Re: Optimizing HAproxy for maximum throughput?

BTW: My intention of *bold*ing the questions was to make them prominent, not shouting or being rude. Hope you understand.

Thanks in advance,
Angsuman

Angsuman Chakraborty wrote:
> 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
>

-- 
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





text/x-vcard attachment: angsuman.vcf