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Provide a DSA area for all parallel queries.

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This will allow future parallel query code to dynamically allocate
storage shared by all participants.

Thomas Munro, with assorted changes by me.
This commit is contained in:
Robert Haas
2016-12-19 16:47:15 -05:00
parent 2604438472
commit e13029a5ce
5 changed files with 61 additions and 2 deletions
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6
doc/src/sgml/monitoring.sgml
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@ -818,7 +818,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<tbody>
<row>
<entry morerows="57"><literal>LWLock</></entry>
<entry morerows="58"><literal>LWLock</></entry>
<entry><literal>ShmemIndexLock</></entry>
<entry>Waiting to find or allocate space in shared memory.</entry>
</row>
@ -1069,6 +1069,10 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry><literal>predicate_lock_manager</></entry>
<entry>Waiting to add or examine predicate lock information.</entry>
</row>
<row>
<entry><literal>parallel_query_dsa</></entry>
<entry>Waiting for parallel query dynamic shared memory allocation lock.</entry>
</row>
<row>
<entry morerows="9"><literal>Lock</></entry>
<entry><literal>relation</></entry>