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Windows 7 / Windows Server 2008 R2: Fault Tolerant Heap and Memory Management

Hello, and welcome to our second post in the Windows 7 launch series. This post is going to be a long one, so buckle in. We’re going to start with an overview of Fault Tolerant Heap, which is a new feature in Windows 7 and Windows Server 2008 R2 and then Read More...
Posted Friday, October 02, 2009 6:00 AM by CC Hameed | 5 Comments

Windows 7 / Windows Server 2008 R2: Upgrade Paths, Registry Enhancements, Crash Dumps and Page File Sizing

It’s October 1st, 2009! That means that it’s time to get started on our Windows 7 and Windows Server 2008 R2 Launch Series. Day One – let’s start at the very beginning, which is usually a very good place to start. Today we’re covering Upgrade Paths, Registry Read More...
Posted Thursday, October 01, 2009 6:00 AM by CC Hameed | 6 Comments

Two Minute Drill: Stack Basics

Welcome back AskPerf!  Carrying on with our debugging / architectural theme from the last couple of weeks, today’s topic is about the stack.  A stack is a way of storing information – a data structure.  When a new object is placed on the Read More...
Posted Friday, July 31, 2009 6:00 AM by CC Hameed | 1 Comments

Semaphores – More than Flag Waving

Good Morning AskPerf!  Today is the last in our series on Windows Synchronization Mechanisms.  Our topic today is Semaphore Objects.  A semaphore object is a kernel-mode synchronization object that maintains a count between zero and a maximum Read More...
Posted Tuesday, July 28, 2009 6:00 AM by CC Hameed | 3 Comments

The Basics of Mutexes and Spin Locks

Good Morning AskPerf! We’re continuing on with our mini-series on Synchronization Mechanisms today with a look at Mutexes. A mutex is a synchronization object. Mutexes ensure mutually exclusive (hence the term) access. In other words, while one thread Read More...
Posted Tuesday, July 21, 2009 6:00 AM by CC Hameed | 2 Comments

Interlocked Operations in a Nutshell

Good Morning AskPerf!  On Tuesday, we went over some very high-level concepts around synchronization mechanisms.  Today, we’re going to briefly dig into one of those mechanisms, Interlocked Operations, in a little more depth.  This isn’t Read More...
Posted Friday, July 17, 2009 6:00 AM by CC Hameed | 1 Comments

Synchronization Mechanisms 101: Concepts for Non-Programmers

Good morning AskPerf! I realize it’s been a couple of weeks or so since we’ve posted. The reason is that we’ve all been a bit busy trying to wrap up the end of our fiscal year, write our reviews and of course, there was the Fourth of July holiday in there Read More...
Posted Tuesday, July 14, 2009 6:00 AM by CC Hameed | 0 Comments

Managing the System Managed Page File

Hello again AskPerf!  Today’s post comes to us courtesy of Mike Morales, one of our Escalation Engineers here in Irving, TX.  For those of you who have been with AskPerf for a while, Mike wrote a post for us a few months ago on UMDH.EXE .  Read More...
Posted Tuesday, April 14, 2009 6:00 AM by CC Hameed | 1 Comments

PRF: Memory Management (Working Set Trimming)

MEMORY MANAGEMENT - WORKING SET TRIMMING Description: Working Set Trimming refers to a condition wherein all Working Sets are flushed to the disk. A Working Set is the amount of physical memory used by a process. Working Set Trimming is primarily seen Read More...
Posted Friday, April 10, 2009 9:18 AM by CC Hameed | 0 Comments

PRF: Perceived System Sluggishness

PERCEIVED SYSTEM SLUGGISHNESS Description: There are a number of factors which may cause a system to act sluggish, or appear to act sluggish. Scoping the Issue: Perfmon logs can be gathered on any Windows system to aid in troubleshooting perceived system Read More...
Posted Friday, April 10, 2009 9:18 AM by CC Hameed | 0 Comments

PRF: Memory Management (General Issues - Windows Vista +)

MEMORY MANAGEMENT (GENERAL: WINDOWS VISTA AND LATER) Description: Memory management is the term used to describe how Windows handles the manipulation and allocation of both virtual and physical memory resources. Physical memory is considered the total Read More...
Posted Friday, April 10, 2009 9:17 AM by CC Hameed | 0 Comments

PRF: Memory Management (Event ID 333)

MEMORY MANAGEMENT – EVENT ID 333 Description: The first thing to understand is what exactly an Event ID 333 is. The event ID 333 is a System event error log that occurs when the registry is unable to complete a flush operation to the disk. There are several Read More...
Posted Friday, April 10, 2009 9:17 AM by CC Hameed | 0 Comments

PRF: Memory Management (Large System Cache Issues)

MEMORY MANAGEMENT (LARGE SYSTEM CACHE ISSUES) Description: The file system cache resides in kernel address space. It is used to buffer access to the much slower hard drive. The file system cache will map and unmap sections of files based on access patterns, Read More...
Posted Friday, April 10, 2009 9:17 AM by CC Hameed | 0 Comments

PRF: Memory Leak / Resource Depletion

MEMORY LEAK / RESOURCE DEPLETION Description: A memory leak is a situation that occurs on a system when a process is consuming a memory resource and never levels off. Examples of a memory resource can be virtual memory, pool memory, handles or heap. Scoping Read More...
Posted Friday, April 10, 2009 9:16 AM by CC Hameed | 0 Comments

PRF: Memory Management (General Issues - pre-Windows Vista)

MEMORY MANAGEMENT (GENERAL: PRE-WINDOWS VISTA) Description: Memory management is the term used to describe how Windows handles the manipulation and allocation of both virtual and physical memory resources. Physical memory is considered the total of physical Read More...
Posted Friday, April 10, 2009 9:16 AM by CC Hameed | 0 Comments
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