Description of problem: On a gigabit network, I can transfer files with an average throughput of 80 Mib/s with scp. Transferring the exact files using Dolphin and kio_sftp gives an average throughput of only 12 MiB/s. Version-Release number of selected component (if applicable): kde-runtime-libs-4.10.4-2.fc19.x86_64 How reproducible: Always Steps to Reproduce: 0.a. Setup a gigabit network with at least two machines 0.b. Set up ssh access on machine 2 1. On machine1 open Dolphin 2. Click on the "address" bar. The bar becomes editable 3. enter "sftp://<user>@<ip_of_machine2>:/home/<user>" 4. Enter password when prompted for one 5. After directory loads, "copy"(Ctrl-C) a large local, and "paste" (Ctrl-V) it in the Dolphin window. This starts the transfer. 6. Use the "Network Management" widget to observe transfer speed 7. Try to copy the same or a similar file with scp: $ scp large.file <user>@<ip_of_machine2>:/home/<user>/ 8 Observe the transfer speed either by watching scp output, or using the "Network Management" widget. Actual results: kio_sftp: about 12 MiB/s average throughput, and 80% cpu (core) usage scp: about 80 MiB/s average throughput, and 35% cpu (core) usage Expected results: Same throughput using both scp and kio_sftp, and same cpu usage. Additional info: I transferred one contiguous 8 GiB file. The network was comprised of standard CAT 5E cabling with a low-cost gigabit switch.
Ping? Issue is still here with latest F20 packages.
We're not likely to work on this downstream in fedora (largely due to time and expertise constraints). If you have continued interest in resolving this, contacting upstream (via bugs.kde.org or mailing lists) will have a better chance at yielding results.
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Fedora 20 changed to end-of-life (EOL) status on 2015-06-23. Fedora 20 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.