Re: [twsocket] FTP upload speed

[OBones]

David Rose (dsr) wrote:

Hi

Is there any upload speed throttling built in to the TMagFTP component 
(or Overbyte one) ?
I've noticed that if I upload a file to our FTP site via TMagFTP the 
upload speed is approximately six times slower than using a commercial 
FTP client (Flash FXP). One reports 565KB/s and the other 90 kb/s. The 
upload times (16 seconds as opposed to 1m 40) confirm the reported 
speed difference.
Tested with the MagSys demo app just to make sure it wasn't something 
in my app that was interfering.


Any suggestions ?


Could it be that FlashFXP uses multiple connections at once? If the 
server limits bandwidth per connection, then this would explain the 
behavior.

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Re: [twsocket] FTP upload speed

[Angus Robertson - Magenta Systems Ltd]

> I have this in my code (I think lifted from your example)

You really don't need any code, the default is no bandwidth control.  

> Not sure what else to do to try and diagnose.

Try a different server, such as mine which is the ICS FTP server.  I'll
email a login. 

Angus

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Re: [twsocket] FTP upload speed

[Angus Robertson - Magenta Systems Ltd]

> Is there any upload speed throttling built in to the TMagFTP 
> component (or Overbyte one) ?

All ICS components have optional bandwidth limiting, it's part of
WSocket, on the XferDemo3 it's set by the Bandwidth Limit field which
should generally be zero.  

I do know from experience that ICS does not offer the maximum possible
transfer speed under Windows that is available with a blocking file
transfer API (we don't use), but that does handle SSL or reporting
(without using threads).  

I do daily FTP downloads from some of my public servers to make sure
everything is running OK, and this is typical: 

https://www.magsys.co.uk/download/testing/speed50meg.zip
Download OK, size: 48.8 Mbytes, duration 0:11, average speed 4.07M/sec

My public servers are only on 100Mbit switches and through an old slow
firewall, so they go a lot faster, not designed for speed tests...

Uploads are a little slower, but they are limited by my FTTC connection
to 20Mb/s: 

Upload OK: magtelecom.zip, size: 75.8 Mbytes, duration 0:36, average
speed 2.09M/sec

Angus

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[twsocket] FTP upload speed

[David Rose (dsr)]

Hi

Is there any upload speed throttling built in to the TMagFTP component 
(or Overbyte one) ?
I've noticed that if I upload a file to our FTP site via TMagFTP the 
upload speed is approximately six times slower than using a commercial 
FTP client (Flash FXP). One reports 565KB/s and the other 90 kb/s. The 
upload times (16 seconds as opposed to 1m 40) confirm the reported speed 
difference.
Tested with the MagSys demo app just to make sure it wasn't something in 
my app that was interfering.


Any suggestions ?

regards

David

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David Rose
Director, Navigator Systems Ltd
Telephone: +44 (0)207 183 0011
mobile:
Address: Unit 12, Old Mills Industrial Estate, Paulton, Bristol.BS39 7SU
Website: www.navigator.co.uk 
Email: d...@navigator.co.uk 





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