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8. How to quit and monitor Future Drive Accelerator

Future Drive Accelerator can monitored and exited using Future Drive Accelerator View:

The monitor accepts Workbench Tool Types and shell parameters:

KILL-FDA
Writes the cache to the drive (if necessary) and quits Future Drive Accelerator.
FLUSH
Flushes the cache, except for data that has to be written to disk.
UPDATE
Writes the cache to the drive (if necessary).

Future Drive Accelerator View is a by-product, which has helped the author while developing Future Drive Accelerator to find the optimal algorithm (6) for using the cache. The author didn't plan to release this program, but does it now anyway for the curious ones.
Normally, Future Drive Accelerator View is only required to quit Future Drive Accelerator.

The right part of the window shows the current cache structure (sorted).
Above this is a summary of the list, how many tracks are in memory and how many of them are waiting to be written to the drive. On the left side you can control how the list should appear.
Finally, at the top, you can see how much of the free memory is used as currently as cache (Avail Memory).

A simplier statistic would be of no use, because the cache is always used at 100%.

Sorted by
Location
Lists the memory areas where the cache-parts reside (7).
The whole cache is listed.
  • Location Start position of the track in memory.
  • Type Memory Type
  • Size Number of Bytes a tracks uses in the cache.
  • Track Number of Track. No. 0 is the first.
  • Used Number of accesses to the track.
  • Old Time (in seconds) since the last access.
  • Parti Logical partition- or drive-name.
  • DiskName Virtual partition-, medium- or disk-name.
Above this is written how many tracks are in the cache alltogether (all free memory) and how many of that must still be written to the disk.
Track
Lists the cache-parts of a partition, medium or disk.
  • Track Number of track. No. 0 is the first.
  • Location Start position of the track in memory.
  • Type Memory typet.
  • Used Number of accesses to the track.
  • Old Time (in seconds) since the last access.
  • Flags
    • NowBusy Track is read or written.
    • MustWrite Track must be written.

Above this is written how many tracks of the medium (8) are in the cache and how many of that must be written to drive. The next lines contain
  1. the Unit the medium/partition belongs to, the name of the device and the start postion (track-number) of the partition on the disk.
  2. logical partition- or drive-name and virtual partition-, medium- or disk-name.
  3. When the medium was created (formatted) and the date of the last modification. (Only FastFileSystem)
Page Up
One page up.
Cursor left, Shift+Cursor up.
Page Down
One page down.
Cursor right, Shift+Cursor down.
Top
Top of the list.
Key T.
End
End of the list.
Key E.
Before Medium
Jump to the previous medium.
Next Medium
Jump to the next medium.

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