pgsql: Further hacking on performance of COPY OUT.

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От tgl@postgresql.org (Tom Lane)
Тема pgsql: Further hacking on performance of COPY OUT.
Дата
Msg-id 20060526225002.3EF559FA2CB@postgresql.org
обсуждение исходный текст
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Log Message:
-----------
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.

Modified Files:
--------------
    pgsql/src/backend/commands:
        copy.c (r1.265 -> r1.266)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/copy.c.diff?r1=1.265&r2=1.266)

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