Hi Igoldstein,

Thanks for your reply.


>>>> I would like to know if there are anyone that can point me in a
>>>> direction of configuring the: 
>>>>Session Timeout and the Session readBufferSize when using SSHD. 
>>>>I followed the 5 minute guide and got a server running. I can login and
everything works. 

I'm seeing timeout events when transferring large files. 60mb, and above. I
think the setting I would like is the "WriteTimeout", which is by default
set to 60s. Link:
https://mina.apache.org/mina-project/userguide/ch4-session/ch4.1-session-configuration.html
So is that also set using the FactoryManager? 


>>>> But I have problems with speed when sending/uploading files to the 
server. 

>> Please be more specific about what problems exactly are you having - in
>> any case, please note that: 

>> * SSH is inherently slower than "normal" copy due to the encryption and
>> protocol overhead 
That I know, but this here is by factor 40. I did a test with SCP and get a
speed between 4-8MB/s where as with the SFTP server side on same server I
get 120 - 130KB/s.. So something is off.

>>* There are differences between SFTP and SCP - which one are you using for
send/upload ? 
>>     SCP if faster for whole files, while SFTP is tailored for
>> fine-grained support (e.g. resume a failed upload/download) 

I have done both. But I need to get the SFTP up since that is what is needed
in the application that I'm building. (MINA/SSHD -> SFTP server)

>> * Have you tried activating the compression option of SSH - for large
>> text files it is a definite throughput improvement.
No, I will look into that. Thanks. 

So a little more input from me: We have a 1GB/s fiber line and the server is
setup in google cloud. I get 130kb/s when connecting to the MINA/SFTP
application and if I transfere with SCP to same server with that host the
MINA/SFTP application, I get 4-8mb/s. So it seems that the "readBufferSize"
Link:
https://mina.apache.org/mina-project/userguide/ch4-session/ch4.1-session-configuration.html..
Is set to the default 2048kb... I would like to change that to a higher
number, is that also done in the FactoryManager? 
The files I need to transfer is between 1MB-400MB.
Not sure what else to say. 
Again thanks for your reply, and I hope it make more sense now.

Br. 
Kasper





--
Sent from: 
http://apache-mina.10907.n7.nabble.com/Apache-MINA-Developer-Forum-f6809.html

Reply via email to