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| author | Bruce Momjian <bruce@momjian.us> | 2006-05-30 14:01:58 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2006-05-30 14:01:58 +0000 |
| commit | 87bd07d97989bafe63a029931a65512aca4ba531 (patch) | |
| tree | f527f2a76cccc4465b1aa103847a8905b05eed42 /src/include | |
| parent | 53d669e5c6fb88a85a875f5a5a4a821de1f5cda5 (diff) | |
| download | postgresql-87bd07d97989bafe63a029931a65512aca4ba531.tar.gz postgresql-87bd07d97989bafe63a029931a65512aca4ba531.zip | |
Make EXPLAIN sampling smarter, to avoid excessive sampling delay.
Martijn van Oosterhout
Diffstat (limited to 'src/include')
| -rw-r--r-- | src/include/executor/instrument.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/include/executor/instrument.h b/src/include/executor/instrument.h index e89a36f6591..fbf578d473f 100644 --- a/src/include/executor/instrument.h +++ b/src/include/executor/instrument.h @@ -6,7 +6,7 @@ * * Copyright (c) 2001-2006, PostgreSQL Global Development Group * - * $PostgreSQL: pgsql/src/include/executor/instrument.h,v 1.13 2006/03/05 15:58:56 momjian Exp $ + * $PostgreSQL: pgsql/src/include/executor/instrument.h,v 1.14 2006/05/30 14:01:58 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -61,17 +61,21 @@ typedef struct Instrumentation instr_time counter; /* Accumulated runtime for this node */ double firsttuple; /* Time for first tuple of this cycle */ double tuplecount; /* Tuples emitted so far this cycle */ + double samplecount; /* Samples collected this cycle */ /* Accumulated statistics across all completed cycles: */ double startup; /* Total startup time (in seconds) */ double total; /* Total total time (in seconds) */ double ntuples; /* Total tuples produced */ double nloops; /* # of run cycles for this node */ + double nsamples; /* # of samples taken */ + /* Tracking for sampling */ + bool sampling; /* Are we sampling this iteration */ + double nextsample; /* The next tuplecount we're going to sample */ } Instrumentation; extern Instrumentation *InstrAlloc(int n); extern void InstrStartNode(Instrumentation *instr); -extern void InstrStopNode(Instrumentation *instr, bool returnedTuple); -extern void InstrStopNodeMulti(Instrumentation *instr, double nTuples); +extern void InstrStopNode(Instrumentation *instr, double nTuples); extern void InstrEndLoop(Instrumentation *instr); #endif /* INSTRUMENT_H */ |