Commented Unassigned: sftpfilestream read is very slow. [1919]

Sftpfile stream is very slow it took 1hr 15 mins for 400mb file.
Is there any way to increase the read buffer of the sftpfilestream.
sftp.buffersize is for upload i believe. But i tried changing it no luck.
Comments: ** Comment from web user: drieseng **

I've committed the changes today.
Can you build from SVN, and check if improves performance substantially for you ?