Transfer speed
The performance depends much on the speed of both systems but you should get reasonable speed even on slow systems. The following transfer rates were measured on the following systems:
- Amiga A600
- CPU: 68030 @ 25 MHz
- RAM: 10 MByte
- HD: 250 MByte
- OS: AmigaOS 2.05
- WB: 2.1
- PC
- CPU: Intel PIII 800 MHz
- RAM: 704 MByte
- HD: 35 GByte
- OS: GNU/Linux 2.4.18
Parallel port
|
RAM <-> HD |
HD <-> HD |
| From Amiga to PC |
38 KByte/s |
32 KByte/s |
| To Amiga from PC |
18 KByte/s |
15 KByte/s |
Serial port
|
Transfer speed |
Effective speed |
| Amiga <-> PC |
57600 |
5.2 KByte/s |
| Amiga <-> PC |
115200 |
9.4 KByte/s |
Comparison of transfer methods
Floppy disc |
APCComm Serial |
APCComm Serial |
APCComm Parallel |
4 KB/s |
5.2 KB/s
(57600 Bit/s) |
9.4 KB/s
(115200 Bit/s) |
38 KB/s |
|
Floppy: Filesize / ( Time for writing from amiga to disc + time for reading from disc to pc )
There is no crunching code so the speed doesn't depend on the content of the
files you are transferring. You can get lower or ever higher values.
You can expect decent rates even when using slower systems.
Also the overhead for small files is rather big so transferring many small files will impact the speed. Archiving (even without compression) is recommended for this case if time matters.
ADF mode
Direct disk access to read/write ADF images is slower, I got write speed of
around 11 KByte/s and read speed of around 22 KByte/s. So it takes around 40
seconds to create an ADF image and 1 minute, 20 seconds to write it back to
floppy disk.
Speed reports
| other Speed reports |
|---|
| System |
Direction |
Speed |
| A1200 030/50, Celeron 333 |
To Amiga |
16-18 KByte |
Notes
The quality and performance of the serial communication on the Amiga
with multitasking enabled depends heavily on the load of the
system. When a lot of interrupt related stuff is going on, like disk
access, sound, graphics, etc., the serial port may experience hardware
overrun which leads to missing data and eventually aborted
transmission. If you get such a message, try stopping CPU intensive
programs or select a slower speed. Also, speeds of 57600 and more
usually require a faster CPU than the base 68000.
The fast setting (115200) usually is only reliable if nothing else
is running on the system (and it will also require a faster CPU). In
my experience, Kickstart 3.1 is more reliable at higher speeds than
older Kickstarts so the OS version will also affect achievable
performance.