Hi Peter, The load balancer set for round robin minumweight based, that the request transferred to the Apache instace has minimum connections.
Best Regards, Arun J On Thu, Jan 28, 2010 at 12:54 PM, <pmilan...@nypl.org> wrote: > What is the persistence setting on the Load Balancers? Is it different if > persistence is turned off competely? Weighting servers will throw this off > completely. > > > Thanks- > > Peter J. Milanese, Senior Systems Engineer > Information Technology Group > The New York Public Library > pet...@nypl.org - 212.621.0203 > > > > > > |------------> > | From: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |Arunkumar Janarthanan <arunkumar.webad...@gmail.com> > | > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | To: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |users@httpd.apache.org > | > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | Date: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |01/28/2010 12:41 PM > | > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |------------> > | Subject: | > |------------> > > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > |Re: [us...@httpd] Apache Server status page shows uneven number of > requests across load balanced web servers | > > >--------------------------------------------------------------------------------------------------------------------------------------------------| > > > > > > Could anyone help me with this issue ? I still see the number of workes > differing to each Apache though it configured for well load balancing ? > > On Wed, Jan 27, 2010 at 3:50 PM, Arunkumar Janarthanan < > arunkumar.webad...@gmail.com> wrote: > Gary, > > Here is the netstat output attached from one of the webserver where the > connections are on HIGH numbers. Regarding the load balancer I am trying > to explore more setting options. > > Thanks again for looking into this issue. > > Best Regards, > Arun J > > > On Wed, Jan 27, 2010 at 2:49 PM, Gary Smith <gary.sm...@holdstead.com> > wrote: > Arun, > > > > > > This is just a WAG, but I think that the problem still lies in the > client side and how the load balancer is handling the requests. I would > still be interested in seeing the netstat -atunep output from one of he > affected machines when there is a high level of connections in a closed > state. Even though the sessions aren’t sticky, is it possible that the > load balancer is handling keep alive in such a way that it’s sending the > back to the original server but on in a new state? (that’s a little > beyond my knowledge though). > > > > > > Gary Smith > > > > > > From: Arunkumar Janarthanan [mailto:arunkumar.webad...@gmail.com] > Sent: Wednesday, January 27, 2010 11:37 AM > > To: users@httpd.apache.org > > > Subject: Re: [us...@httpd] Apache Server status page shows uneven number > of requests across load balanced web servers > > > > > > Thanks Gary, > > The load balancing method we use is weight based, so apparently the load > balancer suppose to send the traffic to the web server has least number > of connections. However the Netscaler support confirmed they see > eventual number of traffic routed to all 4 web servers. > > Regarding the Apache restart time, I restarted all 4 servers same time > and checked could still see the requests on 1 & 3 are being handled. I > dont think we have sticky session enabled at loadbalancer level. > > For the same problem we have not before changed the load balancer > settings from sourceIP persistence to Weight based to have the load > distributed equal on all the servers. > > > IP port Type State Req/s > > > 731-...30_80 x.x.x.x 80 HTTP UP 16/s > > > 731-...31_80 x.x.x.x 80 HTTP UP 16/s > > > 731-...31_80 x.x.x.x 80 HTTP UP 14/s > > > 731-...55_80 x.x.x.x 80 HTTP UP 20/s > > > > > > Rsp/s Reqb/s Rspb/s ClntConn SvrConn MaxConn > SurgeQ > > > 731-...30_80 16/s 12406/s 345117/s 7 285 0 > 0 > > > 731-...31_80 16/s 10956/s 365025/s 7 262 0 > 0 > > > 731-...31_80 14/s 11140/s 368655/s 6 268 0 > 0 > > > 731-...55_80 20/s 14322/s 420105/s 7 272 0 > 0 > > > > > > > > > However the Apache server status still shows the number of requests > being handled huge difference. > > > > > > I have attached the balancer-manager page as well with this email. > > > > > > Best Regards, > > > Arun J > > > > > > > > >
