PostgreSQL Source Code  git master
instrument.c File Reference
#include "postgres.h"
#include <unistd.h>
#include "executor/instrument.h"
Include dependency graph for instrument.c:

Go to the source code of this file.

Functions

static void BufferUsageAdd (BufferUsage *dst, const BufferUsage *add)
 
static void WalUsageAdd (WalUsage *dst, WalUsage *add)
 
InstrumentationInstrAlloc (int n, int instrument_options, bool async_mode)
 
void InstrInit (Instrumentation *instr, int instrument_options)
 
void InstrStartNode (Instrumentation *instr)
 
void InstrStopNode (Instrumentation *instr, double nTuples)
 
void InstrUpdateTupleCount (Instrumentation *instr, double nTuples)
 
void InstrEndLoop (Instrumentation *instr)
 
void InstrAggNode (Instrumentation *dst, Instrumentation *add)
 
void InstrStartParallelQuery (void)
 
void InstrEndParallelQuery (BufferUsage *bufusage, WalUsage *walusage)
 
void InstrAccumParallelQuery (BufferUsage *bufusage, WalUsage *walusage)
 
void BufferUsageAccumDiff (BufferUsage *dst, const BufferUsage *add, const BufferUsage *sub)
 
void WalUsageAccumDiff (WalUsage *dst, const WalUsage *add, const WalUsage *sub)
 

Variables

BufferUsage pgBufferUsage
 
static BufferUsage save_pgBufferUsage
 
WalUsage pgWalUsage
 
static WalUsage save_pgWalUsage
 

Function Documentation

◆ BufferUsageAccumDiff()

void BufferUsageAccumDiff ( BufferUsage dst,
const BufferUsage add,
const BufferUsage sub 
)

Definition at line 246 of file instrument.c.

249 {
250  dst->shared_blks_hit += add->shared_blks_hit - sub->shared_blks_hit;
254  dst->local_blks_hit += add->local_blks_hit - sub->local_blks_hit;
255  dst->local_blks_read += add->local_blks_read - sub->local_blks_read;
258  dst->temp_blks_read += add->temp_blks_read - sub->temp_blks_read;
261  add->blk_read_time, sub->blk_read_time);
263  add->blk_write_time, sub->blk_write_time);
268 }
#define INSTR_TIME_ACCUM_DIFF(x, y, z)
Definition: instr_time.h:115
int64 shared_blks_dirtied
Definition: instrument.h:28
int64 local_blks_hit
Definition: instrument.h:30
instr_time temp_blk_write_time
Definition: instrument.h:39
int64 local_blks_written
Definition: instrument.h:33
instr_time blk_write_time
Definition: instrument.h:37
instr_time temp_blk_read_time
Definition: instrument.h:38
int64 temp_blks_read
Definition: instrument.h:34
int64 shared_blks_read
Definition: instrument.h:27
int64 shared_blks_written
Definition: instrument.h:29
int64 temp_blks_written
Definition: instrument.h:35
instr_time blk_read_time
Definition: instrument.h:36
int64 local_blks_read
Definition: instrument.h:31
int64 local_blks_dirtied
Definition: instrument.h:32
int64 shared_blks_hit
Definition: instrument.h:26

References BufferUsage::blk_read_time, BufferUsage::blk_write_time, INSTR_TIME_ACCUM_DIFF, BufferUsage::local_blks_dirtied, BufferUsage::local_blks_hit, BufferUsage::local_blks_read, BufferUsage::local_blks_written, BufferUsage::shared_blks_dirtied, BufferUsage::shared_blks_hit, BufferUsage::shared_blks_read, BufferUsage::shared_blks_written, BufferUsage::temp_blk_read_time, BufferUsage::temp_blk_write_time, BufferUsage::temp_blks_read, and BufferUsage::temp_blks_written.

Referenced by ExplainExecuteQuery(), ExplainOneQuery(), InstrEndParallelQuery(), InstrStopNode(), pgss_planner(), and pgss_ProcessUtility().

◆ BufferUsageAdd()

static void BufferUsageAdd ( BufferUsage dst,
const BufferUsage add 
)
static

◆ InstrAccumParallelQuery()

void InstrAccumParallelQuery ( BufferUsage bufusage,
WalUsage walusage 
)

Definition at line 218 of file instrument.c.

