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Add GUC variables to control keep-alive times for idle, interval, and

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Oliver Jowett
This commit is contained in:
Bruce Momjian
2005-07-30 15:17:26 +00:00
parent b2b6548c79
commit 1f54d43075
7 changed files with 399 additions and 7 deletions
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49
doc/src/sgml/runtime.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.339 2005/07/23 21:05:45 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.340 2005/07/30 15:17:18 momjian Exp $
-->
<chapter Id="runtime">
@ -894,6 +894,53 @@ SET ENABLE_SEQSCAN TO OFF;
</listitem>
</varlistentry>
<varlistentry id="guc-tcp-keepalives-idle" xreflabel="tcp_keepalives_idle">
<term><varname>tcp_keepalives_idle</varname> (<type>integer</type>)</term>
<indexterm>
<primary><varname>tcp_keepalives_idle</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
On systems that support the TCP_KEEPIDLE socket option, specifies the
number of seconds between sending keepalives on an otherwise idle
connection. A value of 0 uses the system default. If TCP_KEEPIDLE is
not supported, this parameter must be 0. This option is ignored for
connections made via a Unix-domain socket.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-tcp-keepalives-interval" xreflabel="tcp_keepalives_interval">
<term><varname>tcp_keepalives_interval</varname> (<type>integer</type>)</term>
<indexterm>
<primary><varname>tcp_keepalives_interval</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
On systems that support the TCP_KEEPINTVL socket option, specifies how
long, in seconds, to wait for a response to a keepalive before
retransmitting. A value of 0 uses the system default. If TCP_KEEPINTVL
is not supported, this parameter must be 0. This option is ignored
for connections made via a Unix-domain socket.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-tcp-keepalives-count" xreflabel="tcp_keepalives_count">
<term><varname>tcp_keepalives_count</varname> (<type>integer</type>)</term>
<indexterm>
<primary><varname>tcp_keepalives_count</> configuration parameter</primary>
</indexterm>
<listitem>
<para>
On systems that support the TCP_KEEPCNT socket option, specifies how
many keepalives may be lost before the connection is considered dead.
A value of 0 uses the system default. If TCP_KEEPINTVL is not
supported, this parameter must be 0.
</para>
</listitem>
</varlistentry>
</variablelist>
</sect3>
<sect3 id="runtime-config-connection-security">