postgres.git / summary / log / commit / refs
commit 73797b7884ee1722127f27ecfcede99367139dc0
Author: Robert Haas <rhaas@postgresql.org>
Date: Wed Feb 28 16:46:26 2018 +0000
First released in: 11.0
Document LWTRANCHE_PARALLEL_HASH_JOIN.
Thomas Munro
Discussion: http://postgr.es/m/CAEepm=3g1hhbFzYkR_QT9RmBvsGX4UaeCtX-4Js8OOEMmFeaSQ@mail.gmail.com
doc/src/sgml/monitoring.sgml | 7 ++++++-
src/backend/storage/lmgr/lwlock.c | 1 +
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 82c015806e3..3bc4de57d5a 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -845,7 +845,7 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<tbody>
<row>
- <entry morerows="63"><literal>LWLock</literal></entry>
+ <entry morerows="64"><literal>LWLock</literal></entry>
<entry><literal>ShmemIndexLock</literal></entry>
<entry>Waiting to find or allocate space in shared memory.</entry>
</row>
@@ -1121,6 +1121,11 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser
<entry>Waiting to choose the next subplan during Parallel Append plan
execution.</entry>
</row>
+ <row>
+ <entry><literal>parallel_hash_join</literal></entry>
+ <entry>Waiting to allocate or exchange a chunk of memory or update
+ counters during Parallel Hash plan execution.</entry>
+ </row>
<row>
<entry morerows="9"><literal>Lock</literal></entry>
<entry><literal>relation</literal></entry>
diff --git a/src/backend/storage/lmgr/lwlock.c b/src/backend/storage/lmgr/lwlock.c
index 233606b4141..a6fda81feb6 100644
--- a/src/backend/storage/lmgr/lwlock.c
+++ b/src/backend/storage/lmgr/lwlock.c
@@ -520,6 +520,7 @@ RegisterLWLockTranches(void)
"shared_tuplestore");
LWLockRegisterTranche(LWTRANCHE_TBM, "tbm");
LWLockRegisterTranche(LWTRANCHE_PARALLEL_APPEND, "parallel_append");
+ LWLockRegisterTranche(LWTRANCHE_PARALLEL_HASH_JOIN, "parallel_hash_join");
/* Register named tranches. */
for (i = 0; i < NamedLWLockTrancheRequests; i++)
[parent: ce1663cdcdbd]