Hello,

I am experiencing performance issues when downloading files through HAProxy, with download speeds typically ranging between 30-50 Kb/sec. However, when bypassing HAProxy and downloading directly from the SFTP server, I achieve speeds of 30-60 MB/sec.

Configuration Details:

I have two HAProxy instances configured with keepalived for high availability, redirecting traffic to my SFTP servers on port 22.
Additionally, I have configured HTTPS to access the application.
Is there a way to optimize the configuration to increase the download speed?

Configuration File:

For security reasons, I have replaced my IP addresses with “IP”.

global
log 127.0.0.1 local0
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
defaults
mode tcp
log global
option redispatch
retries 3

timeout http-request 10s

timeout queue 1m

 timeout connect        3600s
 timeout client         3600s
 timeout server         3600s
 timeout http-keep-alive   10s

timeout check 10s

frontend my_app_be
bind IP:22
mode tcp
default_backend my_app_be

frontend https
bind IP:443
default_backend https

frontend smtp
bind IP:25
mode tcp
default_backend smtp

backend my_app_be
balance source
server node1 IP.132:22
server node2 IP.131:22

backend https
balance source
server node3 IP:443
server node4 IP:443

backend smtp
balance source
server node9 IP:25 check
server node10 IP:25 check

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