Re: [Xen-users] Please help estimate number of the domUs

[Andrey <basketboy@xxxxx>]

Well, storage is the direct-connect HP P2000 G3 FC dual-controller array 
with 600GBx24 disks in dual-path configuration (two HBA ports -> two 
controllers ports). I guess it is quite enough.
13.01.2013 20:45, admin@xxxxxxxxxxx ÐÐÑÐÑ:
> You will probably run out of disk IO before you run into any hard limits
> in XenServer or XCP.
>
> What type of SAN are you going to use?  What type of network
> interconnect will you use to link your XenServer/XCP nodes to your SAN?
> How many IOPS does your SAN deliver over your chosen network interconnect?
>
> On 1/13/2013 9:03 AM, Andrey wrote:
> > Sure, will try. I see in XenServer 6.1 FAQ that maximum supported
> > number of guests is 150 and it requires increasing dom0_mem to max
> > 4096. It's obvious that internal limits are not quite realistic so it
> > will be good result for me if we able to run at least 100 guests. It
> > seems that it is more realistic number although some resources note
> > maximum number of VMs as 4-10 per CPU core (so 32-80 in my case). But
> > in all these cases 192 GB RAM would be redundant I think.
> >
> > With regards, Andrey
> >
> > 11.01.2013 16:43, Wei Liu ÐÐÑÐÑ:
> > > On Fri, 2013-01-11 at 12:24 +0000, Andrey wrote:
> > > > Thank you for the answer
> > > >
> > > > I'm really consider the case with creating as many DomUs as possible
> > > > with typical load and get practical info.
> > > >
> > > > What about network capacity? Does this math implies to the network
> > > > resources? Should we shape the DomUs bandwidth to prevent network
> > > > overload? Can CPU be bottleneck in this configuration?
> > > The math I did was to show you some internal infrastructure limits that
> > > I know.
> > >
> > > CPU / network overloading is another topic. TBH I haven't done stress
> > > tests on CPUs and network.
> > >
> > > And whether you will hit any bottlenecks in CPU / network or not relates
> > > closely to your use case. Boot up DomUs and do some typical workload is
> > > a good idea.
> > >
> > >
> > > Wei.
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>
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