Hi,
I'm trying to optimize my haproxy and servers configuration, but I'm
having problem when I want to understand what's failing or limiting
the configuration.
I'm using autobench with httperf to generate up to 3000 to 5000
request/second; I have a machine with haproxy, and two others with a
nginx server each. And I have 3 computers using httperf to stress the
application, all synchronized by autobench.
My problem is that autobench reports that it could only achieve up to
2200 requests/second, when I requested 3000 or 4000. So I look for
dropped connections, or failed requests in haproxy log and I don't
find any.
I already checked my test setup, so I check that each httperf client
is able to substain a 2000 request/second, and I have 3 machines with
httperf, so reaching that level shouldn't be a problem for them.
I have the tcplog option activated, and the termination_state of the
log is always '--' so, no problems there.
I don't know where to look, so, I was wondering if anyone could tip me
on what to look, and where to look for the reason that's limiting the
request/second.
Thanks in advance!
Mariano
PD: here's the haproxy.conf
global
maxconn 32000
ulimit-n 65536
log localhost user
daemon
#nbproc 2 # Number of processing cores. Dual Dual-core Opteron
is 4 cores for example.
user haproxy
group haproxy
stats socket /tmp/haproxy-socket
chroot /var/chroot/haproxy
pidfile /var/run/haproxy-private.pid
defaults
mode tcp
log global
option tcplog
clitimeout 60000
srvtimeout 30000
contimeout 4000
#option httpclose # Disable Keepalive
listen bind 0.0.0.0:80
balance roundrobin # Load Balancing algorithm
server server1 10.251.121.219:81 weight 1 maxconn 2040 check
server server1 10.250.131.143:81 weight 1 maxconn 2040 check
