ssh X11 forwarding 속도 향상

[링크 : http://xmodulo.com/how-to-speed-up-x11-forwarding-in-ssh.html]

 [링크 : http://blog.famzah.net/2010/06/11/openssh-ciphers-performance-benchmark/]

[링크 : http://www.cyberciti.biz/faq/speeding-up-ssh-x11-forwarding-with-unix-osx-linux-bsd/]

[링크 : http://ubuntuforums.org/showthread.php?t=1855933]

rpi2 + putty + xming 에서는

vlc 실행에 걸리는 시간이 차이가 거의 안나서.. 다른 좀 더 영상이 많다거나 하는 걸로 테스트 해봐야 할 듯..

Turn on compression to speed up your connection, and bring Blowfish to the top of the list. Blowfish is still relatively secure, but will be a heck of a lot quicker than AES at passing information as your computer doesn’t have to encrypt things so heavily.

[링크 : http://irrationale.com/2009/11/10/x11-over-ssh/]

Nagle 알고리즘은 패킷의 갯수를 줄이는 것

일단 적은 데이터(MTU 미만)에서는 응답속도와 tradeoff가 일어난다.

기본값은 off니까 빠릿빠릿하게 ssh 응답을 하는 듯?

4.12.4 "Disable Nagle's algorithm"

Nagle's algorithm is a detail of TCP/IP implementations that tries to minimise the number of small data packets sent down a network connection. With Nagle's algorithm enabled, PuTTY's bandwidth usage will be slightly more efficient; with it disabled, you may find you get a faster response to your keystrokes when connecting to some types of server.

The Nagle algorithm is disabled by default.

[링크 : http://the.earth.li/~sgtatham/putty/0.52/htmldoc/Chapter4.html]