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author | Ingo Schwarze <schwarze@openbsd.org> | 2014-04-16 18:59:43 +0000 |
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committer | Ingo Schwarze <schwarze@openbsd.org> | 2014-04-16 18:59:43 +0000 |
commit | 37ecaca9a370dbf93ffb6d065ef468fead354062 (patch) | |
tree | 5317bae5a5d2d03f05ed83c766f504dced413d65 /demandoc.1 | |
parent | db68d801221ec988797ac03a6ebe0b2f76c1c80d (diff) | |
download | mandoc-37ecaca9a370dbf93ffb6d065ef468fead354062.tar.gz |
Give the mlinks and keys tables a pageid index,
as suggested by jeremy@ and espie@.
The mlinks index speeds up basic apropos(1) searches by around 30%
because it speeds up the final SELECT FROM mlinks query by about 95%.
For large result sets, the overall speedup gets even larger, in the
extreme case of "apropos Nd~." bymore than 90%.
The keys index finally makes the apropos(1) -O option usable: It no longer
incurs relevant extra cost, while in the past it was embarrassingly slow.
This comes at a cost: Total database build times grow by about 5%,
and each index adds about 10% database size with -Q. I consider that
acceptable in view of the huge apropos(1) performance gains.
The -Q database for /usr/share/man still remains below 1 MB.
Diffstat (limited to 'demandoc.1')
0 files changed, 0 insertions, 0 deletions