There is also the function timeofday(), which for historical
- reasons returns a text string rather than a timestamp value:
+ reasons returns a text string rather than a timestamp value:
SELECT timeofday();
Result: Sat Feb 17 19:07:32.000126 2001 EST
It is important to know that
CURRENT_TIMESTAMP and related functions return
the start time of the current transaction; their values do not
- change during the transaction. timeofday()
+ change during the transaction. This is considered a feature:
+ the intent is to allow a single transaction to have a consistent
+ notion of the current
time, so that multiple
+ modifications within the same transaction bear the same
+ timestamp. timeofday()
returns the wall-clock time and does advance during transactions.
Since the variables STATS_COMMAND_STRING,
- STATS_BLOCK_LEVEL,
- and STATS_ROW_LEVEL
- default to false, no statistics are actually collected
- in the default configuration. You must turn one or more of them on
- before you will get useful results from the statistical display
- functions.
+ STATS_BLOCK_LEVEL, and
+ STATS_ROW_LEVEL default to false,
+ very few statistics are collected in the default
+ configuration. Enabling one or more of these configuration
+ variables will significantly enhance the amount of useful data
+ produced by the statistics collector, at the expense of
+ additional run-time overhead.
|
pg_stat_activity
-
One row per server process, showing process ID, database,- user, and current query. The current query column is only available
- to superusers; for others it reads as null. (Note that because of
- the collector's reporting delay, current query will only be up-to-date
- for long-running queries.)
+ One row per server process, showing process
+
ID, database, user, current query, and the time at+ which the current query began execution. The columns that report
+ data on the current query are only available if the
+ STATS_COMMAND_STRING configuration option has
+ been enabled. Furthermore, these columns can only be accessed by
+ superusers; to other users, they always appear NULL. (Note that
+ because of the collector's reporting delay, current query will
+ only be up-to-date for long-running queries.)
|
- The pg_statio_ views are primarily useful to determine
- the effectiveness of the buffer cache. When the number of actual disk
- reads is much smaller than the number of buffer hits, then the cache
- is satisfying most read requests without invoking a kernel call.
+ The pg_statio_ views are primarily useful to
+ determine the effectiveness of the buffer cache. When the number
+ of actual disk reads is much smaller than the number of buffer
+ hits, then the cache is satisfying most read requests without
+ invoking a kernel call. However, these statistics do not give the
+ entire story: due to the way in which
PostgreSQL+ handles disk I/O, data that is not in the
+
PostgreSQL buffer cache may still reside in the+ kernel's I/O cache, and may therefore still be fetched without
+ requiring a physical read. Users interested in obtaining more
+ detailed information on
PostgreSQL I/O behavior are+ advised to use the
PostgreSQL statistics collector+ in combination with operating system utilities that allow insight
+ into the kernel's handling of I/O.
pg_stat_get_db_blocks_hit(oid)
bigint
- Number of disk block requests found in cache for database
+ Number of disk block fetch requests found in cache for database
set of integer
Set of currently active backend IDs (from 1 to N where N is the
- number of active backends). See usage example below.
+ number of active backends). See usage example below
pg_stat_get_backend_activity(integer)
text
- Current query of backend process (NULL if caller is not superuser)
+ Current query of backend process (NULL if caller is not
+ superuser, or STATS_COMMAND_STRING is not enabled)
+ |
+ pg_stat_get_backend_activity_start(integer)
+ text
+
+ The time at which the specified backend's currently executing query was
+ initiated (NULL if caller is not superuser, or
+ STATS_COMMAND_STRING is not enabled)
+
+
+
+
|
pg_stat_reset()
boolean
- Reset all currently collected statistics.
+ Reset all currently collected statistics
- Blocks_fetched minus blocks_hit gives the number of kernel
+ blocks_fetched minus
+ blocks_hit gives the number of kernel
read() calls issued for the table, index, or
database; but the actual number of physical reads is usually
lower due to kernel-level buffering.
STATS_COMMAND_STRING (boolean)
+
+ Enables the collection of statistics on the currently
+ executing command of each backend, along with the time at
+ which that query began execution. This option is off by
+ default. Note that even when enabled, this information is only
+ visible to the superuser, so it should not represent a
+ security risk. This data can be accessed via the
+ pg_stat_activity system view; refer
+ to the &cite-admin; for more information.
