fish:// transfer speed slow in one direction

[Chris Miller]

On Sun, May 18, 2008 at 3:58 PM, James Gray <james.gray at dot.com.au> wrote:
> Anton Rolls wrote:
>>
>> Hi,
>>
>> I've got a strange problem transferring files
>> between Kubuntu Feisty machines using fish://
>> in Konqueror.
>>
>> When files were transferred from the client
>> to the server, the transfer speed was ~1.1MB/s.
>> When files were transferred the other way,
>> from server to client, it went at about 8.1MB/s.
>>
>> Does this ring any bells ?
>
> The kio "fish" is painfully slow.  The problem is in the KDE code, not your
> network.  I see the same thing on a gigabit network between a pair of
> high-end machines (many cores, hardware RAID, lots of RAM):
>
> CLIENT       SERVER    SPEED
> FISH    <--> SSH       1-2Mbps
> SSH/SCP <--> SSH       700-800Mbps
>
> When using KIO handlers (specifically CIFS/SMB/FISH/SFTP) I've noticed the
> throughput really suffers compared to either dedicated clients or command
> line utilities for the same protocols.
>
> You may notice your CPU utilisation is comparatively much higher with the
> "fish" handler compared to using scp/sftp etc.

That is interesting.  I had never associated it with anything more
than a poor connection.

Oh well, still better than smoke signals I guess.

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