[daip] AIPS - Shared memory ID failure: Lion equivalent of sysctl.conf

[Brendan Reardon]

Wes -

Ooh interesting. As before, after we manually edit and run sysctl
kern.sysv, the values are changed. They only reset upon rebooting.
Interestingly enough though, if we do not reboot the tv does work (because
the values are our desired values).

So clearly, the issue is that sysctl kern.sysv has a default setting that
it keeps resetting to upon reboot.
This source [
http://publib.boulder.ibm.com/infocenter/idshelp/v117/index.jsp?topic=%2Fcom.ibm.relnotes.doc%2Fnotes%2Fifx_1170xc4%2Fmach%2Fids_machine_notes_11.70.macosx64.html
] writes,

> The kernel parameters also can be set by running the "sysctl" command.
> Any user can check the value of a parameter, but you must be user root
> (or sudo) to set parameter values. The "sysctl" command takes effect
> immediately, but parameters are reset to their original values during
> a system reboot.


So the question is how to change those original values.

As for someone managing the system for us, we do not.

On Wed, May 23, 2012 at 2:06 PM, Wes Young <wyoung at aoc.nrao.edu> wrote:

> Try resetting the values and not rebooting and see if they change. If not
> in /etc, do "sudo grep sysctl *" and see what you get. It's possible they
> are being set somewhere else. Does someone manage the system for you?
>
> wes
> wyoung at aoc.nrao.edu
>
>
> On May 23, 2012, at 12:01 PM, Brendan Reardon wrote:
>
> > Eric and Wes -
> >
> > I edited the permissions on sysctl.conf as you instructed to be,
> > -rw-r--r--@ 1 root wheel 111 May 23 13:09 sysctl.conf
> > After these permission changes, I manually edited kern.sysv as Wes
> instructed me to do with sudo with no avail - the values reset once again
> after reboot.
> >
> > As for potentially moving off of shared memory, I am currently reading
> this webpage: http://www.aips.nrao.edu/cgi-bin/ZXHLP2.PL?XAS but when I
> go to access this "~/.Xdefaults" file that you speak of I am having
> difficulty. "more ~/.Xdefaults" yields no results.
> >
> > Brendan
> > On Wed, May 23, 2012 at 1:34 PM, Wes Young <wyoung at aoc.nrao.edu> wrote:
> > Try
> >
> > sudo sysctl -w kern.sysv.shmmax=10485760
> > sudo sysctl -w kern.sysv.shmmin=1
> > sudo sysctl -w kern.sysv.shmmni=32
> > sudo sysctl -w kern.sysv.shmseg=8
> > sudo sysctl -w kern.sysv.shmall=4096
> >
> > then reboot.
> >
> > wes
> > wyoung at aoc.nrao.edu
> >
> >
> > On May 23, 2012, at 11:28 AM, Eric Greisen wrote:
> >
> > > Brendan Reardon wrote:
> > >> Yes
> > >
> > >>
> > >>    You did re-boot the computer this time?
> > >
> > > Now this is a mystery - for some reason your machine is not reading or
> > > accepting the file.  I had a spelling problem in mine on lion and it
> > > rejected the file (quietly) during the boot - but I do not see a
> > > spelling problem in yours.  What are the file owner, group, and
> > > permissions?  It may require   root, wheel, rw-r--r-- on the file.
> > >
> > > If all else fails you can instruct aips not to use shared memory but I
> > > have our Mac expert (and the one with the big screen lion system)
> > > looking at this.  HELP XAS will tell you about the ~/.Xdefaults file
> > > that allows you to say do not use shared memory (among a lot of other
> > > things).
> > >
> > > Eric Greisen
> > >
> > > _______________________________________________
> > > Daip mailing list
> > > Daip at listmgr.cv.nrao.edu
> > > http://listmgr.cv.nrao.edu/mailman/listinfo/daip
> >
> >
>
>
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