+
+
+
+
+
STATS_BLOCK_LEVEL (boolean)
STATS_ROW_LEVEL (boolean)
- Determines what information backends send to the statistics
- collector process: current commands, block-level activity
- statistics, or row-level activity statistics. All default to
- off. Enabling statistics collection costs a small amount of
- time per query, but is invaluable for debugging and
- performance tuning.
+ Enables the collection of block-level and row-level statistics
+ on database activity, respectively. These options are off by
+ default. This data can be accessed via the
+ pg_stat and
+ pg_statio family of system views;
+ refer to the &cite-admin; for more information.
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/catalog/heap.c,v 1.239 2003/01/08 22:06:20 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/catalog/heap.c,v 1.240 2003/03/20 03:34:55 momjian Exp $
*
*
* INTERFACE ROUTINES
attStruct->attstattarget = 0;
/* Change the column name to something that isn't likely to conflict */
- snprintf(newattname, NAMEDATALEN, "........pg.dropped.%d........", attnum);
+ snprintf(newattname, sizeof(newattname),
+ "........pg.dropped.%d........", attnum);
namestrcpy(&(attStruct->attname), newattname);
simple_heap_update(attr_rel, &tuple->t_self, tuple);
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.48 2003/03/06 22:54:49 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/catalog/namespace.c,v 1.49 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
elog(ERROR, "%s: not authorized to create temp tables",
DatabaseName);
- snprintf(namespaceName, NAMEDATALEN, "pg_temp_%d", MyBackendId);
+ snprintf(namespaceName, sizeof(namespaceName), "pg_temp_%d", MyBackendId);
namespaceId = GetSysCacheOid(NAMESPACENAME,
CStringGetDatum(namespaceName),
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.106 2003/03/03 04:37:37 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/cluster.c,v 1.107 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
* namespace from the old, or we will have problems with the TEMP
* status of temp tables.
*/
- snprintf(NewHeapName, NAMEDATALEN, "pg_temp_%u", tableOid);
+ snprintf(NewHeapName, sizeof(NewHeapName), "pg_temp_%u", tableOid);
OIDNewHeap = make_new_heap(tableOid, NewHeapName);
/*
Relation pg_index;
/* Create the new index under a temporary name */
- snprintf(newIndexName, NAMEDATALEN, "pg_temp_%u", attrs->indexOID);
+ snprintf(newIndexName, sizeof(newIndexName),
+ "pg_temp_%u", attrs->indexOID);
/*
* The new index will have primary and constraint status set to
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.91 2003/02/13 05:25:24 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/sequence.c,v 1.92 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, maxv);
+ snprintf(buf, sizeof(buf), INT64_FORMAT, maxv);
elog(ERROR, "%s.nextval: reached MAXVALUE (%s)",
sequence->relname, buf);
}
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, minv);
+ snprintf(buf, sizeof(buf), INT64_FORMAT, minv);
elog(ERROR, "%s.nextval: reached MINVALUE (%s)",
sequence->relname, buf);
}
bufm[100],
bufx[100];
- snprintf(bufv, 100, INT64_FORMAT, next);
- snprintf(bufm, 100, INT64_FORMAT, seq->min_value);
- snprintf(bufx, 100, INT64_FORMAT, seq->max_value);
+ snprintf(bufv, sizeof(bufv), INT64_FORMAT, next);
+ snprintf(bufm, sizeof(bufm), INT64_FORMAT, seq->min_value);
+ snprintf(bufx, sizeof(bufx), INT64_FORMAT, seq->max_value);
elog(ERROR, "%s.setval: value %s is out of bounds (%s,%s)",
sequence->relname, bufv, bufm, bufx);
}
char bufm[100],
bufx[100];
- snprintf(bufm, 100, INT64_FORMAT, new->min_value);
- snprintf(bufx, 100, INT64_FORMAT, new->max_value);
+ snprintf(bufm, sizeof(bufm), INT64_FORMAT, new->min_value);
+ snprintf(bufx, sizeof(bufx), INT64_FORMAT, new->max_value);
elog(ERROR, "DefineSequence: MINVALUE (%s) must be less than MAXVALUE (%s)",
bufm, bufx);
}
char bufs[100],
bufm[100];
- snprintf(bufs, 100, INT64_FORMAT, new->last_value);
- snprintf(bufm, 100, INT64_FORMAT, new->min_value);
+ snprintf(bufs, sizeof(bufs), INT64_FORMAT, new->last_value);
