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:
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 20maxconn 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.
-- 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: angsumanReceived on 2009/01/06 03:44
- text/x-vcard attachment: angsuman.vcf
This archive was generated by hypermail 2.2.0 : 2009/01/06 04:00 CET