Re: Behaviour of system tray bandwidth indicator

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The same problem also exists for copy to slow USB keys. The copy seems
to finish really fast (or KDE shows a real fast progress at the
beginning and then stalls), but when you try to unmount immediately it
takes up to minutes to really complete the copy process.
The main problem noways is that the write cache in the Kernel is
becoming much too large with current RAM sizes. I don't think there is
much that KDE can do here, but the Kernel should decrease the default
write cache sizes.

On 17.03.2014 14:02, 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.
> 
> Is this what's going on? Note that the copy does work correctly.
> 
> KDE 4.11.7 on F20.
> 
> poc


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