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Re: looks like apple fixed /etc/rc

From: "Jim C(dot) Nasby" <decibel(at)decibel(dot)org>
To: Theodore Petrosky <tedpet5(at)yahoo(dot)com>
Cc: pgsql -bugs <pgsql-bugs(at)postgresql(dot)org>
Subject: Re: looks like apple fixed /etc/rc
Date: 2005-04-29 23:09:08
Message-ID: 20050429230908.GT47820@decibel.org (view raw or flat)
Thread:
Lists: pgsql-bugs
That's interesting. On my powerbook, I had to comment out the sysctl -w
kern.sysv.shmmax line in /etc/rc. It appears that you can shrink shmmax
but not expand it. This meant that it would properly set it based on
/etc/syscttl.conf, but that (large) setting would then be over-written
by the subsiquent sysctl -w.

On Fri, Apr 29, 2005 at 09:39:55AM -0700, Theodore Petrosky wrote:
> I just updated to 10.3.9 and of course the /etc/rc was
> dinged. I opened the /etc/rc and found a change..
> 
> # System tuning
> sysctl -w kern.maxvnodes=$(echo $(sysctl -n
> hw.physmem) '33554432 / 512 * 1024 +p'|dc)
> if [ -f /etc/sysctl-macosxserver.conf ]; then
>         awk '{ if (!index($1, "#") && index($1, "="))
> print $1 }' < /etc/sysctl-macosxserver.conf | while
> read
>         do
>                 sysctl -w ${REPLY}
>         done
> fi
>         
> if [ -f /etc/sysctl.conf ]; then
>         awk '{ if (!index($1, "#") && index($1, "="))
> print $1 }' < /etc/sysctl.conf | while read
>         do
>                 sysctl -w ${REPLY}
>         done
> fi
> 
> sysctl -w kern.sysv.shmmax=4194304
> sysctl -w kern.sysv.shmmin=1
> sysctl -w kern.sysv.shmmni=32
> sysctl -w kern.sysv.shmseg=8
> sysctl -w kern.sysv.shmall=1024
> 
> It appears that apple is checking for etc/sysctl.conf
> before setting the sysctl values. so I created a
> etc/sysctl.conf with this inside:
> 
> kern.sysv.shmmax=33554432
> kern.sysv.shmmin=1
> kern.sysv.shmmni=32
> kern.sysv.shmseg=8
> kern.sysv.shmall=65536
> 
> I did not alter /etc/rc. postgresql starts up just
> fine. I hope this implys that the issue is resolved..
> 
> Ted
> 
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-- 
Jim C. Nasby, Database Consultant               decibel(at)decibel(dot)org 
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