Start/notes.ini Parameters/FT_NO_COMPRESSED_DOC

FT_NO_COMPRESSED_DOC

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Parameter: FT_NO_COMPRESSED_DOC
Short description: Prevents compression of documents during full-text indexing – higher disk usage, but potentially faster FT searches.

Profile

Parameter
FT_NO_COMPRESSED_DOC
Category
Performance / Memory
Component
Server
Available since
9.0.1
Supported versions
9.0.1, 10.0, 11.0, 12.0, 14.0, 14.5, 14.5.1
GUI equivalent
notes.ini only (no GUI)
Possible values
0 = default (index text is compressed), 1 = stored uncompressed

Description

By default, Domino stores the document text extracted for FT indexing in compressed form. This saves disk space but costs additional CPU for decompression on every search. FT_NO_COMPRESSED_DOC=1 disables this compression: the index requires more disk space, in exchange for slightly faster search and highlight operations. Useful especially on servers with plenty of disk space, high search load, and low CPU usage.

Example configuration

FT_NO_COMPRESSED_DOC=1

Notes & pitfalls

  • The change only takes effect after a complete rebuild of the FT indexes (load updall -f).
  • The disk-space requirement of the *.ft directories can grow considerably – calculate beforehand.
  • On modern SSD/NVMe systems, the performance gain is usually small; measure before enabling.
  • On heavily loaded servers, evaluate first on a test database.