Hi
------ Originalnachricht ------
Von: karthikeyan.rajam...@thomsonreuters.com
An: haproxy@formilux.org
Gesendet: 27.10.2017 00:13:50
Betreff: HAProxy1.7.9-http-reuse
Hi,
We are testing a setup which has a local haproxy which connects to a
remote haproxy which in turn calls an apache server which returns a
html page.
Haproxy(local)->Haproxy(remote)->Apache.
We have the set up working, the ping time from local to remote haproxy
is 204 ms.
The time taken for the web page when accessed by the browser is 410 ms.
We want the latency to be 204 ms when accessed by the browser. We
configured to reuse http & with http-reuse aggresive|always|safe
options
but could not reduce the 410 ms to 204 ms. It is always 410 ms. Please
let us know how we can reuse http & reduce out latency.
ping is normally icmp and will be answered by the kernel.
http is normally tcp and will be answered by the apache httpd.
How do you measure the latency on the browser site?
Why do you expect that a complete other work flow have the same amount
of time?
You can try to use mod_cache or some other cache concepts to reduce the
disc I/O, in case you deliver a file and it fits into os cache.
Regards
Aleks
Thanks
Karthik
Please find the version, local config, remote config & local haproxy
log
1.haproxy -vv
HA-Proxy version 1.7.9 2017/08/18
---------
2.Local config
-
global
log 127.0.0.1 local0
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
defaults
log global
mode http
option httplog
timeout http-keep-alive 50000
timeout connect 5000
timeout client 50000
timeout server 50000
maxconn 500
frontend http_front
bind *:80
stats uri /haproxy?stats
capture response header Connection len 32
default_backend http_back
backend http_back
option http-keep-alive
http-reuse always
server remote remote.haproxy.internal:80 check inter 60000 maxconn
500
-----
3. Remote config
-
global
log 127.0.0.1 local0
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
defaults
log global
mode http
option httplog
option http-keep-alive
timeout http-keep-alive 50000
timeout connect 5000
timeout client 50000
timeout server 50000
frontend http_front
bind *:80
stats uri /haproxy?stats
default_backend http_back
backend http_back
option http-keep-alive
http-reuse always
server web2 52.91.x.x:80 check inter 60000 maxconn 500
-----
4. Local haproxy log
172.31.x.x:53202 [26/Oct/2017:21:02:36.368] http_front http_back/web1
0/0/204/205/410 200 89 - - ---- 0/0/0/0/0 0/0 {} "GET / HTTP/1.0"
