Subscribe System Info¶

interface SystemInfo {

  // Yamcs version number.
  yamcsVersion: string;

  // Git revision number at build time.
  revision: string;

  // Server identifier, as used in system parameters and distributed setups.
  serverId: string;

  // Uptime of Yamcs in milliseconds
  uptime: string;  // String decimal

  // Java virtual machine implementation name, version and vendor
  jvm: string;

  // Working directory of Yamcs (base path for relative references)
  workingDirectory: string;

  // Directory where configuration files are located.
  configDirectory: string;

  // Directory where Yamcs data is stored.
  dataDirectory: string;

  // Directory where Yamcs may cache files.
  cacheDirectory: string;

  // Operating system name and version.
  os: string;

  // Operating system architecture.
  arch: string;

  // Number of processors available to Yamcs.
  availableProcessors: number;

  // System load average for the last minute.
  loadAverage: number;

  // Amount of memory in bytes of the heap that is used for object allocation and that is committed for the JVM to use.
  heapMemory: string;  // String decimal

  // Amount of used heap memory in bytes.
  usedHeapMemory: string;  // String decimal

  // Maximum amount of heap memory in bytes that can be used for memory management.
  maxHeapMemory: string;  // String decimal

  // Amount of non-heap memory in bytes that is committed for the JVM to use.
  nonHeapMemory: string;  // String decimal

  // Amount of non-heap used memory in bytes.
  usedNonHeapMemory: string;  // String decimal

  // Maximum amount of non-heap memory in bytes that can be used for memory management.
  maxNonHeapMemory: string;  // String decimal

  // Number of active threads.
  jvmThreadCount: string;  // String decimal

  // Root directories, each corresponding to a distinct file hierarchy.
  rootDirectories: RootDirectory[];

  // Information about the Yamcs process and any descendants.
  process: ProcessInfo;
}

interface RootDirectory {

  // Root directory location.
  directory: string;

  // The type of the file store where this root directory is located.
  type: string;

  // Size in bytes of the file store where this root directory is located.
  totalSpace: string;  // String decimal

  // Number of unallocated bytes in the file store where this root directory
  // is located.
  unallocatedSpace: string;  // String decimal

  // Number of bytes available to Yamcs on the file store where this root
  // directory is located.
  usableSpace: string;  // String decimal
}

interface ProcessInfo {

  // Native process ID.
  pid: string;  // String decimal

  // User of the process.
  user: string;

  // Executable pathname of the process.
  command: string;

  // Arguments of the process.
  arguments: string[];

  // Start time of the process.
  startTime: string;  // RFC 3339 timestamp

  // Accumulated total cputime.
  totalCpuDuration: string; // Duration in seconds. Example: "3s" or "3.001s"

  // Direct children of the process.
  children: ProcessInfo[];
}