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Category Archives: Performance

Virtualized Exchange 2013 IO performance validation with All Flash Arrays

Microsoft Exchange is a very common critical application managed by enterprises.  Exchange 2013 has brought forth many changes to the performance and IO profile of its infrastructure.

Exchange Server 2013 is an even greater candidate for virtualization than its predecessors. Architectural changes and improvements to the core of Exchange Server, along with advancements in server hardware, make vSphere the default choice for Exchange 2013.

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Big Data Sessions, Demos and Labs at VMworld 2014

There are some really very interesting and useful virtualized Big Data-related talks and demos at VMworld 2014 during the week of the 24th-27th August. Among them is a customer panel at 4-5pm on Monday discussing vSphere, vCAC and Big Data Extensions for managing your virtualized Hadoop workloads as well as a talk from a VMware customer on providing Hadoop-as-a-Service (1-2pm on Monday and again at 2:30pm on Wednesday).

Here is a quick summary of the various Big Data events at the show.  Come by and meet us at the various demo stations where we will show these technologies, as well as at the Hands-On Lab, HOL-SDDC-1409. Hope to see you there!

 

Session Date/Time/Contact
VAPP1428 – Hadoop as a Service:   Utilizing VMware vCloud Automation Center and Big Data Extensions at Adobe Mon, Aug 25, 1-2pm (first occurrence)Wed, Aug 27, 2:30-3:30pm (second occurrence)
VAPP1807 – Best Practices of Virtualizing Hadoop on vSphere – Customer Panel Mon, Aug 25, 4-5pm
VAPP1314 – Scaling Your Storage   Architecture for Big Data – How the Isilon Server Fits Well with Virtual Hadoop   Workloads Tue, Aug 26, 4-5pm
VAPP1859 – Extreme Performance Series:   How to Build a High Performance Platform for Big Data Wed, Aug 27, 8:30-9:30am
HOL-SDDC-1409   – Big Data Extensions   Hands on Lab : All Week
Demonstrations on the VMware booth and   at the Data Lake area of the EMC/EVP booth All Week
Customer Meetings Contact jmurray@vmware.com
VMware Big Data Special Interest Group (SIG) Contact kleong@vmware.com

 

Profiling OLTP performance on Virtualized SQL 2014 with All Flash Arrays


TPC-C Benchmark is an on-line transaction processing (OLTP). (TPCC Main site) TPC-C uses a mix of five concurrent transactions of different types and complexity. The database is comprised of nine types of tables with a wide range of record and population sizes. TPC-C is measured as transactions per minute (TPM).

The goal of this exercise was to see if 1 million TPM can be achieved on virtualized SQL 2014 backed by an all Flash storage array for a TPC-C like test.  The TPC-C testing would be compared between two VM sizes (Within NUMA & Exceeding NUMA boundaries)

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vCenter Availability and Performance survey

As many of you know, I work very closely with VMware Product Management and Engineering and we are always looking for data points to support concepts and aid the development of future generations with our products. We have created a 3 page survey that covers Performance and Availability within vCenter Server environments.

Help us make our products better by spending a few minutes to complete, your participation is much appreciated.

https://www.tinyurl.com/VCPerf

 

Does Enhanced vMotion Compatibility (EVC) Affect Performance?

YES!

Now that I’ve scared you, lets take a look at these use cases.

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Checking the vNUMA Topology

I’ve been asked a few times recently how to determine what virtual topology vNUMA recommended and created for us and besides looking at the obvious guest OS for the final result, you can also check the vmware.log file for more detailed information.

Additional background here.

Examples:

1) “Wide and “Flat” virtual machine – default configuration

This virtual machine was configured with 20 vCPUs (20 sockets and 1 corespersocket) on a 4 socket, 10 core, hyper-threading enabled, host:

numa: Exposing multicore topology with cpuid.coresPerSocket = 10 is suggested for best performance

numaHost: 2 virtual nodes, 20 virtual sockets, 2 physical domains

Here we see vNUMA has automatically set corespersocket = 10, which matches the physical topology, and presented 2 “virtual nodes” aka NUMA nodes.

2) Spanning pNUMA nodes – manually configured

This virtual machine was configured with 20 vCPUs (1 socket and 20 corespersocket) on a 4 socket, 10 core, hyper-threading enabled, host:

numa: Setting.vcpu.maxPerVirtualNode=20 to match cpuid.coresPerSocket

numaHost: 1 virtual nodes, 1 virtual sockets, 2 physical domains

Here we see vNUMA has respected the manual configuration and set the vNUMA advanced setting maxPerVirtualNode = 20 which doesn’t match the physical topology.  1 “virtual nodes” aka NUMA node is presented which spans 2 “physical domains,” aka pNUMA nodes.

So searching vmware.log for ‘numa’ and ‘numaHost’ will provide these details and again a reminder to let vNUMA provide the optimal configuration when possible.

SAP HANA Now Supported on VMware vSphere 5.5 for Production Scenarios

Eighteen months ago at SAP SAPPHIRE Madrid 2012, VMware presented impressive performance data showcasing SAP HANA running on vSphere. At that time, vSphere 5.1 received support from SAP to run SAP HANA for non-production scenarios.

After an extended and successful joint testing program with SAP, we’re proud to announce that vSphere 5.5 has achieved production support for SAP HANA.  Today, joint customers can run and scale single node SAP HANA databases up to 1TB in a virtual environment while taking advantage of all of the vSphere features they know and rely on to achieve high availability and improved Quality of Service for their mission critical workloads.

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Enabling and Monitoring Storage I/O Control

Storage I/O Control (SIOC) is one of those features that tend to get forgotten about. I’ve talked to many customers both while I was in the field doing architectures and deployments and still today and many either don’t know about the feature or never looked into it.

SIOC is extremely powerful, it can increase your consolidation ratios on the storage side, allowing more VM’s per datastore. Which leads to lower storage costs and less administrative overhead.

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Intro to Storage Resource Management

Most customers are aware of and are utilizing vSphere’s Resource Management capabilities in regards to compute and memory. On the contrary many of our customers, even the ones who own the licenses, aren’t utilizing the resource management capabilities on the storage side.

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Effect of VAAI on cloning with All Flash Arrays:

Cloning virtual machines is an area where VAAI can provide many advantages. Flash storage arrays provide excellent IO performance. We wanted to see what difference VAAI makes in virtual machine cloning operations for “All Flash Arrays”.

The following components were used for testing VAAI performance on an all Flash storage array:

  1. Dell R910 server with 40 cores and 256 GB RAM
  2. Pure FA-400 Flash Array with two shelves that included 44 238 GB Flash drives and 8.2 TB usable capacity.
  3. Centos Linux Virtual Machine with 4 vCPU, 8 GB RAM,  16 GB OS/Boot Disk & 500 GB Data Disk all on the Pure Storage Array
  4. SW ISCSI on dedicated 10GBPS ports.

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