Category Archives: Performance – Geschwindigkeit

Latency Sensitive VMs and vSphere DRS

Some applications are inherently highly latency sensitive, and cannot afford long vMotion times. VMs running such applications are termed as being ‘Latency Sensitive’. These VMs consume resources very actively, so vMotion of such VMs is often a slow process. Such … Continue reading

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Understanding vSphere DRS Performance – A White Paper

VMware vSphere Distributed Resource Scheduler (DRS) is responsible for placement of Virtual Machines and balancing of resources in a cluster. The key driver for DRS is VM/Application happiness, and it achieves this by effective VM placement and efficient load balancing. … Continue reading

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Machine Learning on VMware vSphere 6 with NVIDIA GPUs

by Uday Kurkure, Lan Vu, and Hari Sivaraman Machine learning is an exciting area of technology that allows computers to behave without being explicitly programmed, that is, in the way a person might learn. This tech is increasingly applied in … Continue reading

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New White Paper: Best Practices for Optimizing Big Data Performance on vSphere 6

A new white paper is available showing how to best deploy and configure vSphere for Big Data applications such as Hadoop and Spark. Hardware, software, and vSphere configuration parameters are documented, as well as tuning parameters for the operating system, … Continue reading

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vSphere 6.0 U2 Storage Performance with 32Gb Fibre Channel

We compared the I/O performance of vSphere 6.0 U2 over 16Gb and 32Gb Emulex FC HBAs connected via a Brocade G620 FC switch to an EMC VNX7500 storage array. Iometer, a common microbenchmark, was used to generate the workload for … Continue reading

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How to correctly test the performance of Virtual SAN 6.2 deduplication feature

In VMware Virtual SAN 6.2, we introduced several features highly requested by customers, such as deduplication and compression. An overview of this feature can be found in the blog: Virtual SAN 6.2 – Deduplication And Compression Deep Dive. The deduplication feature … Continue reading

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DRS Doctor is here to diagnose your DRS clusters

Mystery revealed, DRS for VMware vSphere is no more a black box! DRS Doctor will tell you all you need to know about your DRS clusters. Our latest fling, DRS Doctor, will monitor your DRS clusters for virtual machine and … Continue reading

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Virtual SAN 6.2 Performance with OLTP and VDI Workloads

Virtual SAN is a VMware storage solution that is tightly integrated with vSphere—making storage setup and maintenance in a vSphere virtualized environment fast and flexible. Virtual SAN 6.2 adds several features and improvements, including additional data integrity with software checksum, … Continue reading

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Peeking At The Future with Giant Monster Virtual Machines

Remember that cool project with VMware, HP Enterprise, and IBM where four super huge monster virtual machines (VMs) of 120 vCPUs each were all running at the same time on a single server with great performance?  That was Project Capstone, … Continue reading

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Tutorial Session on Performance Debugging on VMware vSphere

Ever wondered what it takes to debug performance issues on a VMware stack? How do you figure out if the performance issue is in your virtual machine, or the network layer, or the storage layer, or the hypervisor layer? Here’s … Continue reading

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