+ snprintf(bufm, sizeof(bufm), INT64_FORMAT, new->min_value);
elog(ERROR, "DefineSequence: START value (%s) can't be less than MINVALUE (%s)",
bufs, bufm);
}
char bufs[100],
bufm[100];
- snprintf(bufs, 100, INT64_FORMAT, new->last_value);
- snprintf(bufm, 100, INT64_FORMAT, new->max_value);
+ snprintf(bufs, sizeof(bufs), INT64_FORMAT, new->last_value);
+ snprintf(bufm, sizeof(bufm), INT64_FORMAT, new->max_value);
elog(ERROR, "DefineSequence: START value (%s) can't be greater than MAXVALUE (%s)",
bufs, bufm);
}
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, new->cache_value);
+ snprintf(buf, sizeof(buf), INT64_FORMAT, new->cache_value);
elog(ERROR, "DefineSequence: CACHE (%s) can't be <= 0",
buf);
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.67 2003/02/13 05:19:59 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/commands/tablecmds.c,v 1.68 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
/*
* Create the toast table and its index
*/
- snprintf(toast_relname, NAMEDATALEN, "pg_toast_%u", relOid);
- snprintf(toast_idxname, NAMEDATALEN, "pg_toast_%u_index", relOid);
+ snprintf(toast_relname, sizeof(toast_relname), "pg_toast_%u", relOid);
+ snprintf(toast_idxname, sizeof(toast_idxname), "pg_toast_%u_index", relOid);
/* this is pretty painful... need a tuple descriptor */
tupdesc = CreateTemplateTupleDesc(3, false);
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.202 2003/03/11 19:40:22 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.203 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
erm = (execRowMark *) palloc(sizeof(execRowMark));
erm->relation = relation;
erm->rti = rti;
- snprintf(erm->resname, 32, "ctid%u", rti);
+ snprintf(erm->resname, sizeof(erm->resname), "ctid%u", rti);
estate->es_rowMark = lappend(estate->es_rowMark, erm);
}
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.94 2003/03/15 16:18:25 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/libpq/hba.c,v 1.95 2003/03/20 03:34:55 momjian Exp $
*
*-------------------------------------------------------------------------
*/
char ident_query[80];
/* The query we send to the Ident server */
- snprintf(ident_query, 80, "%d,%d\n",
+ snprintf(ident_query, sizeof(ident_query), "%d,%d\n",
ntohs(remote_port), ntohs(local_port));
/* loop in case send is interrupted */
do
*
* Copyright (c) 2001, PostgreSQL Global Development Group
*
- * $Header: /cvsroot/pgsql/src/backend/postmaster/pgstat.c,v 1.31 2002/10/24 23:19:13 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/postmaster/pgstat.c,v 1.32 2003/03/20 03:34:56 momjian Exp $
* ----------
*/
#include "postgres.h"
beentry->databaseid = msg->m_databaseid;
beentry->procpid = msg->m_procpid;
beentry->userid = msg->m_userid;
+ beentry->activity_start_sec = 0;
+ beentry->activity_start_usec = 0;
MemSet(beentry->activity, 0, PGSTAT_ACTIVITY_SIZE);
/*
static void
pgstat_recv_activity(PgStat_MsgActivity *msg, int len)
{
+ PgStat_StatBeEntry *entry;
+
/*
* Here we check explicitly for 0 return, since we don't want to
* mangle the activity of an active backend by a delayed packed from a
if (pgstat_add_backend(&msg->m_hdr) != 0)
return;
- strncpy(pgStatBeTable[msg->m_hdr.m_backendid - 1].activity,
- msg->m_what, PGSTAT_ACTIVITY_SIZE);
+ entry = &(pgStatBeTable[msg->m_hdr.m_backendid - 1]);
+
+ strncpy(entry->activity, msg->m_what, PGSTAT_ACTIVITY_SIZE);
+
+ entry->activity_start_sec =
+ GetCurrentAbsoluteTimeUsec(&entry->activity_start_usec);
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/adt/nabstime.c,v 1.104 2003/02/22 05:57:45 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/adt/nabstime.c,v 1.105 2003/03/20 03:34:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
AbsoluteTime *i_end);
-/* GetCurrentAbsoluteTime()
- * Get the current system time.
+/*
+ * GetCurrentAbsoluteTime()
+ *
+ * Get the current system time. Set timezone parameters if not specified
+ * elsewhere. Define HasCTZSet to allow clients to specify the default
+ * timezone.
*
- * Returns the number of seconds since epoch (January 1 1970 GMT).
