diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 4728ca5cf46ba66961368b1ceedad25ba188d5df..e58dc18df35aa02034e1b9d93132add2059ce881 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -4288,10 +4288,10 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
</listitem>
</varlistentry>
- <varlistentry id="guc-track-iotiming" xreflabel="track_iotiming">
- <term><varname>track_iotiming</varname> (<type>boolean</type>)</term>
+ <varlistentry id="guc-track-io-timing" xreflabel="track_io_timing">
+ <term><varname>track_io_timing</varname> (<type>boolean</type>)</term>
<indexterm>
- <primary><varname>track_iotiming</> configuration parameter</primary>
+ <primary><varname>track_io_timing</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
@@ -4299,7 +4299,8 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv;
default, because it will repeatedly query the operating system for
the current time, which may cause significant overhead on some
platforms. You can use the <xref linkend="pgtesttiming"> tool to
- measure the overhead of timing on your system. Timing information is
+ measure the overhead of timing on your system.
+ I/O timing information is
displayed in <xref linkend="pg-stat-database-view">, in the output of
<xref linkend="sql-explain"> when the <literal>BUFFERS</> option is
used, and by <xref linkend="pgstatstatements">. Only superusers can
diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml
index 8378f039ff2da290742e7a8b1126741a61bdd93a..c9e75e4f6f91ad5edb2f23d46beb50682d05f344 100644
--- a/doc/src/sgml/monitoring.sgml
+++ b/doc/src/sgml/monitoring.sgml
@@ -155,7 +155,7 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
</para>
<para>
- The parameter <xref linkend="guc-track-iotiming"> enables monitoring
+ The parameter <xref linkend="guc-track-io-timing"> enables monitoring
of block read and write times.
</para>
diff --git a/doc/src/sgml/pgstatstatements.sgml b/doc/src/sgml/pgstatstatements.sgml
index 1dd42de7815542df1f4e0af06f0f475f38306547..622018e382e71e55210d31fcfbda77f101bdf0f9 100644
--- a/doc/src/sgml/pgstatstatements.sgml
+++ b/doc/src/sgml/pgstatstatements.sgml
@@ -161,7 +161,7 @@
<entry></entry>
<entry>
Total time the statement spent reading blocks, in milliseconds
- (if <xref linkend="guc-track-iotiming"> is enabled, otherwise zero)
+ (if <xref linkend="guc-track-io-timing"> is enabled, otherwise zero)
</entry>
</row>
@@ -171,7 +171,7 @@
<entry></entry>
<entry>
Total time the statement spent writing blocks, in milliseconds
- (if <xref linkend="guc-track-iotiming"> is enabled, otherwise zero)
+ (if <xref linkend="guc-track-io-timing"> is enabled, otherwise zero)
</entry>
</row>
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index ad5a97a3523ef9e128cf1ffda20cb194fc3a72e9..2141487475d839182b17897760cd9c5455aad438 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -67,7 +67,7 @@
bool zero_damaged_pages = false;
int bgwriter_lru_maxpages = 100;
double bgwriter_lru_multiplier = 2.0;
-bool track_iotiming = false;
+bool track_io_timing = false;
/*
* How many buffers PrefetchBuffer callers should try to stay ahead of their
@@ -441,12 +441,12 @@ ReadBuffer_common(SMgrRelation smgr, char relpersistence, ForkNumber forkNum,
instr_time io_start,
io_time;
- if (track_iotiming)
+ if (track_io_timing)
INSTR_TIME_SET_CURRENT(io_start);
smgrread(smgr, forkNum, blockNum, (char *) bufBlock);
- if (track_iotiming)
+ if (track_io_timing)
{
INSTR_TIME_SET_CURRENT(io_time);
INSTR_TIME_SUBTRACT(io_time, io_start);
@@ -1938,7 +1938,7 @@ FlushBuffer(volatile BufferDesc *buf, SMgrRelation reln)
buf->flags &= ~BM_JUST_DIRTIED;
UnlockBufHdr(buf);
- if (track_iotiming)
+ if (track_io_timing)
INSTR_TIME_SET_CURRENT(io_start);
smgrwrite(reln,
@@ -1947,7 +1947,7 @@ FlushBuffer(volatile BufferDesc *buf, SMgrRelation reln)
(char *) BufHdrGetBlock(buf),
false);
- if (track_iotiming)
+ if (track_io_timing)
{
INSTR_TIME_SET_CURRENT(io_time);
INSTR_TIME_SUBTRACT(io_time, io_start);
diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 47a18110c1d4a9eac69fd50707b8c736f1c4d515..d75ab430296897a48d6b8da18ffe947e5cb20528 100644
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -1019,11 +1019,11 @@ static struct config_bool ConfigureNamesBool[] =
NULL, NULL, NULL
},
{
- {"track_iotiming", PGC_SUSET, STATS_COLLECTOR,
- gettext_noop("Collects timing information for database IO activity."),
+ {"track_io_timing", PGC_SUSET, STATS_COLLECTOR,
+ gettext_noop("Collects timing statistics for database I/O activity."),
NULL
},
- &track_iotiming,
+ &track_io_timing,
false,
NULL, NULL, NULL
},
diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample
index 0ac7533bebd591ebe90d9bef17ec2c68c3e77340..8feedc4a19f3dda03050fe80b22c93f4944d330e 100644
--- a/src/backend/utils/misc/postgresql.conf.sample
+++ b/src/backend/utils/misc/postgresql.conf.sample
@@ -425,7 +425,7 @@
#track_activities = on
#track_counts = on
-#track_iotiming = off
+#track_io_timing = off
#track_functions = none # none, pl, all
#track_activity_query_size = 1024 # (change requires restart)
#update_process_title = on
diff --git a/src/include/storage/bufmgr.h b/src/include/storage/bufmgr.h
index d72bad9f56143b36650a80fc1e16fcecd3d63fbd..17fc7cb9420b878a1f9f80260c72a5a908a573b5 100644
--- a/src/include/storage/bufmgr.h
+++ b/src/include/storage/bufmgr.h
@@ -48,7 +48,7 @@ extern PGDLLIMPORT int NBuffers;
extern bool zero_damaged_pages;
extern int bgwriter_lru_maxpages;
extern double bgwriter_lru_multiplier;
-extern bool track_iotiming;
+extern bool track_io_timing;
extern int target_prefetch_pages;
/* in buf_init.c */