Frame Cache View



Cache View

This page allows LDAS users to obtain a graphical view of the frame times in diskcacheAPI.

  1. Select one or more Frame Types e.g. R (Raw frames), T (second-trend), M (minute-trend) RDS frames etc. or enter your own.
  2. Select one or more Sites, e.g. H (Hanford frames), G (Geo frames) etc.
  3. For description of sites and types see document LIGO Technical Note LIGO-T010150-00-E.

  4. Specify the time ranges: one easy way is to select one of the time options: last minute, last hour, last day to get some time in the entry fields and then modify the times to your desire range.
  5. Submit request to server by hitting the SUBMIT button.

Response:

A graph window shows the presence of frame files as green lines; you can zoom in to view some small gaps if they are present.

Response:

A popup will appear to report on selected types and sites are not found in the cache.

There is also a report on the frame gaps if any by hitting the Gaps button on the graph.

diskcache Mount Point Directories



Directories

This page allows LDAS users to view diskcacheAPI mount point subdirectories in the form of a directory tree.

  1. A list of mount points are displayed on the left for selection.
  2. Double click on mount point to select it. The mount point will be displayed in the entry under the List Directories button.
  3. Submit request to server by hitting the SUBMIT button.

Response:

A graph window on the right shows the subdirectories as a tree format.

Response:

Extra messages from the diskcacheAPI are displayed in the status window on the right. You can toggle Flatten Directory Tree to see the path of each directory. No file information is displayed at this time.