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Date:      Tue, 18 Jul 2000 00:48:09 -0700 (PDT)
From:      Kelly Yancey <kbyanc@posi.net>
To:        Jaye Mathisen <mrcpu@internetcds.com>
Cc:        hackers@FreeBSD.ORG
Subject:   Re: -stable message... Which param
Message-ID:  <Pine.BSF.4.21.0007180035520.16861-100000@gateway.posi.net>
In-Reply-To: <Pine.BSF.4.21.0007171016270.18895-100000@schizo.cdsnet.net>

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On Mon, 17 Jul 2000, Jaye Mathisen wrote:

> newsfeed-inn2# Jul 17 10:14:07 newsfeed-inn2
> /kernel: pmap_collect: collecting pv entries -- suggest increasing
> PMAP_SHPGPERPROC
> 
> Don't see this one in LINT.
> 
> Anybody have any wild guesses as to good values?
> 
> newsfeed-inn2# sysctl -a | grep shm
> kern.ipc.shmmax: 4194304
> kern.ipc.shmmin: 1
> kern.ipc.shmmni: 96
> kern.ipc.shmseg: 64
> kern.ipc.shmall: 1024
> 

  There was quite some discussion about this about a month ago, you should be
able to find in the archives by searching for SHMMAXPGS. The relavent LINT
values are:
options         SHMALL=1025
options         SHMMAX="(SHMMAXPGS*PAGE_SIZE+1)"
options         SHMMAXPGS=1025
options         SHMMIN=2
options         SHMMNI=33
options         SHMSEG=9

Generally, it is safe to increase SHMMAXPGS. Without knowing the specifics of
your application, I would suggest increasing it to 2048 (i.e. double the
default) and see if that does the trick. If not, keep increasing it by 1024
until it does.

  Kelly

--
Kelly Yancey  -  kbyanc@posi.net  -  Belmont, CA
System Administrator, eGroups.com                  http://www.egroups.com/
Maintainer, BSD Driver Database       http://www.posi.net/freebsd/drivers/
Coordinator, Team FreeBSD        http://www.posi.net/freebsd/Team-FreeBSD/



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