![]() ![]() System file cache contains memory mapped files ![]() In Windows Server 2012 , the architecture has been redesigned and this problem should no longer exist. The problem used to be mitigated by DynCache tool. 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. ![]() This problem is indicated by a high number of active Metafile pages in RAMMAP output, as shown in the following figure. System file cache contains NTFS metafile data structures If Memory\Available Mbytes is low and at the same time Memory\System 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. Memory\Long-Term Average Standby Cache Lifetime (s) < 1800 seconds When this situation results in the system being sluggish, you can determine whether the server is facing one of these issues. Before Windows Server 2012, two primary potential issues caused system file cache to grow until available memory was almost depleted under certain workloads. ![]()
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