219 {
220  BufferUsageAdd(&pgBufferUsage, bufusage);
221  WalUsageAdd(&pgWalUsage, walusage);
222 }
static void BufferUsageAdd(BufferUsage *dst, const BufferUsage *add)
Definition: instrument.c:226
static void WalUsageAdd(WalUsage *dst, WalUsage *add)
Definition: instrument.c:272
WalUsage pgWalUsage
Definition: instrument.c:22
BufferUsage pgBufferUsage
Definition: instrument.c:20

References BufferUsageAdd(), pgBufferUsage, pgWalUsage, and WalUsageAdd().

Referenced by _bt_end_parallel(), ExecParallelFinish(), and parallel_vacuum_process_all_indexes().

◆ InstrAggNode()

void InstrAggNode ( Instrumentation dst,
Instrumentation add 
)

Definition at line 169 of file instrument.c.

170 {
171  if (!dst->running && add->running)
172  {
173  dst->running = true;
174  dst->firsttuple = add->firsttuple;
175  }
176  else if (dst->running && add->running && dst->firsttuple > add->firsttuple)
177  dst->firsttuple = add->firsttuple;
178 
179  INSTR_TIME_ADD(dst->counter, add->counter);
180 
181  dst->tuplecount += add->tuplecount;
182  dst->startup += add->startup;
183  dst->total += add->total;
184  dst->ntuples += add->ntuples;
185  dst->ntuples2 += add->ntuples2;
186  dst->nloops += add->nloops;
187  dst->nfiltered1 += add->nfiltered1;
188  dst->nfiltered2 += add->nfiltered2;
189 
190  /* Add delta of buffer usage since entry to node's totals */
191  if (dst->need_bufusage)
192  BufferUsageAdd(&dst->bufusage, &add->bufusage);
193 
194  if (dst->need_walusage)
195  WalUsageAdd(&dst->walusage, &add->walusage);
196 }
double nfiltered2
Definition: instrument.h:88
double nfiltered1
Definition: instrument.h:87
double startup
Definition: instrument.h:82
WalUsage walusage
Definition: instrument.h:90
bool need_bufusage
Definition: instrument.h:70
double ntuples
Definition: instrument.h:84
BufferUsage bufusage
Definition: instrument.h:89
bool need_walusage
Definition: instrument.h:71
instr_time counter
Definition: instrument.h:76
double firsttuple
Definition: instrument.h:77
double ntuples2
Definition: instrument.h:85
double tuplecount
Definition: instrument.h:78

References BufferUsageAdd(), Instrumentation::bufusage, Instrumentation::counter, Instrumentation::firsttuple, INSTR_TIME_ADD, Instrumentation::need_bufusage, Instrumentation::need_walusage, Instrumentation::nfiltered1, Instrumentation::nfiltered2, Instrumentation::nloops, Instrumentation::ntuples, Instrumentation::ntuples2, Instrumentation::running, Instrumentation::startup, Instrumentation::total, Instrumentation::tuplecount, Instrumentation::walusage, and WalUsageAdd().

Referenced by ExecParallelReportInstrumentation(), and ExecParallelRetrieveInstrumentation().

◆ InstrAlloc()

Instrumentation* InstrAlloc ( int  n,
int  instrument_options,
bool  async_mode 
)

Definition at line 31 of file instrument.c.

32 {
33  Instrumentation *instr;
34 
35  /* initialize all fields to zeroes, then modify as needed */
36  instr = palloc0(n * sizeof(Instrumentation));
37  if (instrument_options & (INSTRUMENT_BUFFERS | INSTRUMENT_TIMER | INSTRUMENT_WAL))
38  {
39  bool need_buffers = (instrument_options & INSTRUMENT_BUFFERS) != 0;
40  bool need_wal = (instrument_options & INSTRUMENT_WAL) != 0;
41  bool need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
42  int i;
43 
44  for (i = 0; i < n; i++)
45  {
46  instr[i].need_bufusage = need_buffers;
47  instr[i].need_walusage = need_wal;
48  instr[i].need_timer = need_timer;
49  instr[i].async_mode = async_mode;
50  }
51  }
52 
53  return instr;
54 }
@ INSTRUMENT_TIMER
Definition: instrument.h:59
@ INSTRUMENT_BUFFERS
Definition: instrument.h:60
@ INSTRUMENT_WAL
Definition: instrument.h:62
int i
Definition: isn.c:73
void * palloc0(Size size)
Definition: mcxt.c:1230

References Instrumentation::async_mode, i, INSTRUMENT_BUFFERS, INSTRUMENT_TIMER, INSTRUMENT_WAL, Instrumentation::need_bufusage, Instrumentation::need_timer, Instrumentation::need_walusage, and palloc0().

