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Some Context for This Session…

Some Context for This Session… . Performance historically a concern for virtualized applications By 2009, VMware (through vSphere ) and hardware vendors nearly eliminated the costs of storage, network, and memory virtualization

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Some Context for This Session…

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  1. Some Context for This Session… • Performance historically a concern for virtualized applications • By 2009, VMware (through vSphere) and hardware vendors nearly eliminated the costs of storage, network, and memory virtualization • With overheads near zero, new technologies in virtual deployments could sometimes beat physical counterparts • This session will focus on a diverse mix of extremelydemanding apps • Applications where we have proven performance with industry standard workloads and benchmarks • Not just speeds and feeds

  2. Virtual Machines ESX Server CPU Memory Storage Network Catalysts for Change - ESX 3.5 Platform Enhancements Scale Compatibility Performance • 64GB virtual RAM • Paravirtualization • Ubuntu • Windows Vista • 256 GB of physical RAM • Large memory pages • 10 GigE • Infiniband • TCP Segmentation Offload (TSO) • Jumbo Frames • NPIV Support • SATA devices

  3. 8-way vSMP and 255 GB of RAM per VM • 64 cores and 1 TB physical RAM • Wirespeed network access Catalysts for Change - ESX 4.0 Platform Enhancements VM Scale Up Virtual Machines • Virtual hardware scale out APP APP APP APP APP Hardware Scale Up OS OS OS OS OS ESX Hardware Assist Purpose Built Scheduler • Lowest CPU overhead CPU Hardware Assist Page Sharing Ballooning • Maximum memory efficiency Memory VMXNET3 VMDirectPath I/O Networking Storage stack optimization pvscsi • Less than 0.1 ms latency • Over 350,000 IOPS Storage Current NEW

  4. History Lesson on Application Performance 100% ESX 2 ESX 3 ESX 3.5 ESX 4.0 Overhead • 30% - 60% • 20% - 30% • <10% - 20% • <2% - 10% VM CPU • 1 vCPU • 2 vCPU • 4 vCPU • 8 vCPU Apps Supported VM Memory • 3.6 GB • 16 GB • 64 GB • 255 GB IO • <10,000 IOPS • 380 Mb • 800 Mb • 100,000 IOPS • 9Gb • >350,000 IOPS • 30 Gb ESX Version Source: VMware Capacity Planner analysis of > 700,000 servers in customer production environments

  5. Catalysts for Change - Hardware Improvements AMD 4M L2 cache 2010 AMD-V 10x faster AMD RVI released 2009 Intel VT-d 10x faster Intel EPT released 2008 AMD-V released Intel FlexPriority Released 2007 2006 Intel VT-d released Intel 4M L2 cache

  6. Catalysts for Change - Software Scalability Limited • VMware ESX Scaling: • Keeping up with core counts vSphere X Virtualization provides a means to exploit the hardware’s increasing parallelism vSphere 4 • Additional application scaling cost-prohibitive at some point

  7. Catalysts for Change: New Virtualization-based Architectures • vSphere-based deployments have options unavailable to physical servers: • On-loading multi-threaded IO drivers to efficiently use multiple cores • Scale out on a single host • Circumvents application scalability limitations • Improves memory locality of reference and increases cache efficiency • Hardware-accelerated network interrupt delivery • Strict memory encapsulation into NUMA nodes

  8. Catalysts for Change - Summary • VMware has made dramatic improvements in the performance of its virtualization platform • Hardware vendors have accelerated the efficiency of virtual workloads • vSphere provides flexibility that can allow administrators to circumvent application limitations • vSphere efficiently uses CPU in a way physical servers cannot • vSphere can meet and beat native application performance in many situations

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