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Performance Monitor ReportingRSS

ESX(i) Host Performance configuration and Reporting

How to analyze and compare two or more ESXTOP logs with perfmon (viktorious.nl)

Are you just looking how to compare two ESXTOP datasets in perfmon? Jump to the last paragraph of this article. Otherwise, continue reading… I’ve been doing some troubleshooting recently using my favorite tool “esxtop”. Esxtop is a very powerful tool whi ...
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“vSphere 5.5 ESXTOP quick overview for Troubleshooting” diagram available (running-system.com)

Last year I have published a diagram called “ESXTOP quick overview for Troubleshooting” with the most frequently-used ESXTOP metrics and thresholds. It was downloaded very often and there was a lot of positive feedback – so I decided to publish a revised ...
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Using esxtop to identify storage performance issues for ESX / ESXi (multiple versions) (1008205)

This article provides information about esxtop and latency statistics that can be used when troubleshooting performance issues with SAN-connected storage (Fibre Channel or iSCSI). To view the complete NAA identifier for each disk device in esxtop.

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How to check driver versions in ESXi (fnic, etc.)

I recently encountered some strange I/O issues with guests running on ESXi 5.0 U2 in a Cisco UCS environment that I have inherited.  While investigating the root cause it was brought to our attention that some of our UCS drivers might be out of date. ...
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How to identify if an ESXi host is booted from PXE?

Have you ever wanted to find out if an ESXi host is booted from PXE?

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vCPU configuration. Performance impact between virtual sockets and virtual cores?

A question that I frequently receive is if there is a difference in virtual machine performance if the virtual machine is created with multiple cores instead of selecting multiple sockets?

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Convert VMware NAA value to Frame and Device ID (for vMax and Symmetrix)

Found a script to convert the naa value to device id, but not return the frame info.  So I augmented it to parse that info out as well.

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Difference between cpu.usage and cpu.utilization counters for HostSystem object (2055995)

This article provides information on the differences between the cpu.usage and cpu.utilization counters for the HostSystem object.

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ESXi, syslog and logins

This blog posting, like many others, was prompted by a field request from a customer. The customer wanted to understand two things: When/How admins were logging into ESXi (DCUI or SSH) What were they doing when they were logged in

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How to use VMware VisualEsxtop

Esxtop is a powerful tool and you should be using it, if you are not then start today. It just got easier to use this powerful tool with the release of VisualEsxtop as a VMware Fling from the labs team. This allows admins an easier to understand and work ...
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Getting started with vscsiStats

I have had a few occasions recently to start using vscsiStats. For those of you who may be unfamiliar, this is a great tool for virtual machine disk I/O workload characterization. Have you ever wondered about the most common I/O size generated by the Gues ...
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Determining an SNMP OID to its MIB module listing, name and type (2054359)

This article provides current object identifier (OID) assignment information used in VMware products deploying IETF SNMP technology. This article is useful when: You need to find the VMware MIB that contains a particular SNMP object identifier (OID), f ...
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Commands to check if ESXi installable or ESXi Embedded

ESXi is the unified version of the VMware hypervisor, but it could be installed on a host in different way: Embedded: is a OEM version usually shipped with the host Installable: is the one available from the VMware download site PXE: is used in the A ...
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How to Run VMware's New Fling VisualEsxtop on Mac OS X

The folks over at VMware Labs continue to pump out awesome new Flings and just yesterday, they released another one called VistualEsxtop, which is an enhanced version of esxtop and resxtop. It is no surprise, the Fling was developed by VMware Engineers wo ...
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New VMware Fling VisualEsxtop

VisualEsxtop is an enhanced version of resxtop and esxtop. VisualEsxtop can connect to VMware vCenter Server or ESX hosts, and display ESX server stats with a better user interface and more advanced features.

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Using PowerCLI for Advanced Syslog Configuration Tasks

So for the time being I have put together two functions, Get-VMHostSyslogConfig and Set-VMHostSyslogConfig, to supplement what you can currently do with the following additional options: Include the ability to set protocol specific paths, e.g. ssl ...
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Munin plugin: ESXi CPU/memory usage

Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work. ...
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