*/
AbsoluteTime
GetCurrentAbsoluteTime(void)
abstime2tm(GetCurrentTransactionStartTime(), &tz, tm, NULL);
}
-/* GetCurrentTimeUsec()
- * Get the transaction start time ("now()") broken down as a struct tm,
- * plus fractional-second and timezone info.
+/*
+ * GetCurrentAbsoluteTimeUsec()
+ *
+ * Get the current system time. Set timezone parameters if not specified
+ * elsewhere. Define HasCTZSet to allow clients to specify the default
+ * timezone.
+ *
+ * Returns the number of seconds since epoch (January 1 1970 GMT)
*/
void
GetCurrentTimeUsec(struct tm * tm, fsec_t *fsec, int *tzp)
extern Datum pg_stat_get_backend_dbid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_userid(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_backend_activity(PG_FUNCTION_ARGS);
+extern Datum pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_numbackends(PG_FUNCTION_ARGS);
extern Datum pg_stat_get_db_xact_commit(PG_FUNCTION_ARGS);
/*
* Built-in function for resetting the counters
- *
*/
Datum
pg_stat_reset(PG_FUNCTION_ARGS)
}
+Datum
+pg_stat_get_backend_activity_start(PG_FUNCTION_ARGS)
+{
+ PgStat_StatBeEntry *beentry;
+ int32 beid;
+ AbsoluteTime sec;
+ int usec;
+ Timestamp result;
+
+ beid = PG_GETARG_INT32(0);
+
+ if (!superuser())
+ PG_RETURN_NULL();
+
+ if ((beentry = pgstat_fetch_stat_beentry(beid)) == NULL)
+ PG_RETURN_NULL();
+
+ sec = beentry->activity_start_sec;
+ usec = beentry->activity_start_usec;
+
+ /*
+ * No time recorded for start of current query -- this is the case
+ * if the user hasn't enabled query-level stats collection.
+ */
+ if (sec == 0 && usec == 0)
+ PG_RETURN_NULL();
+
+ /*
+ * This method of converting "Unix time" (sec/usec since epoch) to a
+ * PostgreSQL timestamp is an ugly hack -- if you fix it, be sure to
+ * fix the similar hackery in timestamp.c
+ */
+#ifdef HAVE_INT64_TIMESTAMP
+ result = (((sec - ((date2j(2000, 1, 1) - date2j(1970, 1, 1)) * 86400))
+ * INT64CONST(1000000)) + usec);
+#else
+ result = (sec + (usec * 1.0e-6) - ((date2j(2000, 1, 1) -
+ date2j(1970, 1, 1)) * 86400));
+#endif
+
+ PG_RETURN_TIMESTAMP(result);
+}
+
+
Datum
pg_stat_get_db_numbackends(PG_FUNCTION_ARGS)
{
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.106 2003/01/07 22:23:17 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/backend/utils/error/elog.c,v 1.107 2003/03/20 03:34:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
* Prints the failure line of the COPY. Wow, what a hack! bjm
* Translator: Error message will be truncated at 31 characters.
*/
- snprintf(copylineno_buf, 32, gettext("copy: line %d, "), copy_lineno);
+ snprintf(copylineno_buf, sizeof(copylineno_buf),
+ gettext("copy: line %d, "), copy_lineno);
space_needed += strlen(copylineno_buf);
}
* translator: This string will be truncated at 47 characters
* expanded.
