Mark Lord wrote:

quoted text
> Mark Lord wrote:

>> Today I've been using 2.6.25-rc8 with an old embedded build system here

>> for my empegs.  One shell script calls out to /usr/bin/ftp to transfer

>> an image to a remote system, and then read it back again and compare.

>>

>> The compare is failing, most (but not all) of the time,

>> but only on 2.6.25-rc8, not on 2.6.24.  Verified by switching

>> back and forth between kernel versions for a short spell.

>>

>> The ftp client is netkit-ftp 0.17-16 on Kubuntu feisty.

>>

>> Switching to ncftpput/ncftpget avoids it on 2.6.25,

>> but I wonder where the problem is.

> ..

>

> Now verified that the data loss occurs in the outbound direction.

> The readback data is the same, regardless of which client s/w is used.

>

> So something in 2.6.25 is incompatible with the ftp client binary, or libs,

> that are installed here.  Or some other problem.

Or maybe it uses sendfile, and that is broken?
Also, try using ethtool to turn off TSO and/or checksumming on your NIC

(if it is not wireless), and see if behavior changes...
	Jeff
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