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Date:      Mon, 26 Jul 2010 10:10:17 +0200
From:      Julien Cigar <jcigar@ulb.ac.be>
To:        freebsd-questions@freebsd.org
Subject:   Re: What is the meaning of this warn?
Message-ID:  <4C4D42E9.7000400@ulb.ac.be>
In-Reply-To: <4C4D21B8.3010608@gmail.com>
References:  <4C4D21B8.3010608@gmail.com>

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On 07/26/2010 07:48, Jason wrote:
> HI,ALL:

Hello,

>
> My freebsd server offer service to thousands of clients.
> I found lots of warning in the /var/log/message like this :"Approaching
> the limit on PV entries, consider increasing either the
> vm.pmap.shpgperproc or the vm.pmap.pv_entry_max tunable"
>

You probably have a lot of processes which use shared memory ..?
Enabling superpages (vm.pmap.pg_ps_enabled=1 in loader.conf) should 
resolve the problem (superpages have been added in 7.2)

> My question is :
> 1.what is the meaning of PV?
> 2.Although there are lots of this warning,my server works still well.
> Could someone explain the meaning of this warning ?
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