On Thu, 2014-03-20 at 13:14 +0100, Reindl Harald wrote: > Am 20.03.2014 12:29, schrieb Patrick O'Callaghan: > > On Thu, 2014-03-20 at 11:54 +0100, Kevin Kofler wrote: > >> 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. > > > > No doubt, however it's not how it's *read*. The interface could be > > clearer about what it's actually showing when the information is > > misleading. > > how should it? > > if you write 100 MB to disk and the kernel buffers it > from the application you are done, that's how any > modern operating system works for decades > > if you don't want that behavior disable any caches and > buffers but then your machine will be as slow as hardware > years ago Then why does the pop-up show "copy completed" only after it has been transferred to the server? This is not consistent. In fact the more I think about it the more wrong it seems. I'm being told by the widget that X GB were sent in a fraction of a second (open to interpretation), that the copy is not currently consuming any bandwidth (false), but that it hasn't actually finished yet (true). poc _______________________________________________ kde mailing list kde@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kde New to KDE4? - get help from http://userbase.kde.org
