DSMFillZeroWrite
Short Description
Waiting to fill a dynamic shared memory backing file with zeroes.
Additional Information
DSMFillZeroWrite is seen during the creation of Dynamic Shared Memory (DSM) segments. These segments are backed with a file on disk and this call covers the initialization when the memory and file are zero’d out.
How to reduce this wait
If there is significant wait on this event:
- Check excessive for server I/O load
- Check for server disk related errors
Additional Links
PostgreSQL documentation - The Statistics Collector
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