diff options
Diffstat (limited to 'src/alf.1')
| -rw-r--r-- | src/alf.1 | 17 |
1 files changed, 10 insertions, 7 deletions
@@ -247,16 +247,17 @@ compress/decompress such files, and you\(aqd have to have a hard disk and a DOS capable of handling multi\-megabyte files... .SS Performance .sp -Performance is pretty good, as of alftools\-0.3.0. For small files +Performance is pretty good, as of alftools\-0.4.0. For small files like you\(aqd use on an Atari (up to 50KB), it\(aqs basically instantaneous -(0.008 seconds) on the author\(aqs modest i7 workstation. For a 1MB -text file, it takes 0.026 sec; for 1MB of random garbage, it\(aqs 0.043 -sec (and the resulting ALF file is 36% larger than the garbage). +(0.008 seconds) on the author\(aqs modest i7 workstation. For a 1MB text +file, it takes 0.026 sec (faster than \fBarc\fP!). For 1MB of random +garbage, it\(aqs 0.043 sec (and the resulting ALF file is 36% larger than +the garbage). .sp By comparison, \fBzip\fP takes 0.06 seconds to compress the 1MB text file, and 0.03 sec for the 1MB randomness (and the compressed file is still -larger than the input, but only by 312 bytes). The speed demon is \fBarc\fP: -it compresses the text file in 0.03s, and it\(aqs smart enough to \fInot\fP +larger than the input, but only by 312 bytes). \fBarc\fP +compresses the text file in 0.03s, and it\(aqs smart enough to \fInot\fP compress the random garbage (it uses the \(aqstore\(aq method, which \fBalf\fP doesn\(aqt have). .SS Timestamps @@ -268,7 +269,9 @@ options above). There\(aqs no way to store timezone or daylight savings info in the \fIALF\fP file. .sp The year stored in the \fIALF\fP file doesn\(aqt have a Y2K problem. It does, -however, have a Y2108 problem: the range is from 1980 to 2107. +however, have a Y2108 problem: the range is from 1980 to 2107. Files +with timestamps outside this range will have a zero (invalid) date in the +\fIALF\fP header, and \fBunalf\fP will display the date as \fI<none>\fP\&. .sp The timestamp only has 2\-second resolution. Files with odd\-numbered seconds in the \fImtime\fP will have the number before that (1 => 0, 31 => |