Tier 1 Application and Feature Performance
Run Business-Critical Applications on vSphere 5 with High Performance and Cost-Saving Consolidation
In a VMmark® 2 benchmark comparison between identical vSphere 4.1 and vSphere 5 clusters, vSphere 5 boasts the following improvements:
- 33% more virtual machines per host
- Twice the number of transactions while maintaining quality of service
- 22% increase in overall VMmark 2 scores (workload throughput) at the saturation of a system’s resources
Zimbra Collaboration Server provides a full-featured and robust suite that includes email, calendaring, and collaboration software. Zimbra Collaboration Server in a virtual machine can scale up effectively, and performs within 95% of a physical host. It also scales out effortlessly, with only a 10% drop in Sendmail latency as up to eight virtual machines are added. Zimbra Collaboration Server consumes less than half of the CPU of Microsoft Exchange Server 2010 for the same number of users and provisioning time is also orders of magnitude faster.
Hadoop is a distributed software platform for managing and transforming the large quantities of data seen in high performance computing environments. Virtualized instances of Hadoop outperform their physical counterparts by 4% on average. Running two or four smaller VMs on each two-socket machine of seven in the test setup boosts performance by up to 14%.
Key performance requirements for Exchange Server are the efficiency of both single and multiple Exchange Server 2010 virtual machines, and migration using vMotion technology with no measurable impact to end-user experience. For 16,000 very heavy users, transaction latencies are only 184 milliseconds and consume less than 32% CPU utilization on the host. These low latencies for 95% of the mailboxes provide an outstanding response time for Exchange Server users. The low CPU utilization on the host leaves huge room for further user growth.
A monster virtual machine with 24 vCPUs and running on a Fujitsu PRIMERGY server achieves 4,600 sales and distribution users and 25,150 SAPs. This is currently the largest SAP two-tier workload run on vSphere. When the results of this study are compared with those of a test run on native hardware, vSphere 5 displays performance within 6% of its physical counterpart.
1 Million IOPS with vSphere 5
vSphere 5 demonstrates impressive storage I/O capabilities—a single vSphere 5 host is capable of supporting a million+ I/O operations per second. Additionally, 300,000 I/O operations per second can be achieved from a single virtual machine. And I/O throughput (bandwidth consumption) scales very well as the request size of an I/O operation increases. vSphere offers a virtualization layer that, in conjunction with some of the industry’s biggest storage platforms, can be used to create private and public clouds that are capable of supporting any level of I/O demands originating from the virtualized applications.
SIOC improves virtualized application performance by regulating access to I/O resources in a shared storage environment. When the workloads of multiple virtual machines contend for the same storage I/O, application performance can be impacted. But SIOC redistributes access to the storage I/O queue through the use of disk shares, so important workloads and latency-sensitive applications get the performance they need. For the test cases executed at VMware labs, a high-priority workload gained an 11% performance benefit when managed by SIOC.