![]() As the performance gap narrows between bare metal and virtualized applications, the gains in agility with virtualization outweigh the minor performance overhead of a hypervisor. In the paper, “ Performance Optimizations in VMware vSphere 7.0 U2 CPU Scheduler for AMD EPYC Processors” VMware shows how their CPU scheduler achieves up to 50% better performance than vSphere 7.0 U1. AMD and VMware are continuously working to optimize the performance of high value workloads like Oracle. We virtualized the Oracle database instance since that is the most common deployment model in use today. Oracle Enterprise Edition 19c (19.7.14).Both database modes used the exact same technology stacks: For a deep dive into RDBMS tuning, this white paper provides more great technical detail.įor the sake of comparison, we also ran an Oracle database without FFC mode on the same server. The AMD webpage on modern data workloads is an excellent overview. Although we listed the processor features we believe will most impact performance, in truth there is much more to these new processors that we haven’t covered. With all these cache levels and memory channels our hypothesis was that the AMD EPYC processors were going to deliver amazing performance. Up to eight Zen3 cores share a 32 MB 元 cacheĮach processor also supports 8 memory channels and each memory channel supports up to 2 DIMMS.Each core has a private 512 KB L2 cache.Zen3 processor core, includes an L1 write-back cache.There are several layers of cache in these processors: What’s fascinating is that by using Oracle’s FFC mode, the AMD EPYC processors can accelerate database operations while bypassing most storage I/O wait times.įor this performance test our PowerEdge R7525 server was populated with two AMD EPYC 7543 processors with a speed of 2.8 GHz, each with 32 cores. Writes are still sent to storage to ensure durability and recovery of the database. This effectively reduces the read latency from what would have been experienced with the storage system to memory access speed. When using FFC mode, the Oracle server attempts to cache the full database footprint in buffer cache memory. Intriguing, right? The Oracle team at Dell Technologies recently configured a Dell EMC PowerEdge server equipped with the new AMD EPYC processors to test the performance of an Oracle 19c database feature called Force Full Cache (FFC) mode.
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