What is the rule of thumb , should I go for more cores (quadcore, i7) or more speed 3.3ghz core 2 duo?
What motherboards are proofed to not have problems with ROS?
After switching from 2.4 ghz single core old celeron to 2.7ghz dual core AMD processor , i see slight improvement about 15-20% better cpu performance showed, even thought no problems detected , system shows 2 cores, and everything works good ver 3.28 i’m wondering about the complexity of load balance between cores, so is it worth to buy more cores or better speed?
It would be very helpful if people have best performance MT routers to post their exact hardware configuration cpu/motherboard/ram, so it will guide us to better hardware selection, when creating our own powerful routers.
The reason you did not get an answer is that this question has been covered in detail on these forums.
With older versions it is better to have a higher clock speed. With newer versions that support IRQ/Receive Packet steering you are better to have more cores.
Yes, that’s outside of the OS and happens on the bus.
Read http://www.linuxfoundation.org/collaborate/workgroups/networking/toe for the Linux Foundation opinion on TOE and why there are no Linux drivers. While it would be interesting to know whether Mikrotik includes third party patches I would very strongly suspect that they do not.
I thought MetaROUTER was PPC only (I don’t use virtualization), and that KVM was the only currently supported x86 virtualization option.
Yes, again that’s a bus thing.
Many ROS processes are currently single processor bound. CPU features that add perceived processors can help because processes get spread around the processors, but do not help if that lowers the single processor speed as the single bound process receives fewer cycles.
Don’t know
Yes, but ROS has horrible HDD performance in most processes. If you need high performance off load all tasks that require disk IO (proxy) to external machines better suited for such tasks. Logging should go to syslog and memory only. Really, this - in many ways, though not in others - makes sense as it aims at integrated routers that operate from NAND or flash and should write as little to disk as possible.
Would like to repost on this since no answer was received on QPI
If we use harpertowns 54xx range for routing gets you 8 cores but does QPI on nehalem or westemere 56xx help improve the IRQ / RPS in anyway. BEcause these days its so easy to pump in 200k packets per second which can bring a router to its knees.
Was wondering if QPI and newer architecture helps in any way on the IRQ front.
The original message was i7 vs i5 but thats a quad core vs dual core comparison. Would like to know difference between 54xx and nehalem or 56xx cpus - do they make a big difference?
the big idea for me choosing AMD is Hyper Transport. i have test my AMD athlon II X2 with 200 pppoe client active (1 profile but 200 session no traffic), and cpu resource displays just 2%-8%, my intel atom netbook (ROS) as pppoe server cpu load 30%-80%.