Referenced by ExecInitNode(), explain_ExecutorStart(), InitResultRelInfo(), and pgss_ExecutorStart().

◆ InstrEndLoop()

void InstrEndLoop ( Instrumentation instr)

Definition at line 140 of file instrument.c.

141 {
142  double totaltime;
143 
144  /* Skip if nothing has happened, or already shut down */
145  if (!instr->running)
146  return;
147 
148  if (!INSTR_TIME_IS_ZERO(instr->starttime))
149  elog(ERROR, "InstrEndLoop called on running node");
150 
151  /* Accumulate per-cycle statistics into totals */
152  totaltime = INSTR_TIME_GET_DOUBLE(instr->counter);
153 
154  instr->startup += instr->firsttuple;
155  instr->total += totaltime;
156  instr->ntuples += instr->tuplecount;
157  instr->nloops += 1;
158 
159  /* Reset for next cycle (if any) */
160  instr->running = false;
163  instr->firsttuple = 0;
164  instr->tuplecount = 0;
165 }
#define ERROR
Definition: elog.h:35
#define INSTR_TIME_IS_ZERO(t)
Definition: instr_time.h:85
#define INSTR_TIME_GET_DOUBLE(t)
Definition: instr_time.h:132
#define INSTR_TIME_SET_ZERO(t)
Definition: instr_time.h:87
instr_time starttime
Definition: instrument.h:75

References Instrumentation::counter, elog(), ERROR, Instrumentation::firsttuple, INSTR_TIME_GET_DOUBLE, INSTR_TIME_IS_ZERO, INSTR_TIME_SET_ZERO, Instrumentation::nloops, Instrumentation::ntuples, Instrumentation::running, Instrumentation::starttime, Instrumentation::startup, Instrumentation::total, and Instrumentation::tuplecount.

Referenced by ExecParallelReportInstrumentation(), ExecReScan(), explain_ExecutorEnd(), ExplainNode(), pgss_ExecutorEnd(), report_triggers(), and show_modifytable_info().

◆ InstrEndParallelQuery()

void InstrEndParallelQuery ( BufferUsage bufusage,
WalUsage walusage 
)

Definition at line 208 of file instrument.c.

209 {
210  memset(bufusage, 0, sizeof(BufferUsage));
212  memset(walusage, 0, sizeof(WalUsage));
214 }
static BufferUsage save_pgBufferUsage
Definition: instrument.c:21
static WalUsage save_pgWalUsage
Definition: instrument.c:23
void WalUsageAccumDiff(WalUsage *dst, const WalUsage *add, const WalUsage *sub)
Definition: instrument.c:280
void BufferUsageAccumDiff(BufferUsage *dst, const BufferUsage *add, const BufferUsage *sub)
Definition: instrument.c:246

References BufferUsageAccumDiff(), pgBufferUsage, pgWalUsage, save_pgBufferUsage, save_pgWalUsage, and WalUsageAccumDiff().

Referenced by _bt_parallel_build_main(), parallel_vacuum_main(), and ParallelQueryMain().

◆ InstrInit()

void InstrInit ( Instrumentation instr,
int  instrument_options 
)

Definition at line 58 of file instrument.c.

59 {
60  memset(instr, 0, sizeof(Instrumentation));
61  instr->need_bufusage = (instrument_options & INSTRUMENT_BUFFERS) != 0;
62  instr->need_walusage = (instrument_options & INSTRUMENT_WAL) != 0;
63  instr->need_timer = (instrument_options & INSTRUMENT_TIMER) != 0;
64 }

References INSTRUMENT_BUFFERS, INSTRUMENT_TIMER, INSTRUMENT_WAL, Instrumentation::need_bufusage, Instrumentation::need_timer, and Instrumentation::need_walusage.

Referenced by ExecInitParallelPlan().

◆ InstrStartNode()

◆ InstrStartParallelQuery()

void InstrStartParallelQuery ( void  )

◆ InstrStopNode()

void InstrStopNode ( Instrumentation instr,
double  nTuples 
)

Definition at line 84 of file instrument.c.

