Increasing cores won't get you much since the current VR (4.1) linux 2.6.32 where the networking tends to be single-core only. Otherwise YMMV ! Increasing memory also does not give you much -- the bottleneck is the memory used to store conn track connections -- 512mB will get you about 1 million connections.
Hopefully with the new VR (4.2) we can try and squeeze multi-core performance out of it. On 4/19/13 12:54 PM, "benoit lair" <kurushi4...@gmail.com> wrote: >Hello Chiradeep, > >So with a VR running on a x5550 hexacore with not enough noisy neighboors >with a computing offering with 4 core, 4 gb ram, i can hope to run 20 >vlans >with a total troughput of 2 gb max with 10 ip load balanced (each onto 3 >vms) for a total amount of 3k connections (max, avg at 500 connect/s) and >a >max bp of 200Mb/s (this bp is only for the lb ip) ? Or is it not enough >(hoping it is not impossible) ? > > >Thanks for your response. > >Regards, Benoit. > > >2013/4/18 Chiradeep Vittal <chiradeep.vit...@citrix.com> > >> Really depends on >> - your CPU configuration >> - your hypervisor >> - your physical network speed >> - noisy neighbors around the VR / around the physical network >> - how many ipsec vpns >> - how many LB >> - load on the LB >> - number of connections >> >> If you just test the VR in isolation with a 512GB RAM/1core >>configuration >> you should be able to get >> - 2 Gb/s forwarding / firewalling OR >> - 4 to 5k conn/s on the LB >> >> You add the other factors and things can vary wildly >> >> >> On 4/18/13 2:58 AM, "benoit lair" <kurushi4...@gmail.com> wrote: >> >> >Hello, >> > >> > >> >Thanks for your response. >> > >> >However, do you know in production cases, what are the maximum >>bandwidth i >> >can manage with a vpc vr ? Are there limitations or any recommendations >> >(sizing limit in order to avoid performance loss) concerning >>provisionning >> >of the vpc ? >> > >> > >> >Thanks for your advices. >> > >> >Regards, Benoit. >> > >> >2013/4/17 benoit lair <kurushi4...@gmail.com> >> > >> >> Hello guys, >> >> >> >> >> >> I'm testing an preproduction environment with cs4.0.0 onto centos >>5.3. >> >> >> >> I'm testing a vpc environment. >> >> >> >> I'm asking why does the tier networks are limited to 200mb/s (network >> >> offering DefaultIsolatedNetworkOfferingForVpcNetworksNoLB) ? >> >> So in xencenter, if i look at the network tab of my vpc vr vm, i got >>a >> >>qos >> >> of 25600 kbytes/sec. >> >> >> >> Is there a risk to create a different network offering with a 1000 >>mb/s >> >> qos limit ? no limit ? >> >> >> >> What if i want to recreate a multi tier environnment with a no limit >>of >> >> qos with a 500 mb/s troughput, a 1000mb/s troughput ? >> >> >> >> What do you think about vpc vr capabilities ? any deployment >> >> recommendations ? >> >> >> >> >> >> Thanks for any advice. >> >> >> >> Regards, Benoit Lair. >> >> >> >> >> >> >> >> >> >>
