diff options
| author | Fujii Masao <fujii@postgresql.org> | 2024-07-10 15:56:07 +0900 |
|---|---|---|
| committer | Fujii Masao <fujii@postgresql.org> | 2024-07-10 15:56:07 +0900 |
| commit | 05506510de6ae24ba6de00cef2f458920c8a72ea (patch) | |
| tree | 6931a7e11e845c950b66499f53fd2407d1d2a6f4 /doc/src | |
| parent | d898665bf7591514158954038ac43cea3240beaa (diff) | |
| download | postgresql-05506510de6ae24ba6de00cef2f458920c8a72ea.tar.gz postgresql-05506510de6ae24ba6de00cef2f458920c8a72ea.zip | |
doc: Update track_io_timing documentation to mention pg_stat_io.
The I/O timing information collected when track_io_timing is
enabled is now documented to appear in the pg_stat_io view,
which was previously not mentioned.
This commit also enhances the description of track_io_timing
to clarify that it monitors not only block read and write
but also block extend and fsync operations. Additionally,
the description of track_wal_io_timing has been improved
to mention both WAL write and WAL fsync monitoring.
Backpatch to v16 where pg_stat_io was added.
Author: Hajime Matsunaga
Reviewed-by: Melanie Plageman, Nazir Bilal Yavuz, Fujii Masao
Discussion: https://postgr.es/m/TYWPR01MB10742EE4A6F34C33061429D38A4D52@TYWPR01MB10742.jpnprd01.prod.outlook.com
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 4 | ||||
| -rw-r--r-- | doc/src/sgml/monitoring.sgml | 4 |
2 files changed, 5 insertions, 3 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index f627a3e63cd..4a0c9ba97dd 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -8319,7 +8319,9 @@ COPY postgres_log FROM '/full/path/to/logfile.csv' WITH csv; measure the overhead of timing on your system. I/O timing information is displayed in <link linkend="monitoring-pg-stat-database-view"> - <structname>pg_stat_database</structname></link>, in the output of + <structname>pg_stat_database</structname></link>, + <link linkend="monitoring-pg-stat-io-view"> + <structname>pg_stat_io</structname></link>, in the output of <xref linkend="sql-explain"/> when the <literal>BUFFERS</literal> option is used, in the output of <xref linkend="sql-vacuum"/> when the <literal>VERBOSE</literal> option is used, by autovacuum diff --git a/doc/src/sgml/monitoring.sgml b/doc/src/sgml/monitoring.sgml index 991f6299075..9ca74348c7f 100644 --- a/doc/src/sgml/monitoring.sgml +++ b/doc/src/sgml/monitoring.sgml @@ -180,12 +180,12 @@ postgres 27093 0.0 0.0 30096 2752 ? Ss 11:34 0:00 postgres: ser <para> The parameter <xref linkend="guc-track-io-timing"/> enables monitoring - of block read and write times. + of block read, write, extend, and fsync times. </para> <para> The parameter <xref linkend="guc-track-wal-io-timing"/> enables monitoring - of WAL write times. + of WAL write and fsync times. </para> <para> |