LiQingFeng7 commented on issue #584: URL: https://github.com/apache/mina-sshd/issues/584#issuecomment-2298461549
> > openSSH I directly use the sftp command to connect to the target machine and put the upload to check the speed. > > So you compare the speed of a direct connection to "targetIP" against an indirect connection via "A"? > > > Then I overwrote the doWrite() method on SftpSubSystem and used JSCH to open a fd again for put operation, which was as fast as openSSH. > > That's what I wrote above, forwarding requests without going to a filesystem at all. Should be possible to do with an Apache MINA sshd client, too. If done correctly, server A wouldn't even have its own file handles -- it'd forward everything to targetIP, and funnel back responses to the client. > > In fact, just using an SSH tunnel going through A to "targetIP" is probably even simpler. > > openSSH I directly use the sftp command to connect to the target machine and put the upload to check the speed. > > So you compare the speed of a direct connection to "targetIP" against an indirect connection via "A"? > > > Then I overwrote the doWrite() method on SftpSubSystem and used JSCH to open a fd again for put operation, which was as fast as openSSH. > > That's what I wrote above, forwarding requests without going to a filesystem at all. Should be possible to do with an Apache MINA sshd client, too. If done correctly, server A wouldn't even have its own file handles -- it'd forward everything to targetIP, and funnel back responses to the client. > > In fact, just using an SSH tunnel going through A to "targetIP" is probably even simpler. Yes, because I compared rewriting the SftpSubSystem's dowrite() method using jsch in a way that was consistent with the speed of a direct openSSH connection to "targetIP", then removed the rewritten method for comparison and found that it was much slower. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@mina.apache.org For additional commands, e-mail: dev-h...@mina.apache.org
