[Bug 255306] New: cifs transfers capped at 100MBps on 1Gbps link

[tony]

https://bugs.kde.org/show_bug.cgi?id=255306

           Summary: cifs transfers capped at 100MBps on 1Gbps link
           Product: kde
           Version: 4.5
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: lorefice2 at libero.it


Version:           4.5 (using KDE 4.5.2) 
OS:                Linux

when using kde system to transfer files to a windows system using a cifs
mounted directory on an 1Gbps link, transfer is slow.

Reproducible: Always

Steps to Reproduce:
- To have a pair of Gbps NICS, one on windows, the other on linux.
- client: setup a network share on windows server side
- client: modprobe cifs CIFSMaxBufSize=150000
- client: mount.cifs //WINIP/WINSHARE /mountedshare/ -o
user=username,pass=pass,rsize=57200,wsize=57000
- client: dd if=/dev/zero of=/tmp/zero bs=1M count=1000
- client: dd if=/tmp/zero of=/mountedshare/
- observe the reported speed (mine is about 50MBps)
- client: copy /tmp/zero to /mountedshare via dolphin
- observe the reported speed (mine is about 10MBps)

Actual Results:  
Kde speed is 1/5 than dd speed

Expected Results:  
kde speed to be similar to dd speed

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