diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2003-09-18 20:30:15 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2003-09-18 20:30:15 +0000 |
| commit | 689015748f8dd7267355eb6b7088684183fc1159 (patch) | |
| tree | 73c9e1886ac8280295dbe297a629f84eaf1dd3eb /doc/src/sgml/ref/postgres-ref.sgml | |
| parent | 723a9bde3335daa32e90bf804241eec8d1dda597 (diff) | |
| download | postgresql-689015748f8dd7267355eb6b7088684183fc1159.tar.gz postgresql-689015748f8dd7267355eb6b7088684183fc1159.zip | |
Put a tad more detail in the discussion of postmaster and postgres
signal handling.
Diffstat (limited to 'doc/src/sgml/ref/postgres-ref.sgml')
| -rw-r--r-- | doc/src/sgml/ref/postgres-ref.sgml | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/doc/src/sgml/ref/postgres-ref.sgml b/doc/src/sgml/ref/postgres-ref.sgml index 9c961492a9e..b80c9caafac 100644 --- a/doc/src/sgml/ref/postgres-ref.sgml +++ b/doc/src/sgml/ref/postgres-ref.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/ref/postgres-ref.sgml,v 1.35 2003/08/31 17:32:24 petere Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/ref/postgres-ref.sgml,v 1.36 2003/09/18 20:30:15 tgl Exp $ PostgreSQL documentation --> @@ -365,13 +365,29 @@ PostgreSQL documentation <title>Notes</title> <para> - To stop a running query use the <literal>SIGINT</literal> signal. To - tell <command>postgres</command> to reread the configuration file, - use a <literal>SIGHUP</literal> signal. The - <command>postmaster</command> uses <literal>SIGTERM</literal> + To cancel a running query, send the <literal>SIGINT</literal> signal + to the <command>postgres</command> process running that command. + </para> + + <para> + To tell <command>postgres</command> to reread the configuration file, + send a <literal>SIGHUP</literal> signal. Normally it's best to + <literal>SIGHUP</literal> the <command>postmaster</command> instead; + the <command>postmaster</command> will in turn <literal>SIGHUP</literal> + each of its children. But in some cases it might be desirable to have only + one <command>postgres</command> process reread the configuration file. + </para> + + <para> + The <command>postmaster</command> uses <literal>SIGTERM</literal> to tell a <command>postgres</command> process to quit normally and <literal>SIGQUIT</literal> to terminate without the normal cleanup. - These <emphasis>should not</emphasis> be used by users. + These signals <emphasis>should not</emphasis> be used by users. It is also + unwise to send <literal>SIGKILL</literal> to a <command>postgres</command> + process --- the <command>postmaster</command> will interpret this as + a crash in <command>postgres</command>, and will force all the sibling + <command>postgres</command> processes to quit as part of its standard + crash-recovery procedure. </para> </refsect1> |