MAP Toolkit saturates low-bandwidth networks or causes the machine running MAP to reboot

Source:  Microsoft Assessment and Planning (MAP) Toolkit Team Blog

MAP creates a worker thread to request information from a target machine. The number of simultaneous worker threads created is dependent on CPU and Memory availability, but MAP has a cap that prevents it from maxing out a CPU and will throttle itself if it exceeds that cap. If MAP is installed on a machine with a lot of resources, it is possible for MAP to reach the maximum thread count of 300 for 64-bit and 200 for 32-bit. However, MAP does not track how much network bandwidth it is using and, therefore, may saturate networking resources between the machine running MAP and the target computers which can lead to the symptoms mentioned in the title.

You can use the method below to throttle MAP so it uses less system and network resources. If this workaround does not solve the problem, please email us at the address provided in the support section.

1. Shutdown MAP if it is running
2. Edit the %Program Files%\Microsoft Assessment and Planning Toolkit\bin\Microsoft.AssessmentPlatform.UI.Console.exe.config file and add the following lines into the “<appSettings>” section.

<add key="Microsoft.AssessmentPlatform.InventoryEngine.InventoryService.DefaultMaxThreadsX86" value="52" />
<add key="Microsoft.AssessmentPlatform.InventoryEngine.InventoryService.DefaultMaxThreads" value="52" />
<add key="Microsoft.AssessmentPlatform.InventoryEngine.InventoryService.DefaultMinThreads" value="3" />
<add key="Microsoft.AssessmentPlatform.InventoryEngine.InventoryService.MaxThreadsLowerBound" value="2" />

The first two lines will set the maximum number of machines to inventory at the same time. You can adjust the maximum value up or down as needed to maximize the performance while maintaining system stability. Changing these values may increase the inventory time.
The third line sets the minimum number of threads that MAP will use, changing this value is NOT recommended.

Author: Robert Smit [MVP]

Robert Smit is Senior Technical Evangelist and is a current Microsoft MVP in Clustering as of 2009. Robert has over 20 years experience in IT with experience in the educational, health-care and finance industries. Robert’s past IT experience in the trenches of IT gives him the knowledge and insight that allows him to communicate effectively with IT professionals who are trying to address real concerns around business continuity, disaster recovery and regulatory compliance issues. Robert holds the following certifications: MCT - Microsoft Certified Trainer, MCTS - Windows Server Virtualization, MCSE, MCSA and MCPS. He is an active participant in the Microsoft newsgroup community and is currently focused on Hyper-V, Failover Clustering, SQL Server, Azure and all things related to Cloud Computing and Infrastructure Optimalization. Follow Robert on Twitter @ClusterMVP Or follow his blog Linkedin Profile Http:// Robert is also capable of transferring his knowledge to others which is a rare feature in the field of IT. He makes a point of not only solving issues but also of giving on the job training of his colleagues. A customer says " Robert has been a big influence on our technical staff and I have to come to know him as a brilliant specialist concerning Microsoft Products. He was Capable with his in-depth knowledge of Microsoft products to troubleshoot problems and develop our infrastructure to a higher level. I would certainly hire him again in the future. " Details of the Recommendation: "I have been coordinating with Robert implementing a very complex system. Although he was primarily a Microsoft infrastructure specialist; he was able to understand and debug .Net based complext Windows applications and websites. His input to improve performance of applications proved very helpful for the success of our project

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