Virtual Ethernet On Power Eng
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The document summarizes the results of performance tests of different network connection technologies in IBM Power Systems logical partitions (LPARs). Test 1 showed an IVE adapter connected LPAR achieved 0.83Gbps for a single thread and 0.92Gbps for 16 threads. Test 2 using virtual ethernet between Hypervisor-connected LPARs achieved 1.33Gbps and 1.65Gbps respectively. Test 3 using an IVE adapter directly between LPARs achieved the highest speeds of 1.75Gbps and 5.88Gbps. The conclusion is that for high performance without 10GbE infrastructure, an IVE adapter provides the best performance with lower CPU usage than virtual ethernet.
Virtual Ethernet On Power Eng
- 1. Performance comparison of different network connection technologies in LPARs (IBM Power Systems) Test test objects the velocity obtained* № a single thread 16 threads 1 LPAR A – IVE adapter - Switch – LPAR C 0.83Gbps 0.92Gbps 2 LPAR A – Virtual Ethernet (Hypervisor) – LPAR B 1.33Gbps 1.65Gbps 3 LPAR A – IVE adapter – LPAR B 1.75Gbps 5.88Gbps *for TCP/IP in all three tests used the default settings Scheme of the test landscape Speed up and its impact on the CPU-overheding (is given in physical CPU) copy over the network in a single thread 6 3 Gbps 0 CPU overhead 1Gbit Virtual Ethernet IVE Ethernet adapter run by (LHEA) Hypervisor
- 2. copy over the network in a 16 threads 6 3 Gbps 0 CPU overhead 1Gbit Virtual Ethernet IVE Ethernet adapter run by (LHEA) Hypervisor Conclusion Even in the absence of 10Gbit Ethernet infrastructure for data transmission over the network between the two LPAR, placed on the same IBM Power Systems, may receive a rate of 1Gbit per second. In the application of multi-threading - much more than 1Gbit per second. At the same Virtual Ethernet (run by Hypervisor), inferior to the maximum speed for the internal VLAN- created on the 1Gbit IVE adapter-e and consumes significantly more CPU resources (due to the implementation of TCP/IP offload by the CPU). Therefore, in the absence of 10Gbit Ethernet infrastructure, the most effective solution on the platform of IBM Power Systems, both from a performance standpoint, and from the perspective of a reasonable (lean) to use/load of CPU resources that is - Integrated Virtual Ethernet Adapter (IVE). But ... the latest generation of IBM Power Systems is no longer IVE/LHEA - and it's really bad news. Questions? Oleg Korol it-expert@ukr.net http://ua.linkedin.com/pub/oleg-korol/26/920/716