What is a memory leak on a computer. What is a memory leak on a computer

2. In the case of computer security, a leak is the disclosure of confidential information. For example, Edward Snowden released classified information from the NSA to the mainstream media in 2013.

Diagnosing and Fixing Memory Leaks in Python

Fugue uses Python extensively throughout our SaaS cloud security product and in our support tools, due to its ease of use, extensive package library, and powerful language tools. One of the things we learned while creating complex software for the cloud is that a language is only as good as its debugging and profiling tools. Logic errors, CPU power spikes, and memory leaks are inevitable, but a good debugger, CPU profiler, and memory profiler can make finding these errors much easier and faster, allowing our developers to go back to building a dynamic Fugue cloud orchestration and enforcement system. Let’s look at a specific case.

In the fall, our metrics reported that a Python Fugue component called a floodlight was experiencing random reboots and instability after a few days of downtime. The memory usage analysis showed that the memory consumption of the spotlight increased monotonically and continuously, indicating a memory leak tracemalloc, a powerful memory tracking tool in the standard Python library, made it possible to quickly diagnose and repair the leak. We found that the memory leak was related to the use of requests, a popular third-party Python HTTP library. Rewriting the component to use urllib from the standard Python library eliminated the memory leak. We’ll go over the details in this blog post.


The metrics show the problem: Percentage of total system memory used by spotlight when using the request library.

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Memory Allocation in Python

In most scenarios, you don’t need to understand Python memory management other than knowing that the interpreter manages memory for you. However, when writing large, complex Python programs with high stability requirements, it’s worth looking behind the scenes to understand how to write code that works well with Python’s memory management algorithms. It’s worth noting that Python uses reference counting and garbage collection to free up memory blocks and free memory on the system only when certain internal requirements are met. A pure Python script will never have direct control over the memory allocation in the interpreter. If direct control over memory allocation is desired, the interpreter’s memory allocation can be bypassed by writing or using an extension.

Basically, Python is a garbage collector that uses reference counting. The interpreter automatically allocates memory for objects as they are created, and keeps track of the number of references to those objects in the data structure associated with the object itself. This memory will be freed when the reference count for these objects reaches zero. In addition, garbage collection will detect cycles and delete objects referenced only in cycles. Any byte of memory allocated in the Python interpreter can be freed between the two mechanisms, but no claims can be made about the memory allocated in extensions.

Freeing memory in Python does not immediately release memory at the system level. When the entire arena is marked free, its memory is freed by the Python interpreter and returned to the system. However, this can rarely happen due to memory fragmentation.

Due to these abstractions, memory usage in Python often exhibits watermark behavior, where peak memory usage determines memory usage for the remainder of the execution, regardless of whether or not memory is actively being used. Moreover, the relationship between “freeing” memory in code and returning to the system is unclear and unpredictable. This behavior makes it very difficult to fully understand the memory usage of complex Python programs.

The biggest enemy of PC memory is memory leakage. There are many reasons for a memory leak, but the most common is programming oversight.

How to Detect a Memory Leak

When your system is running low on memory, you will most likely see an on-screen warning message of “Memory low: Performance starts to slow and the system malfunctions.

You can find a memory leak by checking your system’s RAM usage. Running Windows Performance Monitor can help you find a memory leak. You won’t find the source of the leak with this method, but it will help you investigate if there’s a memory link.

To start Performance Monitor, hold down Windows Key + R simultaneously to open the Run command. Then enter mdsched.exe.

Then click OK and select Restart Now to check for problems. The test will start and may take several hours to complete. Follow the on-screen instructions after the test is complete to detect memory leaks.

The Consequences of Memory Leaks

The consequences depend on the use of client or server applications. Their scope is given below.

Client Applications (Desktops and Mobile Phones)

For them, the consequences are not very serious, since the allocated memory is freed when the application is closed. So there is no system instability. Some of the problems encountered by excessive memory usage may be:

  • Your system may start to slow down.
  • Applications on the computer may suddenly close.
  • Computer application code that allocates memory can crash and cause errors.

Server Applications

In this case, the memory leak problem increases as the server has to run for a long time without rebooting. The problems here are the same as with desktop applications. Memory is consumed for days, weeks, months and server performance starts to decline. Errors start popping up that cause the server to eventually stop working.

Outdated device drivers can cause various problems such as missing hardware device connection with code 45, missing D3DCOMPILER_47.dll file we discussed here, and so on.

Use the Windows 10 built-in tools

windows 10 memory leak 1

  1. Go to Search, type Memory Diagnostic Tool and open it.
  2. Select Restart Now and check for problems, and don’t forget to save your work before restarting.

Windows 10 has its own built-in diagnostic tools that are often sufficient to provide a thorough analysis to help determine the cause of the problem.

These types of tools scan your computer for potential memory problems, including memory leaks, and provide a precise diagnosis of any problems detected.

  1. Go to Search, type Resource Monitor and open it.
  2. It allows you to view data about the system in real time.

Check for driver updates

javascript memory leak

  1. Go to Search, type Device Manager and open it.
  2. Check for any driver that has a yellow exclamation mark next to it.
  3. Right-click it and select Update Driver Software…
  4. Follow the instructions on the wizard screen.

Outdated drivers can cause various problems in Windows 10, including memory leaks.

While an outdated driver may not necessarily affect any program and therefore leak memory, it may itself use more memory than it should.

But if you don’t know which driver should be updated, checking each driver individually is too laborious. Therefore, you should try a different method of updating drivers on Windows 10.

We strongly recommend DriverFix driver update tool to avoid permanent damage to your PC by manually downloading the wrong driver versions.

