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Date: Thu, 10 May 2012 11:52:32 -0400
From: Charles Owens <cowens@greatbaysoftware.com>
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Cc: Adam Vande More <amvandemore@gmail.com>, Alan Cox <alan.l.cox@gmail.com>,
	freebsd-stable@freebsd.org
Subject: Re: superpages not solving "PV entries" limit warning
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That's very helpful!  I had read about that and wondered if it applied 
to i386.

Should I have expected "superpages" to completely cure the condition... 
or does it just help?  Should I now be looking at tuning the related 
pmap sysctls to give further relief?

Thanks!

Charles


On 5/10/12 11:24 AM, Alan Cox wrote:
> On Thu, May 10, 2012 at 2:32 AM, Adam Vande More 
> <amvandemore@gmail.com <mailto:amvandemore@gmail.com>> wrote:
>
>     On Wed, May 9, 2012 at 12:55 PM, Charles Owens
>     <cowens@greatbaysoftware.com
>     <mailto:cowens@greatbaysoftware.com>>wrote:
>
>     > Hi fellow BSD-types,
>     >
>     > I have a buy system that forks lots of processes and I see
>     repeatedly the
>     > message:  "Approaching the limit on PV entries, consider
>     increasing either
>     > the vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable".
>     >
>     > System details:
>     >
>     >  * 8.1-RELEASE-p2 i386 PAE kernel
>     >  * 6 GB RAM
>     >
>
>     The warning is not applicable any longer including your version as
>     well as
>     several previous ones.  The warning has been removed from current
>     releases.
>
>
> For amd64, yes, but not i386.  It can't be removed from i386.
>
> Alan
>
>
>