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Date: Wed, 14 May 2008 18:03:47 -0700
From: Jeremy Chadwick <koitsu@FreeBSD.org>
To: Evren Yurtesen <yurtesen@ispro.net>
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User-Agent: Mutt/1.5.17 (2007-11-01)
Cc: freebsd-stable@freebsd.org
Subject: Re: Approaching the limit on PV entries, consider increasing
	either the vm.pmap.shpgperproc or the vm.pmap.pv_entry_max sysctl.
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On Wed, May 14, 2008 at 11:39:10PM +0300, Evren Yurtesen wrote:
> Approaching the limit on PV entries, consider increasing either the 
> vm.pmap.shpgperproc or the vm.pmap.pv_entry_max sysctl.
> Approaching the limit on PV entries, consider increasing either the 
> vm.pmap.shpgperproc or the vm.pmap.pv_entry_max sysctl.

I've seen this message on one of our i386 RELENG_7 boxes, which has a
medium load (webserver with PHP) and 2GB RAM.  Our counters, for
comparison:

vm.pmap.pmap_collect_active: 0
vm.pmap.pmap_collect_inactive: 0
vm.pmap.pv_entry_spare: 7991
vm.pmap.pv_entry_allocs: 807863761
vm.pmap.pv_entry_frees: 807708792
vm.pmap.pc_chunk_tryfail: 0
vm.pmap.pc_chunk_frees: 2580082
vm.pmap.pc_chunk_allocs: 2580567
vm.pmap.pc_chunk_count: 485
vm.pmap.pv_entry_count: 154969
vm.pmap.shpgperproc: 200
vm.pmap.pv_entry_max: 1745520

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |