Task Manager Clear Cache Memory

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Jan 14, 2021 Restart Windows Explorer to Clear Memory 1. Press Ctrl + Alt + Del keys at the same time and select Task Manager from the listed options. 2.Find Explorer and click Restart. Oct 14, 2015 Question Memory being used does not equal tasks in task manager: Question my task manager and cmd prompt both shows that i have 2 memory ram slots, but i see only one in the back: Question All My RAM Cached: Question Half of my 16 Gigs of RAM is cached: Question Does cache latency really matter if not gaming and photo/video editing? How to clear ram cache memory, fix RAM cached memory too high Windows 10Hi guys, I showed up in this tutorial how to clean cache memory in windows 10.


Before Windows Server 2012, two primary potential issues caused system file cache to grow until available memory was almost depleted under certain workloads. When this situation results in the system being sluggish, you can determine whether the server is facing one of these issues.

Counters to monitor

  • MemoryLong-Term Average Standby Cache Lifetime (s) < 1800 seconds

  • MemoryAvailable Mbytes is low

  • MemorySystem Cache Resident Bytes

If MemoryAvailable Mbytes is low and at the same time MemorySystem Cache Resident Bytes is consuming significant part of the physical memory, you can use RAMMAP to find out what the cache is being used for.

System file cache contains NTFS metafile data structures

This problem is indicated by a very high number of active Metafile pages in RAMMAP output, as shown in the following figure. This problem might have been observed on busy servers with millions of files being accessed, thereby resulting in caching NTFS metafile data not being released from the cache.

The problem used to be mitigated by DynCache tool. In Windows Server 2012+, the architecture has been redesigned and this problem should no longer exist.

System file cache contains memory mapped files

This problem is indicated by very high number of active Mapped file pages in RAMMAP output. This usually indicates that some application on the server is opening a lot of large files using CreateFile API with FILE_FLAG_RANDOM_ACCESS flag set.

This issue is described in detail in KB article 2549369. FILE_FLAG_RANDOM_ACCESS flag is a hint for Cache Manager to keep mapped views of the file in memory as long as possible (until Memory Manager doesn't signal low memory condition). At the same time, this flag instructs Cache Manager to disable prefetching of file data.


This situation has been mitigated to some extent by working set trimming improvements in Windows Server 2012+, but the issue itself needs to be primarily addressed by the application vendor by not using FILE_FLAG_RANDOM_ACCESS. An alternative solution for the app vendor might be to use low memory priority when accessing the files. This can be achieved using the SetThreadInformation API. Pages that are accessed at low memory priority are removed from the working set more aggressively.

Clear Cache Memory Firefox

Cache Manager, starting in Windows Server 2016 further mitigates this by ignoring FILE_FLAG_RANDOM_ACCESS when making trimming decisions, so it is treated just like any other file opened without the FILE_FLAG_RANDOM_ACCESS flag (Cache Manager still honors this flag to disable prefetching of file data). You can still cause system cache bloat if you have large number of files opened with this flag and accessed in truly random fashion. It is highly recommended that FILE_FLAG_RANDOM_ACCESS not be used by applications.