Re: [PERFORM] Issues with OSX and SHMMAX?

2013-04-22 Thread Josh Berkus
On 04/21/2013 02:33 PM, Evgeny Shishkin wrote:
 
 On Apr 22, 2013, at 1:29 AM, Josh Berkus j...@agliodbs.com wrote:
 
 Folks,

 I've heard a rumor that the most recent update of OSX mountain lion
 lowers the installed SHMMAX to 4MB, which prevents PostgreSQL from
 installing.  Can anyone verify this?

 
 kern.sysv.shmmax: 4194304

That would be 4MB.  Can anyone else verify this?

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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Re: [PERFORM] Issues with OSX and SHMMAX?

2013-04-22 Thread Steve Atkins

On Apr 22, 2013, at 11:19 AM, Josh Berkus j...@agliodbs.com wrote:

 On 04/21/2013 02:33 PM, Evgeny Shishkin wrote:
 
 On Apr 22, 2013, at 1:29 AM, Josh Berkus j...@agliodbs.com wrote:
 
 Folks,
 
 I've heard a rumor that the most recent update of OSX mountain lion
 lowers the installed SHMMAX to 4MB, which prevents PostgreSQL from
 installing.  Can anyone verify this?
 
 
 kern.sysv.shmmax: 4194304
 
 That would be 4MB.  Can anyone else verify this?

It's the default setting on my 10.8.3 box. (I'm setting it higher in 
/etc/sysctl.conf
and have no problems, but it stopped postgres.app starting when I removed
that).

Cheers,
  Steve



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Re: [PERFORM] Issues with OSX and SHMMAX?

2013-04-22 Thread Tom Lane
Steve Atkins st...@blighty.com writes:
 On Apr 22, 2013, at 11:19 AM, Josh Berkus j...@agliodbs.com wrote:
 On 04/21/2013 02:33 PM, Evgeny Shishkin wrote:
 On Apr 22, 2013, at 1:29 AM, Josh Berkus j...@agliodbs.com wrote:
 I've heard a rumor that the most recent update of OSX mountain lion
 lowers the installed SHMMAX to 4MB, which prevents PostgreSQL from
 installing.  Can anyone verify this?

 kern.sysv.shmmax: 4194304

 That would be 4MB.  Can anyone else verify this?

 It's the default setting on my 10.8.3 box. (I'm setting it higher in
 /etc/sysctl.conf and have no problems, but it stopped postgres.app
 starting when I removed that).

AFAIR, the default setting has been that or lower in every previous
version of OSX, so it seems unlikely that mountain lion per se broke
anything.  It might've appeared that way if you did a reinstall and
forgot to copy your old /etc/sysctl.conf.

A different theory, if things used to work and now don't, is that
somewhere recently we crossed a threshold in memory usage between
will start at 4MB and won't start at 4MB.  If so, 9.3 ought to
make things better (since we're mostly getting out from under SysV
shared memory limits), but in existing releases manually fixing
the limit will be the only recourse.

regards, tom lane


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[PERFORM] Issues with OSX and SHMMAX?

2013-04-21 Thread Josh Berkus
Folks,

I've heard a rumor that the most recent update of OSX mountain lion
lowers the installed SHMMAX to 4MB, which prevents PostgreSQL from
installing.  Can anyone verify this?

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com.


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Re: [PERFORM] Issues with OSX and SHMMAX?

2013-04-21 Thread Evgeny Shishkin

On Apr 22, 2013, at 1:29 AM, Josh Berkus j...@agliodbs.com wrote:

 Folks,
 
 I've heard a rumor that the most recent update of OSX mountain lion
 lowers the installed SHMMAX to 4MB, which prevents PostgreSQL from
 installing.  Can anyone verify this?
 

kern.sysv.shmmax: 4194304

mac os x 10.8.3
 -- 
 Josh Berkus
 PostgreSQL Experts Inc.
 http://pgexperts.com.
 
 
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 Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
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