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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 | a63a6bea52c160a0ae3a17b7dd4931b76f84e5bd (patch) | |
tree | d2bc193b7751bde58e3524649bd233e2105b46bd /demandoc.c | |
parent | 82295da1cbb8b8780637173094f99de1b14bb2e9 (diff) | |
download | mandoc-a63a6bea52c160a0ae3a17b7dd4931b76f84e5bd.tar.gz mandoc-a63a6bea52c160a0ae3a17b7dd4931b76f84e5bd.tar.zst mandoc-a63a6bea52c160a0ae3a17b7dd4931b76f84e5bd.zip |
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.
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