Simplify/speed up assertion cross-check in ginCompressPostingList().
I noticed while testing some other stuff that the CHECK_ENCODING_ROUNDTRIP
logic in ginCompressPostingList could account for over 50% of the runtime
of an INSERT with a GIN index. While that's not relevant to production
performance, it's still kind of annoying in a debug build. Replacing
the loop around short memcmp's with one long memcmp works just as well
and is significantly faster, at least on my machine.
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/ea7dace2aa21e79a7a8eb23c493bcd2057d9bd7e
Modified Files
--------------
src/backend/access/gin/ginpostinglist.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)