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Mop-up for wait event naming issues.

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Synchronize the event names for parallel hash join waits with other
event names, by getting rid of the slashes and dropping "-ing"
suffixes.  Rename ClogGroupUpdate to XactGroupUpdate, to match the
new SLRU name.  Move the ProcSignalBarrier event to the IPC category;
it doesn't belong under IO.

Also a bit more wordsmithing in the wait event documentation tables.

Discussion: https://postgr.es/m/4505.1589640417@sss.pgh.pa.us
This commit is contained in:
Tom Lane
2020-05-16 21:00:05 -04:00
parent 2c8dd05d6c
commit 3048898e73
6 changed files with 142 additions and 126 deletions
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22
src/backend/executor/nodeHash.c
View File

@ -255,7 +255,7 @@ MultiExecParallelHash(HashState *node)
* ExecHashTableCreate(), or someone else is doing that. Either
* way, wait for everyone to arrive here so we can proceed.
*/
BarrierArriveAndWait(build_barrier, WAIT_EVENT_HASH_BUILD_ALLOCATING);
BarrierArriveAndWait(build_barrier, WAIT_EVENT_HASH_BUILD_ALLOCATE);
/* Fall through. */
case PHJ_BUILD_HASHING_INNER:
@ -311,7 +311,7 @@ MultiExecParallelHash(HashState *node)
* counters.
*/
if (BarrierArriveAndWait(build_barrier,
WAIT_EVENT_HASH_BUILD_HASHING_INNER))
WAIT_EVENT_HASH_BUILD_HASH_INNER))
{
/*
* Elect one backend to disable any further growth. Batches
@ -603,7 +603,7 @@ ExecHashTableCreate(HashState *state, List *hashOperators, List *hashCollations,
* backend will be elected to do that now if necessary.
*/
if (BarrierPhase(build_barrier) == PHJ_BUILD_ELECTING &&
BarrierArriveAndWait(build_barrier, WAIT_EVENT_HASH_BUILD_ELECTING))
BarrierArriveAndWait(build_barrier, WAIT_EVENT_HASH_BUILD_ELECT))
{
pstate->nbatch = nbatch;
pstate->space_allowed = space_allowed;
@ -1076,7 +1076,7 @@ ExecParallelHashIncreaseNumBatches(HashJoinTable hashtable)
* tuples.
*/
if (BarrierArriveAndWait(&pstate->grow_batches_barrier,
WAIT_EVENT_HASH_GROW_BATCHES_ELECTING))
WAIT_EVENT_HASH_GROW_BATCHES_ELECT))
{
dsa_pointer_atomic *buckets;
ParallelHashJoinBatch *old_batch0;
@ -1186,7 +1186,7 @@ ExecParallelHashIncreaseNumBatches(HashJoinTable hashtable)
case PHJ_GROW_BATCHES_ALLOCATING:
/* Wait for the above to be finished. */
BarrierArriveAndWait(&pstate->grow_batches_barrier,
WAIT_EVENT_HASH_GROW_BATCHES_ALLOCATING);
WAIT_EVENT_HASH_GROW_BATCHES_ALLOCATE);
/* Fall through. */
case PHJ_GROW_BATCHES_REPARTITIONING:
@ -1199,7 +1199,7 @@ ExecParallelHashIncreaseNumBatches(HashJoinTable hashtable)
ExecParallelHashMergeCounters(hashtable);
/* Wait for the above to be finished. */
BarrierArriveAndWait(&pstate->grow_batches_barrier,
WAIT_EVENT_HASH_GROW_BATCHES_REPARTITIONING);
WAIT_EVENT_HASH_GROW_BATCHES_REPARTITION);
/* Fall through. */
case PHJ_GROW_BATCHES_DECIDING:
@ -1210,7 +1210,7 @@ ExecParallelHashIncreaseNumBatches(HashJoinTable hashtable)
* not helping.
*/
if (BarrierArriveAndWait(&pstate->grow_batches_barrier,
WAIT_EVENT_HASH_GROW_BATCHES_DECIDING))
WAIT_EVENT_HASH_GROW_BATCHES_DECIDE))
{
bool space_exhausted = false;
bool extreme_skew_detected = false;
@ -1260,7 +1260,7 @@ ExecParallelHashIncreaseNumBatches(HashJoinTable hashtable)
case PHJ_GROW_BATCHES_FINISHING:
/* Wait for the above to complete. */
BarrierArriveAndWait(&pstate->grow_batches_barrier,
WAIT_EVENT_HASH_GROW_BATCHES_FINISHING);
WAIT_EVENT_HASH_GROW_BATCHES_FINISH);
}
}
@ -1509,7 +1509,7 @@ ExecParallelHashIncreaseNumBuckets(HashJoinTable hashtable)
case PHJ_GROW_BUCKETS_ELECTING:
/* Elect one participant to prepare to increase nbuckets. */
if (BarrierArriveAndWait(&pstate->grow_buckets_barrier,
WAIT_EVENT_HASH_GROW_BUCKETS_ELECTING))
WAIT_EVENT_HASH_GROW_BUCKETS_ELECT))
{
size_t size;
dsa_pointer_atomic *buckets;
@ -1538,7 +1538,7 @@ ExecParallelHashIncreaseNumBuckets(HashJoinTable hashtable)
case PHJ_GROW_BUCKETS_ALLOCATING:
/* Wait for the above to complete. */
BarrierArriveAndWait(&pstate->grow_buckets_barrier,
WAIT_EVENT_HASH_GROW_BUCKETS_ALLOCATING);
WAIT_EVENT_HASH_GROW_BUCKETS_ALLOCATE);
/* Fall through. */
case PHJ_GROW_BUCKETS_REINSERTING:
@ -1573,7 +1573,7 @@ ExecParallelHashIncreaseNumBuckets(HashJoinTable hashtable)
CHECK_FOR_INTERRUPTS();
}
BarrierArriveAndWait(&pstate->grow_buckets_barrier,
WAIT_EVENT_HASH_GROW_BUCKETS_REINSERTING);
WAIT_EVENT_HASH_GROW_BUCKETS_REINSERT);
}
}

