[THIN] Re: biggest Citrix farm

Tyler,

I have not heard of Chariot. I am looking attheir website to see if I
can find more info. 

Thanx,
Barry Flanagan
--- "Kinchen, Tyler" <KinchenT@xxxxxxxxxxxx> wrote:
> Barry (or anyone), you ever see anyone using NetIQ's Chariot
> (formerly
> Ganymede Chariot) or have an opinion on it's ability to simulate a
> load on a
> Citrix farm.  I know it has application scripts for ICA but have
> never heard
> how good/bad it is?  Any thoughts on it?
> Regards,
> 
> Tyler Kinchen
> 
> 
> > -----Original Message-----
> > From: Barry Flanagan [mailto:barry.flanagan@xxxxxxxxxx]
> > Sent: Thursday, February 26, 2004 5:54 PM
> > To: 'thin@xxxxxxxxxxxxx'
> > Subject: [THIN] Re: biggest Citrix farm
> > 
> > 
> > Ron,
> > I agree with your caution on how many servers to run in a farm.
> Every
> > environment is different, and no test department can 
> > completely simulate all
> > the possible scenarios customers may build. For a farm that 
> > large, before
> > ever rolling it out I would try to simulate the environment 
> > with a load
> > simulation tool like Mercury Interactive's Load Runner with the
> Citrix
> > Virtual User. For an environment that is approaching 300 or 
> > more servers ,
> > MI (or one of their competitors) is a worthy investment. I 
> > like MI because
> > you can record a user session then kick off a large quantity 
> > of sessions per
> > client. MI says you can simulate 100 from a beefy client test
> machine,
> > though in my experience more than 40 is pushing it (not sure what
> MI
> > considers beefy). Not many corporations would rollout a 
> > project with 300-500
> > web servers without simulating the load first. 
> > If you simulate the load before you roll out, you should find any
> weak
> > points before production. The key of course is simulating 
> > what real users
> > will do. MI cost a lot of cash, unfortunately. If the 
> > customer already uses
> > it for web simulation, adding the Citrix VU is a lot easier 
> > to swallow. I
> > agree that you cannot pitch a design based on test numbers 
> > that may or may
> > not apply to your environment. Load simulation should give 
> > you a lot more
> > confidence. All you have to do is convince the ones with the 
> > money it is
> > worth it. <g>
> > 
> > Those numbers you heard about test are a bit different from what
> my
> > experience has been. I saw the test environment when they had 
> > 1000 servers
> > in the farm. They regularly test 500 in a farm (at least once 
> > for every new
> > release). They keep about 250 servers in the scalability lab 
> > (test Level 2).
> > 
> > 
> > 
> > FR3 was tested with up to 800 servers in a zone. Another 
> > interesting number
> > was IMA start time was reduced from 8 minutes in a 250 server 
> > farm (for Fr2)
> > to under a minute (for Fr3). That alone should greatly 
> > improve scalability.
> > These numbers were presented at iForum I believe. As I 
> > mentioned before,
> > your mileage may vary.
> > 
> > 
> > Thanx,
> > 
> > Barry Flanagan
> > 
> >  
> > *   From: "Ron Oglesby" <roglesby@xxxxxxxxxxxx> 
> > *   To: <thin@xxxxxxxxxxxxx> 
> > *   Date: Thu, 26 Feb 2004 14:05:19 -0600 
> > In one farm... You had better retalk to Citrix consulting. The
> test
> > engineers and Citrix CCS architects I deal with don't want to 
> > sign off on
> > anything larger that 400+ servers in the SAME farm. Different 
> > frams in the
> > same environment is different. 
> > 
> > Hell Test says they haven't even tested much bigger than 400
> > 
> > Ron Oglesby
> > Senior Technical Architect
> > Microsoft MVP - Windows Server
> >  
> > RapidApp, Chicago
> > Mobile 815 325-7618
> > Office 312 372-7188
> > e-mail roglesby@xxxxxxxxxxxx
> > 
> > 
> > 
> > 
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