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PG-173: Added new WAL usage statistics.

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This commit is contained in:
Ibrar Ahmed
2021-02-02 15:50:33 +00:00
parent 12ba1e39d1
commit 8410572ce3
3 changed files with 46 additions and 6 deletions
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35
pg_stat_monitor.c
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@@ -21,7 +21,7 @@
PG_MODULE_MAGIC;
#define BUILD_VERSION "0.7.0"
#define PG_STAT_STATEMENTS_COLS 42 /* maximum of above */
#define PG_STAT_STATEMENTS_COLS 45 /* maximum of above */
#define PGSM_TEXT_FILE "/tmp/pg_stat_monitor_query"
#define PGUNSIXBIT(val) (((val) & 0x3F) + '0')
@@ -1000,6 +1000,11 @@ static void pgss_store(uint64 queryId,
e->counters.sysinfo.stime = stime;
if (sqlcode[0] != 0)
memset(&entry->counters.blocks, 0, sizeof(entry->counters.blocks));
#if PG_VERSION_NUM >= 130000
e->counters.walusage.wal_records += walusage->wal_records;
e->counters.walusage.wal_fpi += walusage->wal_fpi;
e->counters.walusage.wal_bytes += walusage->wal_bytes;
#endif
SpinLockRelease(&e->mutex);
}
}
@@ -1251,6 +1256,28 @@ pg_stat_monitor_internal(FunctionCallInfo fcinfo,
values[i++] = IntArrayGetTextDatum(tmp.resp_calls, MAX_RESPONSE_BUCKET);
values[i++] = Float8GetDatumFast(tmp.sysinfo.utime);
values[i++] = Float8GetDatumFast(tmp.sysinfo.stime);
#if PG_VERSION_NUM >= 130000
{
char buf[256];
Datum wal_bytes;
values[i++] = Int64GetDatumFast(tmp.walusage.wal_records);
values[i++] = Int64GetDatumFast(tmp.walusage.wal_fpi);
snprintf(buf, sizeof buf, UINT64_FORMAT, tmp.walusage.wal_bytes);
/* Convert to numeric. */
wal_bytes = DirectFunctionCall3(numeric_in,
CStringGetDatum(buf),
ObjectIdGetDatum(0),
Int32GetDatum(-1));
values[i++] = wal_bytes;
}
#else
nulls[i++] = true;
nulls[i++] = true;
nulls[i++] = true;
#endif
tuplestore_putvalues(tupstore, tupdesc, values, nulls);
}
free(query_txt);
@@ -2421,7 +2448,7 @@ static PlannedStmt *pgss_planner_hook(Query *parse, int opt, ParamListInfo param
{
if (planner_hook_next)
result = planner_hook_next(parse, query_string, cursorOptions, boundParams);
result = standard_planner(parse, query_string, cursorOptions, boundParams);
result = standard_planner(parse, query_string, cursorOptions, boundParams);
}
#else
if (planner_hook_next)
@@ -2587,7 +2614,7 @@ int
read_query_buffer(int bucket_id, uint64 queryid, char *query_txt)
{
int fd = 0;
int buf_len;
int buf_len = 0;
char file_name[1024];
unsigned char *buf = NULL;
int off = 0;
@@ -2711,7 +2738,7 @@ get_histogram_timings(PG_FUNCTION_ARGS)
{
int64 b_start = (index == 1)? 0 : exp(bucket_size * (index - 1));
int64 b_end = exp(bucket_size * index);
sprintf(range[index-1], "(%d - %d)}", b_start, b_end);
sprintf(range[index-1], "(%ld - %ld)}", b_start, b_end);
}
return TextArrayGetTextDatum(range, b_count, 1024);
}