Hi,
I am looking at nginx (as a proxy) and haproxy to setup a cluster of
machine to serve WordPress blogs. Initially I was going with nginx but
the biggest problem with nginx is that I have no way to limit the number
connection to a machine (even with fair load balancer) which haproxy
does. This is a big issue with apache servers because 3 out of 4
machines appears to hang with heavy spike loads, requiring manual
restarts (any input on this issue would be appreciated though I
understand it is not the right forum for this).
Haproxy works like a champ by protecting the server. However I expected
it to queue the requests in its global queue. It didn't seem to happen
that way as per the stats console.
1. Why *isn't haproxy queuing the requests*? What parameters should I
tweak to queue requests upto a reasonable level?
The biggest problem I am having is that the throughput is much lower
than that of nginx. *
2. What can we do to improve the overall throughput* *of haproxy*?
My haproxy configuration is:
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
maxconn 32000
chroot /usr/share/haproxy
uid 99
gid 99
ulimit-n 65536
daemon
nopoll
defaults
log global
stats enable
mode http
option httplog
option dontlognull
retries 3
option redispatch
maxconn 2408
contimeout 30000
clitimeout 60000
srvtimeout 30000
timeout connect 10000
listen nginx-pool 172.16.0.66:80
option httpchk GET /test
balance leastconn
server fighter 172.16.0.74:80 cookie fighter weight 2 minconn
25 maxconn 75 check inter 30000 maxqueue 200
server workhorse 172.16.0.50:80 cookie fighter weight 4 minconn
30 maxconn 100 check inter 30000 maxqueue 400
server testing 172.16.0.53:80 cookie fighter weight 4 minconn
30 maxconn 100 check inter 30000 maxqueue 400
server apollo 172.16.0.73:80 cookie fighter weight 3 minconn 30
maxconn 100 check inter 30000 maxqueue 300
server margay 172.16.0.61:80 cookie margay weight 1 minconn 20
maxconn 75 check inter 30000 maxqueue 100
3. *Is sepoll better than epoll for Linux 2.6.x kernel*? I am using
Fedora 8 distro.
Any pointers & help will be highly appreciated.
It's a nice product, keep up the great work.
Thanks,
Angsuman
--
Angsuman Chakraborty
CEO Taragana Inc.
http://www.taragana.com | http://blog.taragana.com |
http://angsuman.taragana.net
You can follow me on twitter - http://twitter.com/angsuman
AIM: angsuman, Yahoo IM: angsuman
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email;internet:[email protected]
title:CEO
tel;work:+91-33-24051943
tel;cell:+91-9836026643
x-mozilla-html:TRUE
url:http://www.taragana.com
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