*/
- snprintf(errorstr_buf, 48, gettext("operating system error %d"),
- errnum);
+ snprintf(errorstr_buf, sizeof(errorstr_buf),
+ gettext("operating system error %d"), errnum);
str = errorstr_buf;
}
# Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
# Portions Copyright (c) 1994, Regents of the University of California
#
-# $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.185 2003/03/19 16:08:59 petere Exp $
+# $Header: /cvsroot/pgsql/src/bin/initdb/Attic/initdb.sh,v 1.186 2003/03/20 03:34:56 momjian Exp $
#
#-------------------------------------------------------------------------
pg_stat_get_backend_pid(S.backendid) AS procpid, \
pg_stat_get_backend_userid(S.backendid) AS usesysid, \
U.usename AS usename, \
- pg_stat_get_backend_activity(S.backendid) AS current_query \
+ pg_stat_get_backend_activity(S.backendid) AS current_query, \
+ pg_stat_get_backend_activity_start(S.backendid) AS query_start \
FROM pg_database D, \
(SELECT pg_stat_get_backend_idset() AS backendid) AS S, \
pg_shadow U \
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_backup_tar.c,v 1.34 2003/02/01 19:29:16 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_backup_tar.c,v 1.35 2003/03/20 03:34:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
char buf1[100],
buf2[100];
- snprintf(buf1, 100, INT64_FORMAT, (int64) len);
- snprintf(buf2, 100, INT64_FORMAT, (int64) th->pos);
+ snprintf(buf1, sizeof(buf1), INT64_FORMAT, (int64) len);
+ snprintf(buf2, sizeof(buf2), INT64_FORMAT, (int64) th->pos);
die_horribly(AH, modulename, "actual file length (%s) does not match expected (%s)\n",
buf1, buf2);
}
char buf1[100],
buf2[100];
- snprintf(buf1, 100, INT64_FORMAT, (int64) ctx->tarFHpos);
- snprintf(buf2, 100, INT64_FORMAT, (int64) ctx->tarNextMember);
+ snprintf(buf1, sizeof(buf1), INT64_FORMAT, (int64) ctx->tarFHpos);
+ snprintf(buf2, sizeof(buf2), INT64_FORMAT, (int64) ctx->tarNextMember);
ahlog(AH, 4, "moving from position %s to next member at file position %s\n",
buf1, buf2);
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, (int64) ctx->tarFHpos);
+ snprintf(buf, sizeof(buf), INT64_FORMAT, (int64) ctx->tarFHpos);
ahlog(AH, 4, "now at file position %s\n", buf);
}
char buf1[100],
buf2[100];
- snprintf(buf1, 100, INT64_FORMAT, (int64) ftello(ctx->tarFH));
- snprintf(buf2, 100, INT64_FORMAT, (int64) ftello(ctx->tarFHpos));
+ snprintf(buf1, sizeof(buf1), INT64_FORMAT, (int64) ftello(ctx->tarFH));
+ snprintf(buf2, sizeof(buf2), INT64_FORMAT, (int64) ftello(ctx->tarFHpos));
die_horribly(AH, modulename,
"mismatch in actual vs. predicted file position (%s vs. %s)\n",
buf1, buf2);
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, (int64) hPos);
+ snprintf(buf, sizeof(buf), INT64_FORMAT, (int64) hPos);
ahlog(AH, 3, "TOC Entry %s at %s (length %lu, checksum %d)\n",
tag, buf, (unsigned long) len, sum);
}
{
char buf[100];
- snprintf(buf, 100, INT64_FORMAT, (int64) ftello(ctx->tarFH));
+ snprintf(buf, sizeof(buf), INT64_FORMAT, (int64) ftello(ctx->tarFH));
die_horribly(AH, modulename,
"corrupt tar header found in %s "
"(expected %d, computed %d) file position %s\n",
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: catversion.h,v 1.180 2003/03/10 03:53:51 tgl Exp $
+ * $Id: catversion.h,v 1.181 2003/03/20 03:34:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
/* yyyymmddN */
-#define CATALOG_VERSION_NO 200303091
+#define CATALOG_VERSION_NO 200303191
#endif
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $Id: pg_proc.h,v 1.287 2003/03/14 04:43:52 tgl Exp $
+ * $Id: pg_proc.h,v 1.288 2003/03/20 03:34:56 momjian Exp $
*
* NOTES
* The script catalog/genbki.sh reads this file and generates .bki
DESCR("Statistics: User ID of backend");
DATA(insert OID = 1940 ( pg_stat_get_backend_activity PGNSP PGUID 12 f f t f s 1 25 "23" pg_stat_get_backend_activity - _null_ ));
DESCR("Statistics: Current query of backend");
+DATA(insert OID = 2094 ( pg_stat_get_backend_activity_start PGNSP PGUID 12 f f t f s 1 1114 "23" pg_stat_get_backend_activity_start - _null_));
+DESCR("Statistics: Start time for current query of backend");
DATA(insert OID = 1941 ( pg_stat_get_db_numbackends PGNSP PGUID 12 f f t f s 1 23 "26" pg_stat_get_db_numbackends - _null_ ));
DESCR("Statistics: Number of backends in database");
DATA(insert OID = 1942 ( pg_stat_get_db_xact_commit PGNSP PGUID 12 f f t f s 1 20 "26" pg_stat_get_db_xact_commit - _null_ ));
DATA(insert OID = 1944 ( pg_stat_get_db_blocks_fetched PGNSP PGUID 12 f f t f s 1 20 "26" pg_stat_get_db_blocks_fetched - _null_ ));
DESCR("Statistics: Blocks fetched for database");
DATA(insert OID = 1945 ( pg_stat_get_db_blocks_hit PGNSP PGUID 12 f f t f s 1 20 "26" pg_stat_get_db_blocks_hit - _null_ ));
-DESCR("Statistics: Block found in cache for database");
+DESCR("Statistics: Blocks found in cache for database");
DATA(insert OID = 1946 ( encode PGNSP PGUID 12 f f t f i 2 25 "17 25" binary_encode - _null_ ));
DESCR("Convert bytea value into some ascii-only text string");
*
* Copyright (c) 2001, PostgreSQL Global Development Group
*
- * $Id: pgstat.h,v 1.12 2003/01/09 18:00:24 tgl Exp $
+ * $Id: pgstat.h,v 1.13 2003/03/20 03:34:56 momjian Exp $
* ----------
*/
#ifndef PGSTAT_H
#define PGSTAT_H
+#include "utils/nabstime.h"
+
/* ----------
* Paths for the statistics files. The %s is replaced with the
* installations $PGDATA.
