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Make EXPLAIN (BUFFERS) track blocks dirtied, as well as those written.

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Also expose the new counters through pg_stat_statements.

Patch by me.  Review by Fujii Masao and Greg Smith.
This commit is contained in:
Robert Haas
2012-02-22 20:33:05 -05:00
parent f74f9a277c
commit 2254367435
12 changed files with 148 additions and 10 deletions
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14
doc/src/sgml/pgstatstatements.sgml
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@@ -99,6 +99,13 @@
<entry>Total number of shared blocks reads by the statement</entry>
</row>
<row>
<entry><structfield>shared_blks_dirtied</structfield></entry>
<entry><type>bigint</type></entry>
<entry></entry>
<entry>Total number of shared blocks dirtied by the statement</entry>
</row>
<row>
<entry><structfield>shared_blks_written</structfield></entry>
<entry><type>bigint</type></entry>
@@ -120,6 +127,13 @@
<entry>Total number of local blocks reads by the statement</entry>
</row>
<row>
<entry><structfield>local_blks_dirtied</structfield></entry>
<entry><type>bigint</type></entry>
<entry></entry>
<entry>Total number of local blocks dirtied by the statement</entry>
</row>
<row>
<entry><structfield>local_blks_written</structfield></entry>
<entry><type>bigint</type></entry>