tcp troughput weirdness
danny at cs.huji.ac.il
Tue Jul 12 06:21:15 GMT 2005
while checking out the quality of a switch, I came about a very disturbing
dicovery: FreeBSD <-> Linux througput is MUCH better than FreeBSD <-> FreeBSD
2 blades in the same bladeserver, A running FreeBSD 5.4, B running Linux
C is running FreeBSD 5.4
all are connected at 1gb.
A -+ (FreeBSD)
B -+ (Linux)
+---- [router] --- C (FreeBSD)
A & B are on the same Vlan.
Interval Transfer Bandwidth
A <=> B 0.0-10.0 sec 1.09 GBytes 939 Mbits/sec
A <=> C 0.0-10.0 sec 515 MBytes 432 Mbits/sec
B <=> C 0.0-10.0 sec 1.07 GBytes 918 Mbits/sec
I've run the tests several times, and the numbers are very similar,
so BIG Question: is there anything that can be tunned on the FreeBSD to
better the throughput?
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