Once installed, this great tool will check installed driver versions against its cloud database with the latest versions and download updates automatically.

Just wait for the scan to finish.

Remember that updating drivers is an advanced procedure. If you are not careful, downloading the wrong driver versions can permanently damage your system.

However, we recommend that you download this driver update tool (100% safe and tested by us) to do it automatically. This way, you will avoid memory leakage and even permanent computer damage.

Intelligent Standby List Cleaner (ISLC) is a free tool offered by Wagnardsoft that will automatically empty your computer’s memory in standby mode based on several editable conditions.

What is a memory leak on a computer

The leakage can relate to any of the following:


1. A term used to describe a software problem that causes the loss of computer resources or hardware that is no longer being used. The leak may be caused by an abnormal program closure or an error. Typically, the term leak is used to describe a memory leak, which is a program that does not free up memory resources or saves information that is no longer used.

How to tell if your computer has a memory leak

When a leak occurs, you can see a decline in the performance of your computer or hardware device. For example, in the event of a memory leak, your program may continue to use memory until it is exhausted or causes a crash. Microsoft Windows users can identify memory leaks by opening the Windows Task Manager; if a program’s “memory usage” never stops growing, it is likely that the program is leaking memory.

You can temporarily fix the leak by closing and restarting the program, or restarting your computer or hardware device. To fix the leak permanently, install a hotfix.

Unchecking this option will confirm that you are not receiving messages from Windows. However, you can reverse this option by checking it if you need a suggestion from Windows.

Empty Standby Memory in Windows With RaMMap

In addition to monitoring memory usage, RaMMap can also be used to manually flush the readiness list.

  1. Right-click the RaMMap application file and then select Run as administrator.
  2. Select Empty and then Empty the readiness list.
  3. Your memory in standby mode should now be much smaller.

Empty RaMMap options

Clear Standby Memory With Intelligent Standby List Cleaner

Intelligent Standby List Cleaner (ISLC) is a free tool offered by Wagnardsoft that will automatically empty your computer’s memory in standby mode based on several editable conditions.

Open a web browser, go to the official website of the application forum, select Official Download here, then select Save File.

Intelligent Standby List Cleaner download page.

Go to the Downloads folder, right-click the ISLC 7z archive, and then select Run as administrator.

ISLC right-click menu on Windows 10.

Select Yes when the User Account Control window appears.

User Account Control dialog box in Windows 10.

Navigate to the folder, select OK, and then Extract.

ISLC self-extracting options.

After extraction, right-click Intelligent Standby List Cleaner ISLC and then select Run as administrator.

ISLC opens on Windows 10.

Select Yes when the UAC dialog appears.

User Account Control dialog box in Windows 10.

Select Clear list in standby to manually flush the system memory from standby. Change the values ​​for; The size of the list is at a minimum, and the amount of free memory is less than according to your requirements.

ISLC user interface.

Select Minimized Start to run ISLC in the background each time the system boots.

The freestandbymemory.bat script is another useful tool to help alleviate memory problems in Windows 10 standby mode. It runs automatically in the background every 3 minutes and clears standby memory if your computer’s physical memory drops below 1500MB. The script is free to download and is designed for Windows 10.

Solution 5. Disable Programs Running on Startup

Programs running on startup will also take up your memory. Many users solve this problem by simply disabling programs that are running at startup.

Step 1. Open the Task Manager and go to the Startup section.

Step 2. Select the running program you want to disable and click the Disable button.

Solution 6. Defrag Your Hard Drive

Defragmenting your hard drive not only optimizes your hard drive but also improves memory management. You can follow the steps below to defragment your hard disk.

Step 1. Click This PC in File Explorer.

Step 2. Right-click the disk you want to defragment, then go to the Tools tab and click Optimize.

Step 3. Select the disk you want to defragment and click the Analyze button.

Step 4. Restart the computer after the defragmentation is complete.

Well, you can use defragmentation software to optimize your hard drive.

You have been informed about the 6 memory leak fixes in Windows 10. Now it’s your turn to try.

You can find a memory leak by checking your system’s RAM usage. Running Windows Performance Monitor can help you find a memory leak. You won’t find the source of the leak with this method, but it will help you investigate if there’s a memory link.

What Is a Memory Leak?

A memory leak is characterized by the increasing amount of RAM consumed by one or more programs. In other words, the problematic program or programs continue to use up RAM. Even if you close the program, it may still use your computer’s RAM.

Some people assume that a memory leak is the same as a space leak, but this is not necessarily true. A memory leak is defined by a program that consumes an unnecessarily large amount of RAM while a memory leak is defined by a program that gradually increases the amount of RAM consumed. The key difference is that the space leaks eventually go away while the memory leaks do not. Leaving a memory leak unnoticed will gradually decrease the speed and performance of your computer.

How to Spot a Memory Leak

A memory leak can be easily detected using the Windows Task Manager. To start, press Ctr + Alt + Del to bring up the Task Manager. Then click on the “Memory” tab to sort your computer’s processes by those using the most RAM. If you notice a process that is using up an excessive amount of RAM, such as 1 GB or more, it could be causing a memory leak.

The good news is that memory leaks are easy to fix. While closing a program in the program interface may not solve the problem, you can force the program to quit in Task Manager. After locating the problematic program in Task Manager, left-click on it to select it. Then right-click on the newly highlighted program in Task Manager and select “End Task”. Windows will then force the program to close so that it no longer consumes excess RAM.

Memory leaks are all too common. Even if your PC is under a load of 16 GB of RAM, just one memory leak can seriously hurt its performance. However, by actively monitoring programs for memory leaks, you can stop them so that it does not reduce your computer’s performance.

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