Definition

Login VSI (Login Virtual Session Indexer)

Contributor(s): Eddie Lockhart

Login VSI (Login Virtual Session Indexer) is a software company that specializes in products information technology (IT) administrators can use to monitor and test loads for server-based computing, virtual desktop infrastructure (VDI) and desktop as a service (DaaS).

The company's three major products are Login VSI, Login PI and Login Automation Machine (AM). Each Login VSI product is compatible with Citrix XenApp and XenDesktop, VMware Horizon View and Microsoft Remote Desktop Services. They also work with DaaS providers, including Amazon Web Services and Microsoft Azure.

What Login VSI is used for

IT administrators can use Login VSI to create synthetic users that mimic the experience of real users to load test virtual desktops and published applications. It can help IT professionals assess the performance and scalability of their server-based computing, VDI or desktop as a service (DaaS) deployments. Login VSI measures scalability with a metric called VSImax and user experience with a metric called VSIbase. In DaaS deployments, Login VSI helps IT ensure that the provider is meeting its service-level agreements.

What Login PI is used for

Login PI is an active monitoring tool that constantly runs a single synthetic user within a VDI, server-based computing or DaaS deployment. This allows IT to continually monitor the deployment to ensure optimal performance and proactively address any issues that arise. It alerts IT anytime something affects the amount of time it takes users to log on to their desktops and applications, as well as if particular actions within an application start to take longer than usual.


Getting to know Login VSI for
Citrix XenApp and XenDesktop

Login PI publishes the alerts in Windows event logs. IT can integrate the alert data with other management tools, including Microsoft's System Center Operations Manager. Login PI's representational state transfer application programming interface allows IT to also integrate the data with programs such as Microsoft Excel. The product features a dashboard that shows user experience metrics, network latency trends and more. It is designed as a complement to traditional monitoring.

What Login AM is used for

IT can use Login AM to automate aspects of creating and updating master desktop images. If IT has to alter a desktop image by installing a new application, for example, instead of rebuilding the entire image from scratch to make the change, IT adds the application and Login AM automates the creation of the unchanged aspects of the desktop image, including carrying over settings.

Login VSI Enterprise Edition vs. Vendor Edition

The company bundles both Login VSI and Login PI in Login VSI Enterprise Edition. It also offers Login VSI Vendor Edition, which is designed for organizations that sell VDI or server-based computing products and DaaS providers. The vendors can use it to show how their products stack up to others, particularly when it comes to scalability and end-user experience.

The Vendor Edition consists of two programs, Tested With Login VSI and Validated By Login VSI. With the Tested With Login VSI Program, Login VSI gives the vendor a technical and marketing review of its product and promotes any white papers the vendor creates. Login VSI allows the vendor to use a Tested With Login VSI logo on its product.

With Validated By Login VSI, Login VSI also adds best practices, guidelines and reference architecture the vendor can use for its testing. Login VSI confirms the accuracy of the data in the tests and allows the vendor to use a Validated By Login VSI logo on its product. The company features a list of vendors in each category on its website.

History of Login VSI

VDI consultants began designing the original Login VSI product in 2008 with the goal of creating a tool that could test loads, stress levels, scalability and sizing, as well as perform benchmarking and change impact analysis. It worked with Microsoft Terminal Services, XenApp, XenDesktop and Horizon View.

The original product was free, but as more organizations adopted it, the company formed around it in 2009 and it became a legal entity in 2012. The company launched Login PI in 2016 and Login VSI Enterprise Edition in 2018. Pricing for all of its products vary depending on the number of users the buyer wants to simulate. Login VSI licenses its products on a subscription basis.

Login VSI's competition includes ControlUp, Goliath Technologies and Liquidware.

This was last updated in February 2018

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