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Document further existing locks as wait events

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Reported-by: Jeremy Schneider
Author: Michael Paquier
Discussion: https://postgr.es/m/CA+fnDAZaPCwfY8Lp-pfLnUGFAXRu1VfLyRgdup-L-kwcBj8MqQ@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2017-09-22 13:35:54 +02:00
parent 47f849a3c9
commit 885cab5811
1 changed files with 9 additions and 1 deletions
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10
doc/src/sgml/monitoring.sgml
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@ -845,7 +845,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<tbody> <tbody>
<row> <row>
<entry morerows="60"><literal>LWLock</></entry> <entry morerows="62"><literal>LWLock</></entry>
<entry><literal>ShmemIndexLock</></entry> <entry><literal>ShmemIndexLock</></entry>
<entry>Waiting to find or allocate space in shared memory.</entry> <entry>Waiting to find or allocate space in shared memory.</entry>
</row> </row>
@ -1030,6 +1030,14 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry><literal>OldSnapshotTimeMapLock</></entry> <entry><literal>OldSnapshotTimeMapLock</></entry>
<entry>Waiting to read or update old snapshot control information.</entry> <entry>Waiting to read or update old snapshot control information.</entry>
</row> </row>
<row>
<entry><literal>BackendRandomLock</></entry>
<entry>Waiting to generate a random number.</entry>
</row>
<row>
<entry><literal>LogicalRepWorkerLock</></entry>
<entry>Waiting for action on logical replication worker to finish.</entry>
</row>
<row> <row>
<entry><literal>CLogTruncationLock</></entry> <entry><literal>CLogTruncationLock</></entry>
<entry>Waiting to truncate the write-ahead log or waiting for write-ahead log truncation to finish.</entry> <entry>Waiting to truncate the write-ahead log or waiting for write-ahead log truncation to finish.</entry>