Re: Increasing Shared Memory - on MacOS X

Chris-

This thread from Darwin might help you identify someone who is in the know
about shared memory:

http://www.darwinfo.org/devlist.php3?number=1385

-Nick

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Nick Fankhauser nickf(at)ontko(dot)com Phone 1.765.935.4283 Fax 1.765.962.9788
Ray Ontko & Co. Software Consulting Services http://www.ontko.com/

> -----Original Message-----
> From: pgsql-admin-owner(at)postgresql(dot)org
> [mailto:pgsql-admin-owner(at)postgresql(dot)org]On Behalf Of Chris Ruprecht
> Sent: Saturday, January 26, 2002 11:12 AM
> To: Chad R. Larson
> Cc: PostGreSQL Admin Group
> Subject: Re: [ADMIN] Increasing Shared Memory - on MacOS X
>
>
> Hi Chad,
>
> good try, but there is unfortunately no parameter related to memory.
> sysctl -a displays all of the parameters and their current settings,
> nothing amongst them which looks like it's of help here.
>
> Thanks for the help, I guess, I have to see if I can talk to somebody
> @ Apple or one of the darwin developer's groups.
>
> Best regards,
> Chris
>
> At 21:19 -0700 01/25/2002, Chad R. Larson wrote:
> >At 09:06 PM 1/24/02 -0500, Tom Lane wrote:
> >>Since OSX is basically BSD under the hood, I'd expect BSD-ish
> >>solutions to be the place to look. Our notes about BSD systems say
> >>that a kernel rebuild is the only way to alter SHMMAX on those
> >>kernels :-(
> >
> >
> >OS/X is FreeBSD, with a MACH kernel and Aqua as a window manager
> >(pretty much).
> >
> >I don't know enough about tuning the MACH kernel, but on a pure
> >FreeBSD system you can use "sysctl" to change the variable
> >"kernel.ipc.shmmax" on the fly to whatever you think makes sense.
> >
> >
> > -crl
> >--
> >Chad R. Larson (CRL22) chad(at)eldocomp(dot)com
> > Eldorado Computing, Inc. 602-604-3100
> > 5353 North 16th Street, Suite 400
> > Phoenix, Arizona 85016-3228
>
>
> --
> Chris Ruprecht
> Network grunt and bit pusher extraordinaíre
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