If a service should not be using a lot of RAM and it is, you need to do more troubleshooting this is the point at which you might fire up Performance Monitor to gather more specific details.Surely many wanted to see monitoring of the CPU, GPU and RAM on their desktop. So it is important to look at other metrics, such as Hard Faults, to determine if there is a really a RAM-related performance issue on an Exchange 2010 machine. The thinking is that Exchange will use RAM to cache as much information as possible in order to improve overall performance. This is why you need to understand how the application is supposed to behave.įor example, Exchange 2010 often uses as much memory as you can throw at it this is by design. One common mistake it to use the "In Use" and "Available" metrics as the sole indicators for overall system health and to get concerned when particular processes appear to be eating too much RAM. Products such as Exchange use RAM to its fullest extent and cache portions of the product for faster access. With many of Microsoft's newer products, it is better to use as much RAM as possible as to leave it idle. You might think that having such a small amount of RAM marked as free in this 16 GB system might identify a major problem, but that is the case. As other processes need RAM, low priority pages from this pool are reallocated to other needs.įree - This value is how much RAM is currently available beyond what is in use. Windows manages this class of RAM by prioritizing each page that comes in. Standby - This memory contains cached data and code that is not actively in use but that may be called into action at some point. After a period of time, in order to ensure that the system makes the best use of available memory resources, modified pages that have not been accessed in a while might be moved to the standby category. As information is updated on these memory pages, those pages are marked as having been modified. Modified - As information is written into memory pages, it stays there while other processing goes on behind the scenes. Almost any device in the server can add to this metric. Hardware Reserved - This identifies the amount of memory that various hardware devices have set aside for their dedicated use. In Use - The amount of memory that is in use right now.Īvailable - Of the total physical memory in the system, this is how much is still available for allocation. Physical Memoryīelow the Processes section, you'll see a section called Physical Memory that contains this information: Private (KB) - This is the total amount of physical memory that is committed to this particular process but cannot be shared with another process. Shareable (KB) - This is the total amount of physical memory that is committed to this particular process but that can also be shared with another process. This number should be the total of the next two metrics, which are its components. Working Set (KB) - This is the amount of physical memory that is committed to this particular process. Hard faults are sometimes referred to as Page Faults.Ĭommit (KB) - This is the total amount of physical and virtual memory (page file) that is committed to this specific process. If you see hard faults on a regular basis (especially if the numbers are large), you should consider adding more RAM to the server. This is important because disk storage is much, much slower than RAM, so each time the system uses disk-based virtual RAM there is a significant performance penalty. A hard fault occurs every time the system uses the swap file on the disk. Hard Faults/sec - A hard fault does not necessarily indicate a critical error condition, though it may indicate that the server is in need of more RAM. PID - Process ID - This is the ID number associated with the process it is useful if you want to use other utilities to manage processes, or if you want to easily match up processes with Task Manager. This is the name of the process that is actively using the disk. The Memory tab's Processes section displays key metrics related to how the system's processes use memory. The tool look depends on the Windows version, but the overall feel is the same. You can do that from the command prompt and the run function by typing: resmon To monitor Windows memory consumption in real time you need to start the Resource monitor. Monitor Memory in Windows with Resource Monitor
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