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PoolMon – Windows drivers | Microsoft Docs

 

PoolMon displays columns of data about pool memory allocations in a command window. Otherwise, the display might be truncated. The following sample PoolMon output is sorted by number of allocations. PoolMon updates its display every five seconds.

You cannot programmatically change the update rate. You can, however, force a refresh of the PoolMon results by clicking some keys, if the window PoolMon is running in has focus.

The data that PoolMon displays is collected and calculated by Windows whenever pool tagging is enabled. The values for allocations, free operations, and bytes used accumulate from the time that Windows starts, and increase monotonically until Windows is restarted. If a fred or component is started after Windows has already started, the values are accumulated from the last time that the driver or component started and reset only when the driver or system is restarted.

All pool memory allocations have tags, but they do not all have characteristic tag values. As a result, you cannot distinguish the statistics for that driver’s allocations from that of download poolmon.exe windows server 2003 free pool allocations.

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Download poolmon.exe windows server 2003 free. How to troubleshoot high memory use on systems with McAfee Enterprise products

 

PerfMon PerfMon offers several methods to save captured data. Click the Performance tab. Monitor the following over time: Under Physical Memory Kverify to see whether the Download poolmon.exe windows server 2003 free value decreases. If it decreases, you might have doqnload memory leak. If you identify a leak, click the Processes tab, and select View. NOTE: If you identify a process that is using high memory and not releasing it, use the following information to help troubleshoot the issue.

You might dpwnload need to provide a process dump to help identify the cause. Related Information See also:. You can download it from the Microsoft WDK site. Install PoolMon on the computer you want to test by following the Microsoft product instructions. Run PoolMon. Go to the PoolMon directory.

Starting PoolMon download poolmon.exe windows server 2003 free the data, so you must let it run until download poolmon.exe windows server 2003 free reaches a steady state and the data is reliable. Stop PoolMon, wait for 30 minutes, and then restart PoolMon.

When data collection is complete, examine the following values for each tag, and adobe pagemaker 7.0 part 2 free any that continually increase: Diff allocations minus free bytes Bytes number of bytes allocated minus number of bytes freed Examine the allocations that were increasing, and determine whether the bytes are now freed.

Allocations widows have still not been freed, or have continued to increase in doownload, are the likely cause. Under Create data logs, select only Performance dkwnloadand click Next.

Click Add. Wait for the data to run long enough to capture the information and collect the log while reproducing the issue.

 
 

Download poolmon.exe windows server 2003 free.How to use Memory Pool Monitor (Poolmon.exe) to troubleshoot kernel mode memory leaks

 
 

This article describes how to use the Memory Pool Monitor utility, Poolmon. Poolmon displays data that the operating system collects about memory allocations from the system paged and nonpaged kernel pools and about the memory pools used for Terminal Services sessions. The data is grouped by pool allocation tag. This information can be used by Microsoft Technical Support to find kernel mode memory leaks. A memory leak is caused by an application or by a process that allocates memory for use but that does not free the memory when the application or process finishes.

Therefore, available memory is completely used over time. Frequently, this condition causes the system to stop functioning correctly. In this case, the following events may be logged in the System log:. The first section that follows describes how to enable tag mode for using Poolmon.

The second section describes how to gather the information for troubleshooting by using Poolmon. Before running PoolMon, you must enable pool tagging and then restart your computer. The pool tagging feature collects and calculates statistics about pool memory sorted by the tag value of the memory allocation. Note It is not necessary to enable pool tagging in Windows Server as it is enabled by default.

To enable pool tagging on a Windows NT 4. To change the registry value that enables tag mode for Poolmon. Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly.

Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:.

Write down the value of GlobalFlag, or save the Session Manager key. Change the value to 0xhexadecimal. Note When you add the global flag value 0x, it only shows up as being 0x after it is added. It is important to add all of the leading zeros or some of the Poolmon information will not display on the output screen.

Note When you are finished debugging, change the GlobalFlag value back to the original value that you were instructed to write down in step 3. You can also use the Global Flags Editor Gflags. Note Because pool tagging is permanently enabled in Windows Server , the Enable Pool Tagging check box in the Global Flags dialog box is dimmed and commands to enable or disable pool tagging fail. To make the change by using Gflags. Click Start , click Run , type gflags. PoolMon displays pool tag information within a command window.

Use the following steps to copy and store the tag information. Repeat these steps for two hours at 15 minute intervals. Append each update to the end of the Notepad file. Note For Windows you must perform the following steps:. Click Start , click Run , type cmd, and then click OK. Click Start , point to Programs , and then click Command Prompt. Locate Poolmon. Change to the drive and folder where Poolmon.

On the Windows CD Poolmon. CAB file. Click Start , point to Programs , point to Accessories , and then click Notepad. Press the letter indicated below to perform the operation. It takes a few seconds for each command to work.

Here is a list of a few of the commands:. P – Sorts tag list by Paged, Non-Paged, or mixed. Note that P cycles through each one. B – Sorts tags by max byte usage. M – Sorts tags by max byte allocation. T – Sort tags alphabetically by tag name. E – Display Paged, Non-paged total across bottom. Cycles through. A – Sorts tags by allocation size. F – Sorts tags by “frees”. S – Sorts tags by the differences of allocs and frees. Q – Quit.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:. How to use Memory Pool Monitor Poolmon. In this case, the following events may be logged in the System log: More Information The first section that follows describes how to enable tag mode for using Poolmon.

Enabling Tag Mode Before running PoolMon, you must enable pool tagging and then restart your computer. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: How to back up and restore the registry in Windows Run Registry Editor.

Double-click the GlobalFlag value in the right pane. Restart the computer. Method 2: Use the Gflags. Select Enable Pool Tagging. Click Apply , and then click OK. Note When you are finished debugging, repeat the above steps to disable pool tagging. Right-click the title bar, and then click Properties. Type Poolmon. Press P until Poolmon displays the second column “type” and shows the value paged.

Press B to sort the columns from largest to smallest. On the Edit menu, click Paste. Repeat step 7 to look for the value nonpaged.

Repeat steps 8 – 11 to paste. For more information, click the following article number to view the article in the Microsoft Knowledge Base: How to find pool tags that are used by third-party drivers. Need more help? Expand your skills. Get new features first. A subscription to make the most of your time. Try one month free. Was this information helpful? Yes No. Any other feedback? The more you tell us, the more we can help. How can we improve? Send No thanks.

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