id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
8733	filesizeformat filter units unclear	Antti Kaihola	nobody	"The {{{filesizeformat}}} filter calculates prefixes in multiplies of 1024. This is ambiguous, since the units ""kilobyte"", ""megabyte"" and ""gigabyte"" are currently commonly used to express both decimal and binary based sizes. For ""kilobytes"" and ""megabytes"" the difference is probably unsignificant (1,000 vs. 1,024 and 1,000,000 vs. 1,048,576), but in the case of gigabytes it starts to be substantial.

At least these two solutions are possible:
 1. use decimal instead of binary and remind developers in the documentation to mention about it to users if necessary:
    * KB = 1,000 bytes
    * MB = 1,000,000 bytes
    * GB = 1,000,000,000 bytes
 2. use IEC prefixes:
    * KiB = 1,024 bytes
    * MiB = 1,024**2 bytes
    * GiB = 1,024**3 bytes

See also:
 * http://en.wikipedia.org/wiki/Binary_prefix
 * http://en.wikipedia.org/wiki/Gigabyte
"		closed	Template system	dev		wontfix			Design decision needed	0	0	0	0	0	0