SUSE Linux Enterprise Server 12 (x86_64) VERSION = 12 PATCHLEVEL = 0
On server running legacy software with text GUI (perl/c).
When connected via ssh - all is ok. When connected via telnet - both, screen redraws and sending pressed keys to server work with visible delays.
Why? And how to fix?
If I connect to host via ssh, and after that run
telnet localhost - delays does not occurs.