File sizes
The area of each rectangle in a view window is proportional to the size of the file it represents.
You can change both the file size measure and the file size unit system that is used from the application's Preferences.
File size measures
GrandPerspective supports two different file size measures:
- Logical size,
which corresponds to the size of the information in the file.
For example, the logical size of a simple ASCII text file is the number of characters (including spaces and linebreaks) it contains.
- Physical size,
which represents the space that a file actually takes up on disk.
A file's physical size can be the same as its logical size, but is typically slightly larger due to the way files are stored.
For example, a file with a logical size of ten bytes may, depending on the file system, have a physical size of 1024 bytes.
File size unit systems
When reporting file sizes, GrandPerspective uses one of the following unit systems:
- Binary,
in this case one kilobyte contains 210=1024 bytes.
Simlarly, a megabyte contains 220 bytes, and so on.
- Decimal,
in this case one kilobyte contains 103=1000 bytes.
Similarly, a megabyte contains a million bytes, and so on.
See also