Re: looks like apple fixed /etc/rc

I don't doubt that it works for some people. I also know that it doesn't
work on my powerbook as of the last OS update.

On Sat, Apr 30, 2005 at 11:42:36AM -0700, Theodore Petrosky wrote:
> Jim,
>
> this is copied from /etc/rc...
> \
> if [ -f /etc/sysctl.conf ]; then
> awk '{ if (!index($1, "#") && index($1, "="))
> print $1 }' < /etc/sysctl.conf | while read
> do
> sysctl -w ${REPLY}
> done
> fi
>
> sysctl -w kern.sysv.shmmax=4194304
> sysctl -w kern.sysv.shmmin=1
> sysctl -w kern.sysv.shmmni=32
> sysctl -w kern.sysv.shmseg=8
> sysctl -w kern.sysv.shmall=1024
>
>
> this is copied and pasted from my /etc/sysctl.conf:
> kern.sysv.shmmax=33554432
> kern.sysv.shmmin=1
> kern.sysv.shmmni=32
> kern.sysv.shmseg=8
> kern.sysv.shmall=65536
>
> here is my responce from the terminal
>
> postgres$ sysctl kern.sysv.shmmax
> kern.sysv.shmmax: 33554432
>
> postgres$ sysctl kern.sysv.shmall
> kern.sysv.shmall: 65536
>
>
> It looks like my settings in /etc/sysctl.conf are
> sticking just fine
>
>
> Ted
>
> --- "Jim C. Nasby" <decibel(at)decibel(dot)org> wrote:
>
> > decibel(at)phonebook(dot)1[12:31]~:1%sysctl
> > kern.sysv.shmmax
> > kern.sysv.shmmax: 1024000000
> >
> > It wouldn't surprise me at all if there was some
> > other black magic at
> > work here. What I do know is that I had to comment
> > out the sysctl line
> > in my /etc/rc to get that value to stick. I didn't
> > make notes during my
> > testing (booting to single user), but if memory
> > serves I was able to do
> > this:
> >
> > sysctl -w kern.sysv.shmmax=1024000000 #works
> > sysctl -w kern.sysv.shmmax=24000000 #also works
> > sysctl -w kern.sysv.shmmax=1024000000 #doesn't work
> >
> > What I do know for a fact is that after putting a
> > sleep in /etc/rc after
> > the sysctl's I was able to verify that my setting
> > from /etc/sysctl.conf
> > was being applied, but that it was then being
> > over-ridden by the setting
> > in /etc/rc. Unfortunately, since I only have one mac
> > and it's my primary
> > computer and testing this requires a number of
> > reboots I'm not keen on
> > spending more time experimenting with it, but if
> > someone has ideas on a
> > more elegant fix I'm all ears.
> >
> > I provided apple feedback about this, btw. Hopefully
> > they'll fix it at
> > some point.
> >
> > On Sat, Apr 30, 2005 at 07:00:57AM -0700, Theodore
> > Petrosky wrote:
> > > Jim,
> > >
> > > I didn't understand your comment
> > >
> > > "It appears that you can shrink shmmax but not
> > expand
> > > it."
> > >
> > > I did not comment out the kern.sysv.shmmax line
> > and
> > > it appears that my larger setting is sticking. Or
> > is
> > > it? What is that command to return the currrnt
> > values
> > > from the terminal?
> > >
> > > Ted
> > >
> > > --- "Jim C. Nasby" <decibel(at)decibel(dot)org> wrote:
> > > > 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
Give your computer some brain candy! www.distributed.net Team #1828

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