/s |
| Disk IOPS (Read) | Disk device read IOPS per second | iops |
| Disk IOPS (Write) | Disk device write IOPS per second | iops |
| Disk Latency (Read) | Average disk device read latency | ms |
| Disk Latency (Write) | Average disk device write latency | ms |
| IO Queue Length | IO request queue length | |
| Disk IO Util% | Disk device busy ratio | % |
| Network Throughput (In) | Network card received traffic per second | bits/s |
| Network Throughput (Out) | Network card sent traffic per second | bits/s |
| Network Usage (In) | Network throughput (In) / NIC bandwidth | % |
| Network Usage (Out) | Network throughput (Out) / NIC bandwidth | % |
| Network Packets (In) | Network card received packets per second | Packets/s |
| Network Packets (Out) | Network card sent packets per second | Packets/s |
| Network Dropped Packets (In) | Dropped packets per second (receive) | Packets/s |
| Network Dropped Packets (Out) | Dropped packets per second (send) | Packets/s |
| Network Errors (In) | Error packets per second (receive) | Packets/s |
| Network Errors (Out) | Error packets per second (send) | Packets/s |
| TCP Active Connections Rate | CLOSE => SYN-SENT per second | Count/s |
| TCP Passive Connections Rate | LISTEN => SYN-RECV per second | Count/s |
| TCP Retransmissions | Retransmitted TCP packets / total TCP packets | % |
| TCP Current Established | Number of TCP connections in ESTABLISHED+CLOSE-WAIT | |
| Forks | Number of forked processes per second | |
| Runnable Processes | From /proc/stat. Proc_running | |
| Blocked Processes | From /proc/stat. Proc_blocked | |
| Context Switches | Average context switches per second | Count/s |
| Interrupts | Average interrupts per second | Count/s |
| Uptime | Total system uptime | s |
| Availability | System availability, normal/abnormal | |