Tom Lane wrote:
This seems a bit awkwardly phrased:
+ <para>
+ Versions before 4.0 will require a kernel rebuild, see the
+ <systemitem class="osname">NetBSD</> and <systemitem
+ class="osname">OpenBSD</> instructions above, however the key word is
+ <literal>options</literal> (plural) in this case.
</para>
Perhaps
FreeBSD versions before 4.0 work like NetBSD and OpenBSD (see above),
except that the configuration file uses the key word "options"
instead of "option".
Yeah - much nicer.
Also, alphabetization would suggest putting the FreeBSD entry before the
other two, not after, so maybe that should be "see below".
Thanks - had not considered that!
Amended patch attached.
regards
Mark
--- runtime.sgml.orig Sat Jan 29 18:30:50 2005
+++ runtime.sgml Tue Feb 1 14:25:53 2005
@@ -4351,9 +4351,51 @@
<varlistentry>
<term><systemitem class="osname">FreeBSD</></term>
+ <indexterm><primary>FreeBSD</><secondary>IPC configuration</></>
+ <listitem>
+ <para>
+ The default settings are only suitable for small installations
+ (default <varname>SHMMAX</varname> is 32 MB). Changes can be made via
+ the <command>sysctl</command> or <command>loader</command> interfaces.
+ Firstly the ones that are settable using <command>sysctl</command>:
+<screen>
+<prompt>$</prompt> <userinput>systcl -w kern.ipc.shmall=32768</userinput>
+<prompt>$</prompt> <userinput>systcl -w kern.ipc.shmmax=134217728</userinput>
+<prompt>$</prompt> <userinput>systcl -w kern.ipc.semmap=256</userinput>
+</screen>
+ These to be saved between reboots in <filename>/etc/sysctl.conf.
+ </para>
+ <para>
+ The remaining sempahore settings are read only as far as
+ <command>sysctl</command> is concerned, but can be changed before boot
+ using the <command>loader</command> prompt:
+<screen>
+<prompt>(loader)</prompt> <userinput>set kern.ipc.semmni=256</userinput>
+<prompt>(loader)</prompt> <userinput>set kern.ipc.semmns=512</userinput>
+<prompt>(loader)</prompt> <userinput>set kern.ipc.semmnu=256</userinput>
+</screen>
+ Similarly these can be saved between reboots in
+ <filename>/boot/loader.conf</filename>.
+ </para>
+ <para>
+ You might also want to configure your kernel to lock shared
+ memory into RAM and prevent it from being paged out to swap.
+ Use the <command>sysctl</> setting
+ <literal>kern.ipc.shm_use_phys</>.
+ </para>
+ <para>
+ <systemitem class="osname">FreeBSD</> versions before 4.0 work like
+ <systemitem class="osname">NetBSD</> and <systemitem class="osname">
+ OpenBSD</> (see below), except that the configuration file uses the
+ key word "options" instead of "option".
+ </para>
+ </listitem>
+ </varlistentry>
+
+
+ <varlistentry>
<term><systemitem class="osname">NetBSD</></term>
<term><systemitem class="osname">OpenBSD</></term>
- <indexterm><primary>FreeBSD</><secondary>IPC configuration</></>
<indexterm><primary>NetBSD</><secondary>IPC configuration</></>
<indexterm><primary>OpenBSD</><secondary>IPC configuration</></>
<listitem>
@@ -4364,19 +4406,16 @@
the option <varname>SHMMAXPGS</> (in pages). The following
shows an example of how to set the various parameters:
<programlisting>
-options SYSVSHM
-options SHMMAXPGS=4096
-options SHMSEG=256
+option SYSVSHM
+option SHMMAXPGS=4096
+option SHMSEG=256
-options SYSVSEM
-options SEMMNI=256
-options SEMMNS=512
-options SEMMNU=256
-options SEMMAP=256
+option SYSVSEM
+option SEMMNI=256
+option SEMMNS=512
+option SEMMNU=256
+option SEMMAP=256
</programlisting>
- (On <systemitem class="osname">NetBSD</> and <systemitem
- class="osname">OpenBSD</> the key word is actually
- <literal>option</literal> singular.)
</para>
<para>
You might also want to configure your kernel to lock shared
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