[Bug 49819] NFS and SMB transfers across LAN work very slowly

[MrAuer]

Public bug reported:

In Dapper final release, both SMB and NFS mounts accessed across LAN
(100mbit ethernet) transfer data at about 1/10 rate of what it should
be. Meaning a transfer rate of 300-700 kilos/sec, when it normally is
closer to 10 megabytes.

The problem is there with both Samba and NFS, first noticed it with
Samba. This problem shows up in 3 different machines, 2 desktops, 1 old
Thinkpad. All of these machines worked correctly when running under
Hoary, but 2 of them also had this problem with SMB/Breezy packages.
Also, the problem persists in file transfers between Win/Apple systems,
which also worked fine previously. All 3 boxes are clean Dapper LTS
installs. Verified that the hardware works: Transfers across LAN using
HTTP protocol work at near the 100 mbps limit, around 9 megs/sec.

** Affects: linux-source-2.6.15 (Ubuntu)
     Importance: Undecided
         Status: Confirmed

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NFS and SMB transfers across LAN work very slowly
https://launchpad.net/bugs/49819