Hi Raul, No worries about number of concurrent sessions, this is more a question of memory and sysctls tunning (port_range, etc..)
Note that you may have to use multiple source IPs to manage to open more that 64K connections. For the fun, note that microsoft has validated HAProxy for Exchange 2010 :) Actually, they validated the ALOHA LB from Exceliance which is powered by HAProxy 1.5 branch: http://technet.microsoft.com/en-us/exchange/gg176682.aspx Regards On Fri, Oct 19, 2012 at 6:36 PM, Raul <[email protected]> wrote: > Hello, we want to use haproxy to balance Exchange 2010. > We're testing version 1.4 and version 1.5dev12. > Statistics Reports in version 1.4 the max number of sessions in frontend is > the > same backend max sessions but in version 1.5 the number of sessions in the > backend is ten times lower than in frontend. > Haproxy 1.5dev12 works very well but we hope to 70,000 sessions backends. > Since > this is a development version, has it limitations in max sessions backend? > > > [root@labhaproxy haproxy]# echo "show stat" | nc -U > /var/run/haproxy_Exchange2010_OWA.stat > # > pxname,svname,qcur,qmax,scur,smax,slim,stot,bin,bout,dreq,dresp,ereq,econ,eresp, > wretr,wredis,status,weight,act,bck,chkfail,chkdown,lastchg,downtime,qlimit,pid,i > id,sid,throttle,lbtot,tracked,type,rate,rate_lim,rate_max,check_status,check_cod > e,check_duration,hrsp_1xx,hrsp_2xx,hrsp_3xx,hrsp_4xx,hrsp_5xx,hrsp_other,hanafai > l,req_rate,req_rate_max,req_tot,cli_abrt,srv_abrt, > Exchange2010_OWA,FRONTEND,,,0,24,100000,866,6005939,12497381,0,0,0,,,,,OPEN,,,,, > ,,,,1,1,0,,,,0,0,0,43,,,,,,,,,,,0,0,0,,, > Exchange2010_OWA,labexc104,0,0,0,19,,405,3695987,6761908,,0,,0,23,28,14,UP,1,1,0 > ,22,10,111569,2163,,1,1,1,,17,,2,0,,43,L6OK,,2,,,,,,,0,,,,154,23, > Exchange2010_OWA,labexc103,0,0,0,23,,558,2309094,5735473,,0,,0,28,43,20,UP,1,1,0 > ,20,10,111476,2785,,1,1,2,,17,,2,0,,10,L6OK,,0,,,,,,,0,,,,316,28, > Exchange2010_OWA,BACKEND,0,0,0,24,10000,866,6005939,12497381,0,0,,7,51,71,34,UP, > 2,2,0,,1,175618,50,,1,1,0,,34,,1,0,,43,,,,,,,,,,,,,,470,51, > stats,FRONTEND,,,0,2,2000,852,369168,5484994,0,0,0,,,,,OPEN,,,,,,,,,1,2,0,,,,0,0 > ,0,12,,,,0,462,5,1,384,0,,0,12,852,,, > stats,BACKEND,0,0,0,1,200,384,369168,5484994,0,0,,384,0,0,0,UP,0,0,0,,0,178205,0 > ,,1,2,0,,0,,1,0,,6,,,,0,0,0,0,384,0,,,,,0,0, > > > Regards, > > Raul > >
