Start/notes.ini Parameters/NSF_LogClose

NSF_LogClose

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Parameter: NSF_LogClose
Short description: Logs when NSF databases are removed from the database cache and closed – helpful for cache tuning (MaxEntries / MinEntries).

Profile

Parameter
NSF_LogClose
Category
Logging / Debug
Component
Server
Available since
10.0
Supported versions
10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
0 = off, 1 = one line per close, 2 = incl. reason (TTL, pressure, idle)

Description

When the database cache constantly closes NSFs and reopens them shortly afterward, performance suffers – but the root cause is hard to see without logging. NSF_LogClose=1 writes a line for every NSF close to the console log; NSF_LogClose=2 additionally includes the reason (cache full, TTL expired, idle timeout). This makes it possible to decide deliberately whether NSF_DbCache_Maxentries, NSF_DbCache_MinEntries, or idle timeouts need adjusting.

Example configuration

NSF_LogClose=2

Notes & pitfalls

  • Quickly generates a large number of log entries – enable only temporarily for tuning sessions.
  • Takes effect after a server restart.
  • Ideally combine the analysis with the show stat Database.DbCache* statistics.
  • For ongoing logging in production, consider using only level 1 and filtering to critical NSFs.