Comparing ESXi 4.1 and ESXi 5.0 Scaling Performance

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In previous articles on VROOM! we used VMmark 2 to investigate the effects of altering a single hardware component, such as a storage array or server model, in a vSphere cluster. In contrast to these earlier studies, we now examine the effects of upgrading the hosts’ software from ESXi 4.1 to ESXi 5.0 on the Read more...

4 simple resource optimizations for VMware View 5

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By default the VMware View PCoIP protocol dynamically optimizes for the best user experience for the given resource constraints. In the majority of environments, this is the desired approach. However, there can be times where individual users or group administrators are interested in different resource utilization policies and in past blogs and whitepapers we have Read more...

Zimbra Collaboration Server Performance on vSphere 5

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Zimbra Collaboration Server is VMware’s mail, calendaring, and collaboration software. A performance study looks at how the mail server performs on vSphere 5. Test results demonstrate the following: Due to optimizations made within Zimbra Collaboration Server and the tickless timer within Red Hat Enterprise Linux (RHEL) 6, Zimbra Collaboration Server in a virtual machine can Read more...

Troubleshooting Performance Related Problems in vSphere 4.1 Environments

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The hugely popular Performance Troubleshooting for VMware vSphere 4 guide is now updated for vSphere 4.1 . This document provides step-by-step approaches for troubleshooting most common performance problems in vSphere-based virtual environments. The steps discussed in the document use performance data and charts readily available in the vSphere Client and esxtop to aid the troubleshooting Read more...

Oracle RAC Performance on vSphere 4.1

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Oracle Real Application Clusters (RAC) is used to run critical databases with stringent performance requirements. A series of tests recently were run in the VMware performance lab to determine how an Oracle RAC database performs when running on vSphere. The test results showed that the application performed within 11 to 13 percent of physical when Read more...

VMware vCenter Server Performance and Best Practices for vSphere 4.1

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VMware recently released a white paper on performance and best practices for vCenter Server in VMware vSphere 4.1. This paper addresses four common areas of concerns regarding vCenter Server performance: Performance improvements in vSphere 4.1 compared to vSphere 4.0 vCenter Server sizing guidelines and software requirements Best practices in performance monitoring, tuning and troubleshooting Case Read more...

VMware Sets Performance Record with SPECweb2005 Result

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Introduction We just published the largest SPECweb2005 score to date on a 16 core server. The benchmark was run on an HP ProLiant DL585 G5 with four Quad-Core AMD 8382 OpteronTM processors.  This record score of 44,000 includes an Ecommerce component demonstrating 69,525 concurrent connections.  In the Support component, this single-host workload drove network throughput Read more...

Welcome to the VMware Performance Blog and the VMmark Benchmark

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Welcome to the VMware performance blog! Here we’ll address interesting issues regarding the performance of virtualized environments. For our first entry, we’ve chosen a subject important to many people: benchmarking. For a while now, VMware has been developing a benchmark to measure the performance of virtualized systems. The benchmark (VMmark) is specifically designed to measure Read more...