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Update OS X shared memory documentation for 10.3.9 and later to use

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/etc/sysctl.conf.

Chris Campbell
This commit is contained in:
Bruce Momjian 2006-03-02 20:30:33 +00:00
parent 3fb582c3bc
commit 5e4bf929b3
1 changed files with 12 additions and 12 deletions
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24
doc/src/sgml/runtime.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.357 2005/11/04 23:14:01 petere Exp $ $PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.357.2.1 2006/03/02 20:30:33 momjian Exp $
--> -->
<chapter Id="runtime"> <chapter Id="runtime">
@ -887,19 +887,19 @@ sysctl -w kern.sysv.shmall
changes take effect. changes take effect.
</para> </para>
<!-- <para>
It might appear that we could recommend putting sysctl settings into In OS X 10.3.9 and later, the file <filename>/etc/sysctl.conf</>
/etc/sysctl.conf so that they aren't destroyed by OS version updates. allows shared memory setting to be saved across operating system
This does not work as of OS X 10.4.2, however, because /etc/rc upgrades, and is the recommended method for setting these
promptly overrides whatever SHM settings are read from sysctl.conf :-( parameters. When using this file, all five shared memory values
Perhaps someday we can recommend this ... must be set or the changes will be ignored.
--> </para>
<para> <para>
<varname>SHMALL</> is measured in 4KB pages on this platform. <varname>SHMALL</> is measured in 4KB pages on this platform,
Also note that some releases of OS X will reject attempts to and recent releases of OS X reject attempts to set
set <varname>SHMMAX</> to a value that isn't an exact multiple <varname>SHMALL</> and <varname>SHMMAX</> to a value
of 4096. that isn't an exact multiple of 4096.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>