git.postgresql.org Git - postgresql.git/commit

git projects / postgresql.git / commit

Further hacking on performance of COPY OUT. It seems that fwrite()'s

author Tom Lane <tgl@sss.pgh.pa.us>

2006年5月26日 22:50:02 +0000 (22:50 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2006年5月26日 22:50:02 +0000 (22:50 +0000)

commit 4d63e267742a2afe481a34f4742c0551c6b0a112

tree 5a798d94dd3fd80f9fc22349f4cb01520db5ed01 tree

parent 223ae6957f76f356bda883d427812d9214394f84 commit | diff

Further hacking on performance of COPY OUT. It seems that fwrite()'s
per-call overhead is quite significant, at least on Linux: whatever
it's doing is more than just shoving the bytes into a buffer. Buffering
the data so we can call fwrite() just once per row seems to be a win.

src/backend/commands/copy.c diff | blob | blame | history

This is the main PostgreSQL git repository.

RSS Atom