Low Available RAM

If you have arrived here, then you have identified a low available RAM condition on your Windows computer. If this is not correct, then return to the Start of the Performance Guide. Available RAM Concepts When the counter “\Memory\Available MBytes" has a value less than 64, then the computer is low on available RAM. This…

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User Mode Versus Privileged Mode Processor Usage

You have arrived at this point in the adventure because you have identified high processor usage on your Windows computer. If this is not correct, then return to the Start of the Performance Guide. Threads (the worker bees of a process) can execute in one of two modes: User Mode or Privileged Mode This article…

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Choose Your Own Adventure: High Deferred Procedure Calls (DPCs) or High Interrupts

You have arrived here because you have identified a high amount (greater than 50%) of processor time (\Processor(*)\% Processor Time), a high amount (greater than 30%) of privileged time (kernel time) (\Processor(*)\% Privileged Time) and a high amount of deferred procedure calls (greater than 20%) (\Processor(*)\% DPC Time) or a high number of interrupts (greater…

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The Microsoft PFE Performance Guide: Start Here

Welcome to the Microsoft Premier Field Engineering (PFE) Windows performance analysis guide. This is a web of interconnected documents intended to assist Microsoft Premier Field Engineers (PFE), Microsoft Support Professionals, and IT Professionals with prescriptive guidance on how to diagnose Windows performance issues in production environments and provide steps toward resolution. This document assumes the…

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