Behaviour of system tray bandwidth indicator

[Kevin Kofler]

Patrick O'Callaghan wrote:
> I'm using Dolphin to copy large files (several GB) to an NFS-mounted
> NAS. This works fine except that the informational system tray pop-up is
> showing absurd values for the copy bandwidth. e.g. a 2GB file is
> declared to be finished when it's only just started. It looks like
> what's being measured is the rate of handoff to network buffers. This
> machine has a quad-core i7 CPU with 16GB of RAM and isn't doing much
> else, so the entire file could be copied to system buffers very quickly.
> However the actual LAN is 100Mbps so the real copy takes several
> minutes, and it's only then that I get the pop-up saying it's finished.

The UI can only indicate what is visible to user space, it has no way to, 
nor is it expected to, know what the kernel does behind the scenes. If the 
kernel reports that it has processed the data, the UI shows it as processed. 
That is exactly as designed.

        Kevin Kofler