Hello! I use libssh in my project to copy files from local machine to remote by function sftp_write. And I found that I can not use buffer large than 256 KiB in sftp_write. By that (or not?) I have small copying speed - 1MiB/s. For comparison, by using libssh2 I get 10MiB/s for copying on same local machine, but I used 10MiB buffer with libssh2_sftp_write (on 255KiB buffer the speed is same that I got with libssh).
Why sftp_write function has limit of 256 KiB buffer? Is removing this limit make upload by sftp faster? Thanks. Sorry for my English.
