Subject: RE: [netatalk-admins] AS IP speeds
From: Sak Wathanasin (sw@nan.co.uk)
Date: Mon Jan 11 1999 - 19:25:10 EST
In reply to Bob Atkins's message of the 11/01/99 at 10:31 -0800,
> I never said that the Mac *hardware* wasn't capable of saturating an
> ethernet. Clearly a fully multitasking BeOS that has properly written
> networking capabilities will be able to do much more with the G3
This doesn't make much sense to me: logically, a pre-emptive multi-tasking
system, since it has to share the CPU, should be slower than a non-MT system
which has the CPU 100% dedicated to a particular job (for that job only, of
course, nothing else runs). I think the speed of BeOS comes not so much from
the MT, but from being PPC-native from the ground up (in fact, it's the speed
of BeOS that allows it to do pre-emptive MT and still be responsive, not the
other way around).
Back to the topic: is there anyone besides Mr Atkins who is NOT getting at
least 700K BYTES/sec with ASIP over 10-BT? I find it hard to believe that I'm
the only one...
I use the following AppleScript for my tests:
tell application "Finder"
activate
with timeout of 5000 seconds
if (exists file "testfile.dat" of folder "sw:temp:") then
delete file "testfile.dat" of folder "sw:temp:"
empty trash
end if
set startTime to current date
copy file "Etc:Stuff:xfer tests:testfile.dat" to folder
"sw:temp:"
set endTime to current date
end timeout
writetext file "Etc:Stuff:results" data ("Copy started " & startTime &
return & "Copy ended " & endTime & return)
beep
end tell
("writetext" is an OSAX that came with Anarchie); and a similar script in the
other direction. The time measured includes all the Finder pre-flights before
it starts to copy as well as its clean-up operations at the end of the xfer, so
if anything it makes the Mac xfer speed look worse than it is. The numbers I
get are:
netatalk 1.4b2+asun 2.1.2, AppleShare 3.8.1, MacOS 8.5.1
Test file size 22949839
start finish diff K bytes/sec
copy from netatalk 14:40:59 14:41:21 22.00
1018.73
copy to netatalk 14:46:27 14:46:58 31.00
722.97
Sak Wathanasin
Network Analysis Limited
178 Wainbody Ave South, Coventry CV3 6BX, UK
Internet: sw@nan.co.uk
Phone: (+44) 1203 419996 Fax: (+44) 1203 690690
This archive was generated by hypermail 2b28 : Sat Dec 18 1999 - 16:16:10 EST