D.10. RHN Satellite

File System Used — The percent of the current file system now in use.

Space Used — The file size used by the current file system.

Space Available — The file size available to the current file system.

Probe Execution Time Average — The seconds required to fully execute a probe.

Input Rate — The amount of traffic in bytes per second the device receives.

Output Rate — The amount of traffic in bytes per second the device sends.

Probe Latency Average — The lag in seconds between the time a probe becomes ready to run and the time it is actually run. Under normal conditions, this is generally less than a second. When a Satellite is overloaded (because it has too many probes with respect to their average execution time), the number goes up.

Load — The load average on the CPU for a 1-, 5-, and 15-minute period.

Probes — The number of individual probes running on a Satellite.

Blocked — The number of processes that have been switched to the waiting queue and waiting state.

Child — The number of processes spawned by another process already running on the machine.

Defunct — The number of processes that have terminated (either because they have been killed by a signal or have called exit()) and whose parent processes have not yet received notification of their termination by executing some form of the wait() system call.

Stopped — The number of processes that have stopped before their executions could be completed.

Sleeping — A process that is in the Interruptible sleep state and that can later be reintroduced into memory, resuming execution where it left off.

Processes — The number of processes running simultaneously on the machine.

CPU Usage — The CPU usage percent for a given process.

Child Process Groups — The number of child processes spawned from the specified parent process. A child process inherits most of its attributes, such as open files, from its parent.

Threads — The number of running threads for a given process. A thread is the basic unit of CPU utilization, and consists of a program counter, a register set, and a stack space. A thread is also called a lightweight process.

Physical Memory Used — The amount of physical memory in kilobytes being used by the specified process.

Virtual Memory Used — The amount of virtual memory in kilobytes being used by the specified process, or the size of the process in real memory plus swap.