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Code review for EXPLAIN patch. Fix some typos, make it behave sanely

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across multiple loops, get rid of the shaky assumption that exactly one
tuple is returned per node iteration.
This commit is contained in:
Tom Lane
2006-05-30 19:24:25 +00:00
parent 3993bd8e07
commit a18ebc5541
2 changed files with 113 additions and 76 deletions
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11
src/include/executor/instrument.h
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@@ -6,7 +6,7 @@
*
* Copyright (c) 2001-2006, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/include/executor/instrument.h,v 1.14 2006/05/30 14:01:58 momjian Exp $
* $PostgreSQL: pgsql/src/include/executor/instrument.h,v 1.15 2006/05/30 19:24:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -57,20 +57,19 @@ typedef struct Instrumentation
{
/* Info about current plan cycle: */
bool running; /* TRUE if we've completed first tuple */
bool sampling; /* Are we sampling in current iteration? */
instr_time starttime; /* Start time of current iteration of node */
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 */
double itercount; /* Plan node iterations this cycle */
double samplecount; /* Iterations in which we sampled runtime */
double nextsample; /* Next itercount to sample at */
/* 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);