85 {
86  double save_tuplecount = instr->tuplecount;
87  instr_time endtime;
88 
89  /* count the returned tuples */
90  instr->tuplecount += nTuples;
91 
92  /* let's update the time only if the timer was requested */
93  if (instr->need_timer)
94  {
95  if (INSTR_TIME_IS_ZERO(instr->starttime))
96  elog(ERROR, "InstrStopNode called without start");
97 
98  INSTR_TIME_SET_CURRENT(endtime);
99  INSTR_TIME_ACCUM_DIFF(instr->counter, endtime, instr->starttime);
100 
102  }
103 
104  /* Add delta of buffer usage since entry to node's totals */
105  if (instr->need_bufusage)
107  &pgBufferUsage, &instr->bufusage_start);
108 
109  if (instr->need_walusage)
110  WalUsageAccumDiff(&instr->walusage,
111  &pgWalUsage, &instr->walusage_start);
112 
113  /* Is this the first tuple of this cycle? */
114  if (!instr->running)
115  {
116  instr->running = true;
117  instr->firsttuple = INSTR_TIME_GET_DOUBLE(instr->counter);
118  }
119  else
120  {
121  /*
122  * In async mode, if the plan node hadn't emitted any tuples before,
123  * this might be the first tuple
124  */
125  if (instr->async_mode && save_tuplecount < 1.0)
126  instr->firsttuple = INSTR_TIME_GET_DOUBLE(instr->counter);
127  }
128 }
#define INSTR_TIME_SET_CURRENT(t)
Definition: instr_time.h:89
struct timespec instr_time
Definition: instr_time.h:83

References Instrumentation::async_mode, BufferUsageAccumDiff(), Instrumentation::bufusage, Instrumentation::bufusage_start, Instrumentation::counter, elog(), ERROR, Instrumentation::firsttuple, INSTR_TIME_ACCUM_DIFF, INSTR_TIME_GET_DOUBLE, INSTR_TIME_IS_ZERO, INSTR_TIME_SET_CURRENT, INSTR_TIME_SET_ZERO, Instrumentation::need_bufusage, Instrumentation::need_timer, Instrumentation::need_walusage, pgBufferUsage, pgWalUsage, Instrumentation::running, Instrumentation::starttime, Instrumentation::tuplecount, Instrumentation::walusage, Instrumentation::walusage_start, and WalUsageAccumDiff().

Referenced by AfterTriggerExecute(), ExecAsyncConfigureWait(), ExecAsyncNotify(), ExecAsyncRequest(), ExecCallTriggerFunc(), ExecProcNodeInstr(), ExecShutdownNode_walker(), MultiExecBitmapAnd(), MultiExecBitmapIndexScan(), MultiExecBitmapOr(), MultiExecHash(), standard_ExecutorFinish(), and standard_ExecutorRun().

◆ InstrUpdateTupleCount()

void InstrUpdateTupleCount ( Instrumentation instr,
double  nTuples 
)

Definition at line 132 of file instrument.c.

133 {
134  /* count the returned tuples */
135  instr->tuplecount += nTuples;
136 }

References Instrumentation::tuplecount.

Referenced by complete_pending_request().

◆ WalUsageAccumDiff()

void WalUsageAccumDiff ( WalUsage dst,
const WalUsage add,
const WalUsage sub 
)

Definition at line 280 of file instrument.c.

281 {
282  dst->wal_bytes += add->wal_bytes - sub->wal_bytes;
283  dst->wal_records += add->wal_records - sub->wal_records;
284  dst->wal_fpi += add->wal_fpi - sub->wal_fpi;
285 }
uint64 wal_bytes
Definition: instrument.h:53
int64 wal_fpi
Definition: instrument.h:52
int64 wal_records
Definition: instrument.h:51

References WalUsage::wal_bytes, WalUsage::wal_fpi, and WalUsage::wal_records.

Referenced by heap_vacuum_rel(), InstrEndParallelQuery(), InstrStopNode(), pgss_planner(), pgss_ProcessUtility(), and pgstat_flush_wal().

◆ WalUsageAdd()

static void WalUsageAdd ( WalUsage dst,
WalUsage add 
)
static

Definition at line 272 of file instrument.c.

273 {
274  dst->wal_bytes += add->wal_bytes;
275  dst->wal_records += add->wal_records;
276  dst->wal_fpi += add->wal_fpi;
277 }

References WalUsage::wal_bytes, WalUsage::wal_fpi, and WalUsage::wal_records.

Referenced by InstrAccumParallelQuery(), and InstrAggNode().

Variable Documentation

◆ pgBufferUsage

◆ pgWalUsage

◆ save_pgBufferUsage

BufferUsage save_pgBufferUsage
static

Definition at line 21 of file instrument.c.

Referenced by InstrEndParallelQuery(), and InstrStartParallelQuery().

◆ save_pgWalUsage

WalUsage save_pgWalUsage
static

Definition at line 23 of file instrument.c.

Referenced by InstrEndParallelQuery(), and InstrStartParallelQuery().