[Bug 291835] New: KIO very slow when copying from network (smb, fish, ftp)

[Matthew Stobbs]

https://bugs.kde.org/show_bug.cgi?id=291835

           Summary: KIO very slow when copying from network (smb, fish,
                    ftp)
           Product: kde
           Version: 4.7
          Platform: Unlisted Binaries
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: stobbsm at gmail.com


Version:           4.7 (using KDE 4.7.4) 
OS:                Linux

When copying a file from my server (Ubuntu 11.04 server, samba 3.5.8), my
Windows install copies at around 90MB/s. This is true whether using FileZilla
for sftp or ftp, or Explorer for the samba connection.

On Sabayon, OpenSUSE, Fedora, Kubuntu, or compile my own with Gentoo, all
network copying done through KIO doesn't get higher then 22 MB/s. On the
command line, using scp, I get 87 MB/s. Using smbclient, I get a huge 98 MB/s.

This has been happening with every version of KDE from version 4.3, no matter
the release. I used to be able to use sftp instead of fish, but that is missing
from Sabayon (or KDE 4.7.4, not sure).

Reproducible: Always

Steps to Reproduce:
1. Connect to a remote file server using your chosen protocol (fish, smb, ftp).
2. Copy any file to your local system from the remote system (best seen with
large files).
3. Wait for a long time for the files to copy.

Actual Results:  
Transfer speeds ranging from 18 MB/s to 21 MB/s on a gigabit network.

Expected Results:  
Transfer speeds ranging from 70 MB/s to 100 MB/s on a gigabit network.

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