From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Fix statistics breakage from bgwriter/checkpointer process split |
Date: | 2012-07-18 19:40:48 |
Message-ID: | E1Sra76-0001pO-RI@gemulon.postgresql.org |
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Lists: | pgsql-committers |
Fix statistics breakage from bgwriter/checkpointer process split.
ForwardFsyncRequest() supposed that it could only be called in regular
backends, which used to be true; but since the splitup of bgwriter and
checkpointer, it is also called in the bgwriter. We do not want to count
such calls in pg_stat_bgwriter.buffers_backend statistics, so fix things
so that they aren't.
(It's worth noting here that this implies an alarmingly large increase in
the expected amount of cross-process fsync request traffic, which may well
mean that the process splitup was not such a hot idea.)
Branch
------
REL9_2_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/1e9326d6a3efcb5648a85c1653cc263bc787efa0
Modified Files
--------------
src/backend/postmaster/checkpointer.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
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