Oid userid;
int procpid;
char activity[PGSTAT_ACTIVITY_SIZE];
+ AbsoluteTime activity_start_sec;
+ int activity_start_usec;
} PgStat_StatBeEntry;
pg_locks | SELECT l.relation, l."database", l."transaction", l.pid, l."mode", l.granted FROM pg_lock_status() l(relation oid, "database" oid, "transaction" xid, pid integer, "mode" text, granted boolean);
pg_rules | SELECT n.nspname AS schemaname, c.relname AS tablename, r.rulename, pg_get_ruledef(r.oid) AS definition FROM ((pg_rewrite r JOIN pg_class c ON ((c.oid = r.ev_class))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (r.rulename <> '_RETURN'::name);
pg_settings | SELECT a.name, a.setting FROM pg_show_all_settings() a(name text, setting text);
- pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS current_query FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.usesysid));
+ pg_stat_activity | SELECT d.oid AS datid, d.datname, pg_stat_get_backend_pid(s.backendid) AS procpid, pg_stat_get_backend_userid(s.backendid) AS usesysid, u.usename, pg_stat_get_backend_activity(s.backendid) AS current_query, pg_stat_get_backend_activity_start(s.backendid) AS query_start FROM pg_database d, (SELECT pg_stat_get_backend_idset() AS backendid) s, pg_shadow u WHERE ((pg_stat_get_backend_dbid(s.backendid) = d.oid) AND (pg_stat_get_backend_userid(s.backendid) = u.usesysid));
pg_stat_all_indexes | SELECT c.oid AS relid, i.oid AS indexrelid, n.nspname AS schemaname, c.relname, i.relname AS indexrelname, pg_stat_get_numscans(i.oid) AS idx_scan, pg_stat_get_tuples_returned(i.oid) AS idx_tup_read, pg_stat_get_tuples_fetched(i.oid) AS idx_tup_fetch FROM (((pg_class c JOIN pg_index x ON ((c.oid = x.indrelid))) JOIN pg_class i ON ((i.oid = x.indexrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = 'r'::"char");
pg_stat_all_tables | SELECT c.oid AS relid, n.nspname AS schemaname, c.relname, pg_stat_get_numscans(c.oid) AS seq_scan, pg_stat_get_tuples_returned(c.oid) AS seq_tup_read, sum(pg_stat_get_numscans(i.indexrelid)) AS idx_scan, sum(pg_stat_get_tuples_fetched(i.indexrelid)) AS idx_tup_fetch, pg_stat_get_tuples_inserted(c.oid) AS n_tup_ins, pg_stat_get_tuples_updated(c.oid) AS n_tup_upd, pg_stat_get_tuples_deleted(c.oid) AS n_tup_del FROM ((pg_class c LEFT JOIN pg_index i ON ((c.oid = i.indrelid))) LEFT JOIN pg_namespace n ON ((n.oid = c.relnamespace))) WHERE (c.relkind = 'r'::"char") GROUP BY c.oid, n.nspname, c.relname;
pg_stat_database | SELECT d.oid AS datid, d.datname, pg_stat_get_db_numbackends(d.oid) AS numbackends, pg_stat_get_db_xact_commit(d.oid) AS xact_commit, pg_stat_get_db_xact_rollback(d.oid) AS xact_rollback, (pg_stat_get_db_blocks_fetched(d.oid) - pg_stat_get_db_blocks_hit(d.oid)) AS blks_read, pg_stat_get_db_blocks_hit(d.oid) AS blks_hit FROM pg_database d;
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