FTP IO Slave performance problems ?

Waldo Bastian bastian at kde.org
Sun Sep 15 20:26:59 BST 2002


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On Sunday 15 September 2002 01:13 am, Bastian Voigt wrote:
> Hello,
>
> in our university network we have an ftp server to which I have a
> switched 100MBit Ethernet connection. Downloading large files with e.g.
> ncftp, a console ftp client, works with about 8-9 MB/s which afaik is
> about the maximum you can get with 100MBit Ethernet.
>
> Doing the exact same download with kde is much slower, around 2.5 MB/s. I
> tried it several times and I ensured that nobody else was downloading from
> the same server during the time of my download. How can this be?

We do some unnecassery copying.

If you want to make this faster you should set "copyToFile=true" in 
ftp.protocol and implement a copy(...) function in the ftp io-slave that 
fetches the file and saves it to disk, instead of fetching it and sending it 
to the application.

Cheers,
Waldo
- -- 
bastian at kde.org  |   SuSE Labs KDE Developer  |  bastian at suse.com
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