For details, see Using UMDH to find user-mode memory leaks. ![]() Other memory leaks show up in the form of an increase in the virtual address space.Īfter you've determined which process is leaking memory, use the UMDH tool to determine the specific routine that's at fault. Some memory leaks appear in the data file in the form of an increase in private bytes allocated. The Virtual Bytes counter indicates the current size of the virtual address space that the process uses. The Private Bytes counter indicates the total amount of memory that a process has allocated, not including memory shared with other processes. You might also want to log the data to a file for later examination. You can configure the set of counters displayed on the. Counters represent various aspects of memory usage and system performance. Performance Monitor displays information by graphing the values of counters. To view a graph of memory usage, click on Performance Monitor in the configuration tree. Process > Virtual Bytes (for each process you wish to examine)Ĭhange the update time to 600 seconds to capture a graph of the leak over time. Launch Performance Monitor from the Start Menu. ![]() Process > Private Bytes (for each process you want to examine) The 'Standby' region contains information that may be used later but can also just be thrown away. It can also include private mappings that have been modified that dont need to be written to disk. This can include data that needs to be written to disk. ![]() Run Performance Monitor as Administrator. The 'Modified' region, logically enough, holds data that has been modified. If you suspect there's a user-mode memory leak but aren't sure which process causes it, use Performance Monitor to measure the memory usage of individual processes.
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