Migrate large amount of small files

[Ckcheng]

Hi all,
Currently, I have a directory with over 5M small files (1~32K). Now,
I want to transfer this directory to another machine and found
that it's extremely slow and painful process. I tried the following
method:

1. rsync
2. tar via ssh
3. tar via nc
(all take hours and hours to finish)

None of them is able to give me a reasonable migration time. So, I'm
here for asking help. Any suggestion is extremely welcomed. Thank you.

Btw, here is brief information of my server. (both machines are the same)

OS: FreeBSD 6.4-Stable 64Bit
CPU: 2 x Xeon L5420 2.50GHz
RAM: 2 x 2G ECC DDR2-667 (full buffered)
DISK: Seagate Barracuda ES 16MB (SATA 300)
Network: 1Gbps (Broadcom BCM5708)
Filesystem: UFS2

Regards,