T4 (Total Timeline Tracking Tool) is a tool for capturing and consolidating important OpenVMS performance statistics. Pulling from several independent yet cooperating sources, T4 lets you create a relatively compact composite timeline view of the day-to-day performance of each important OpenVMS node. The data is collected in the TLC format and can be converted to CSV. Collections include:

  • MONITOR: CPU usage, I/O, memory, locking, etc.
  • NET_MON: network adapter performance statistics
  • ACLG: logins, logouts, process duration
  • XFC_MON: XFC performance statistics
  • LCK73_MON: lock manager performance data
  • TCP_MON: TCPIP activity
  • FC_MON: FC disk performance statistics
  • EVA_MON: EVA performance data
  • SPL_MON: spinlock traces

The collected T4 data can be viewed with TLViz (Time Line Visualizer), a graphical viewer for the Microsoft Windows platform, or an HTML page can be generated from it using the CSVPNG tool.

Latest Version



Freeware - no license required (Integrity and Alpha)