Hello , we started to use haproxy on our production environment. the request are coming to a layer 4 load balancing - ldirector which forwards them to a haproxy which forwards it to a tomcat on the same server .
our connection handling inside tomcat is fast - ~10 mili seconds, and we want to delegate the connection handling with the WAN to haproxy instead of a tomcat thread thus getting batter throughput . we are getting a lot of http request error, about 10% of the requests are timed out on the client side, increasing the "timeout http-request", does not help , the connection just terminates after the max time has passed. echo "show errors" | socat unix-connect:/tmp/haproxy stdio is clear . below are a few error records from the log : Apr 4 14:01:38 localhost.localdomain haproxy[22451]: 95.206.61.53:62766 [04/Apr/2012:14:01:28.855] pm pm/<NOSRV> -1/-1/-1/-1/10001 408 212 - - cR-- 13/13/2/0/0 0/0 "<BADREQ>" Apr 4 14:01:39 localhost.localdomain haproxy[22451]: 67.197.4.199:55973 [04/Apr/2012:14:01:29.025] pm pm/<NOSRV> -1/-1/-1/-1/10000 408 212 - - cR-- 12/12/3/0/0 0/0 "<BADREQ>" here are some details - Linux tapp4.ny 2.6.18-274.3.1.el5 #1 SMP Tue Sep 6 20:13:52 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux [root@tapp4 haproxy-1.4.20]# more /etc/issue CentOS release 5.5 (Final) Kernel \r on an \m [root@tapp4 haproxy-1.4.20]# /usr/sbin/haproxy -vv HA-Proxy version 1.4.20 2012/03/10 Copyright 2000-2012 Willy Tarreau <[email protected]> Build options : TARGET = linux26 CPU = generic CC = gcc CFLAGS = -O2 -g -fno-strict-aliasing OPTIONS = Default settings : maxconn = 2000, bufsize = 16384, maxrewrite = 8192, maxpollevents = 200 Encrypted password support via crypt(3): yes Available polling systems : sepoll : pref=400, test result OK epoll : pref=300, test result OK poll : pref=200, test result OK select : pref=150, test result OK Total: 4 (4 usable), will use sepoll. any help would be much appreciated . Alon
