| From: | Heikki Linnakangas <heikki(dot)linnakangas(at)iki(dot)fi> |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Don't bother to lock bufmgr partitions in pg_buffercache. |
| Date: | 2016-09-29 10:17:27 |
| Message-ID: | E1bpYP9-0002nK-G1@gemulon.postgresql.org |
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| Lists: | pgsql-committers |
Don't bother to lock bufmgr partitions in pg_buffercache.
That makes the view a lot less disruptive to use on a production system.
Without the locks, you don't get a consistent snapshot across all buffers,
but that's OK. It wasn't a very useful guarantee in practice.
Ivan Kartyshov, reviewed by Tomas Vondra and Robert Haas.
Discusssion: <f9d6cab2-73a7-7a84-55a8-07dcb8516ae5(at)postgrespro(dot)ru>
Branch
------
master
Details
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http://git.postgresql.org/pg/commitdiff/6e654546fb61f62cc982d0c8f62241b3b30e7ef8
Modified Files
--------------
contrib/pg_buffercache/pg_buffercache_pages.c | 23 ++++-------------------
1 file changed, 4 insertions(+), 19 deletions(-)
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