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Date: Wed, 26 Dec 2007 08:11:00 -0500
From: Scott Long <scottl@samsco.org>
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To: Mike Tancsa <mike@sentex.net>
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Cc: stable@freebsd.org
Subject: Re: SMP on FreeBSD 6.x and 7.0: Worth doing?
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Mike Tancsa wrote:
> At 12:12 PM 12/24/2007, Scott Long wrote:
>> For others who might want help with this, tweaking
>> vfs.ufs.dirhash_maxmem is what is needed.  A bit of a balancing act is
>> needed if you're on i386 since you'll risk exhausting KVA unless you
>> also tweak KVA_PAGES.
> 
> 
> Hi Scott,
>         How does one know if the vfs.ufs.dirhash_maxmem is set too high 
> and are exhausting KVA ?

Panics, freezes, failure to exec new programs, failure to create pipes, etc.

Scott