From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
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To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: COPY performance improvements. |
Date: | 2005-08-06 20:41:59 |
Message-ID: | 20050806204159.9796852B3D@svr1.postgresql.org |
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Lists: | pgsql-committers |
Log Message:
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COPY performance improvements. Avoid calling CopyGetData for each input
character, tighten the inner loops of CopyReadLine and CopyReadAttribute,
arrange to parse out all the attributes of a line in just one call instead
of one CopyReadAttribute call per attribute, be smarter about which client
encodings require slow pg_encoding_mblen() loops. Also, clean up the
mishmash of static variables and overly-long parameter lists in favor of
passing around a single CopyState struct containing all the state data.
Original patch by Alon Goldshuv, reworked by Tom Lane.
Modified Files:
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pgsql/src/backend/commands:
copy.c (r1.247 -> r1.248)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/copy.c.diff?r1=1.247&r2=1.248)
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