Thanks a lot Nathan I appreciate your help. -Mike
-----Original Message----- From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Nathan Aker Sent: Wednesday, May 16, 2012 4:23 PM To: [email protected] Subject: Re: Load Balancer & Mid Tiers Mike, per the latest BMC Reference Architecture document, the Midtier can handle up to 150 peak concurrent users per CPU and 300 peak concurrent users per 2 CPU virtual machine (VM). The performance ceiling is typically with the instance of the webserver supporting the Midtier and the available memory of the JVM instance it runs on. Previous recommendations specified not exceeding approx. 400-500 concurrent users (if memory serves correctly) per web server instance but I haven't seen the equivalent recommendation documented on the latest ARS version. I've never personally attempted to run multiple webserver instances on a single machine to overcome this ceiling and expand the capacity, not sure how successful it would be. Regardless, those recommendations assume a Miditer server separate from AR Server so you'll need to take that into consideration when sizing. Nathan Aker ITSM Solution Architect McAfee, Inc. -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Hocks, Mike (DOT) Sent: Wednesday, May 16, 2012 4:07 PM To: [email protected] Subject: Re: Load Balancer & Mid Tiers Brian, thanks a lot for the info...so it sounds like the rule of estimating 150 concurrent connections per mid-tier is way off base...we are running a quad core xeon proc with 24GB of RAM w/ Windows 2008 64BIT ... sounds like we are in good shape our environment? We do have Mid-Tier and the AR System all on the same box (pre-config stack install) Thanks again, -Mike -----Original Message----- From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Brian Goralczyk Sent: Wednesday, May 16, 2012 2:51 PM To: [email protected] Subject: Re: Load Balancer & Mid Tiers I would say that 500 concurrent users isn't to much for some servers to handle. It all depends on your hardware and your code. If you are using out of the box, what are those 500 users going to be doing? If it is custom code, how cleanly is it written. Performance testing and improvement is a job all on it's own. But I have had systems that have dealt with that level of load without a problem. The biggest issue is the single point of failure mentioned. Brian Goralczyk Phone 574-643-1144 Email [email protected] On Wed, May 16, 2012 at 1:28 PM, Hocks, Mike (DOT) <[email protected]> wrote: > Interesting, we need to build out our environment for 500 concurrent > connections, do you think we should plan for more AR Servers to accommodate > 500 concurrent connection? > > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[email protected]] On Behalf Of pritch > Sent: Wednesday, May 16, 2012 2:22 PM > To: [email protected] > Subject: Re: Load Balancer & Mid Tiers > > You can, but then you still have a potential single point of failure (or > bottleneck). > > ----- Original Message ----- > From: "Andrew C Goodall" <[email protected]> > To: [email protected] > Sent: Wednesday, May 16, 2012 3:11:15 PM > Subject: Re: Load Balancer & Mid Tiers > > You can have multiple point to one. > > Regards, > > Andrew C. Goodall > Software Engineer > Development Services > [email protected] > jcpenney > 6501 Legacy Drive > Plano, TX 75024 > jcp.com > > -----Original Message----- > From: Action Request System discussion list(ARSList) > [mailto:[email protected]] On Behalf Of Mike Hocks > Sent: Wednesday, May 16, 2012 2:06 PM > To: [email protected] > Subject: Load Balancer & Mid Tiers > > A question regarding a Load balancer and multiple Mid Tiers .... Can I have > multiple mid tiers point to 1 AR Server or do I need to have an AR Server for > each Mid Tier? > > We are running the 7.6.04 from the Pre Config Stack Installer on a > Windows 2008 Server with a SQL backend > > Thank you! > -Mike > > ______________________________________________________________________ > _________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > attend wwrug12 www.wwrug12.com ARSList: "Where the Answers Are" > The information transmitted is intended only for the person or entity to > which it is addressed and may contain confidential and/or privileged > material. If the reader of this message is not the intended recipient, you > are hereby notified that your access is unauthorized, and any review, > dissemination, distribution or copying of this message including any > attachments is strictly prohibited. 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