8
src/backend/executor/nodeHashjoin.c
View File

@ -327,7 +327,7 @@ ExecHashJoinImpl(PlanState *pstate, bool parallel)
if (hashtable->nbatch > 1)
ExecParallelHashJoinPartitionOuter(node);
BarrierArriveAndWait(build_barrier,
WAIT_EVENT_HASH_BUILD_HASHING_OUTER);
WAIT_EVENT_HASH_BUILD_HASH_OUTER);
}
Assert(BarrierPhase(build_barrier) == PHJ_BUILD_DONE);
@ -1135,14 +1135,14 @@ ExecParallelHashJoinNewBatch(HashJoinState *hjstate)
/* One backend allocates the hash table. */
if (BarrierArriveAndWait(batch_barrier,
WAIT_EVENT_HASH_BATCH_ELECTING))
WAIT_EVENT_HASH_BATCH_ELECT))
ExecParallelHashTableAlloc(hashtable, batchno);
/* Fall through. */
case PHJ_BATCH_ALLOCATING:
/* Wait for allocation to complete. */
BarrierArriveAndWait(batch_barrier,
WAIT_EVENT_HASH_BATCH_ALLOCATING);
WAIT_EVENT_HASH_BATCH_ALLOCATE);
/* Fall through. */
case PHJ_BATCH_LOADING:
@ -1162,7 +1162,7 @@ ExecParallelHashJoinNewBatch(HashJoinState *hjstate)
}
sts_end_parallel_scan(inner_tuples);
BarrierArriveAndWait(batch_barrier,
WAIT_EVENT_HASH_BATCH_LOADING);
WAIT_EVENT_HASH_BATCH_LOAD);
/* Fall through. */
case PHJ_BATCH_PROBING: