Hi Petr,
I was hoping you could give me some input on another concern I have.
Which of TCP and UDP is the preferred transport for NCP? The client for
Windows seems to use TCP, which would suggest that that is the most
tested dialect. I also did a quick test with bonnie++:
UDP:
Version 1.03 -----Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
500M 1569 19 1714 10 826 9 1414 18 1569 9 65.2 3
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 460 14 897 16 556 15 491 15 1131 13 320 6
poseidon.drzeus.cx,500M,1569,19,1714,10,826,9,1414,18,1569,9,65.2,3,16,460,14,897,16,556,15,491,15,1131,13,320,6
TCP:
Version 1.03 -----Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
500M 1653 19 3711 11 2312 9 1419 18 4489 6 91.5 1
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 483 14 912 15 587 14 483 14 1176 13 287 6
poseidon.drzeus.cx,500M,1653,19,3711,11,2312,9,1419,18,4489,6,91.5,1,16,483,14,912,15,587,14,483,14,1176,13,287,6
TCP has roughly twice the throughput of UDP. Note that this was done
against a vmware machine that wasn't exactly maxing out the network.
Input welcome.
Rgds
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
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