VERY(!) slow FTP sometimes

Till Straumann strauman at slac.stanford.edu
Thu May 15 17:52:53 UTC 2008


You should probably also say what RTEMS filesystem the files
you are up/down-loading are residing on, how big they are
etc.

Also, you want to make sure the duplex settings are right
on both sides.

T.


Leon Pollak wrote:
> Hello, all.
>
> I incorporated the RTEMS ftpd to my MPC8247 at 150MHz based board with 100BT FCC 
> controller and made several main tests - everything seems to work fine. I can 
> upload/download files by Linux ftp client, FireFox in Linux and IE in 
> Windows.
>
> Now, when I decided to test the speed, I encountered the following VERY 
> strange numbers:
> 1. IE as a client: in 100% of attempts the speed was about 14-16 KB/s.
> 2. FireFox(Linux) as a client:
> 	- in 90% of attempts the speed was about 400-460KB/s
> 	- in about 10% - 7-8 KB/s.
> Even in the "good" FireFox tests (above 400KB/s) the behavior looks also 
> strange a bit: it immediately starts at some number (once at 410KB/s, then at 
> 450KB/s, etc...) and does not change never more.
>
> 1. What may be the cause of the VERY low speed cases?
> 2. Is the "good" speed really good for my case? Can somebody provide numbers 
> from his/her experience?
>
> Thanks.
>   




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