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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2005-10-16 21:22:12 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2005-10-16 21:22:12 +0000 |
| commit | 8ffdcbf23b36b4f908724015e79aceff338e0539 (patch) | |
| tree | d07e864b0b212e63aee92185fe47f31f436cef70 /doc/src | |
| parent | 649e74bf9031628800bbccda6d067c20fb304c2e (diff) | |
| download | postgresql-8ffdcbf23b36b4f908724015e79aceff338e0539.tar.gz postgresql-8ffdcbf23b36b4f908724015e79aceff338e0539.zip | |
Add note that some versions of OS X require SHMMAX to be an exact multiple
of 4096. Also add comment explaining why we don't suggest using
/etc/sysctl.conf to avoid needing to edit /etc/rc.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/runtime.sgml | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml index 0e88a6c297b..2aabdb83780 100644 --- a/doc/src/sgml/runtime.sgml +++ b/doc/src/sgml/runtime.sgml @@ -1,5 +1,5 @@ <!-- -$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.354 2005/10/15 20:12:33 neilc Exp $ +$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.355 2005/10/16 21:22:12 tgl Exp $ --> <chapter Id="runtime"> @@ -879,14 +879,27 @@ sysctl -w kern.sysv.shmmni sysctl -w kern.sysv.shmseg sysctl -w kern.sysv.shmall </programlisting> - In OS X 10.3, these commands have been moved to <filename>/etc/rc</> - and must be edited there. You'll need to reboot to make changes - take effect. Note that <filename>/etc/rc</> is usually - overwritten by OS X updates (such as 10.3.6 to 10.3.7) so you - should expect to have to redo your editing after each update. + In OS X 10.3 and later, these commands have been moved to + <filename>/etc/rc</> and must be edited there. Note that + <filename>/etc/rc</> is usually overwritten by OS X updates (such as + 10.3.6 to 10.3.7) so you should expect to have to redo your editing + after each update. In all versions, you'll need to reboot to make + changes take effect. </para> + +<!-- +It might appear that we could recommend putting sysctl settings into +/etc/sysctl.conf so that they aren't destroyed by OS version updates. +This does not work as of OS X 10.4.2, however, because /etc/rc +promptly overrides whatever SHM settings are read from sysctl.conf :-( +Perhaps someday we can recommend this ... +--> + <para> <varname>SHMALL</> is measured in 4KB pages on this platform. + Also note that some releases of OS X will reject attempts to + set <varname>SHMMAX</> to a value that isn't an exact multiple + of 4096. </para> </listitem> </varlistentry> |