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Date:      Thu, 7 Feb 2002 12:41:57 -0800
From:      Alfred Perlstein <bright@mu.org>
To:        Henk Wevers <henk@wevers.org>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: vfs.ufs.dirhash_docheck?
Message-ID:  <20020207124157.K3623@elvis.mu.org>
In-Reply-To: <3C62DC57.5050703@wevers.org>; from henk@wevers.org on Thu, Feb 07, 2002 at 08:58:15PM %2B0100
References:  <3C62DC57.5050703@wevers.org>

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* Henk Wevers <henk@wevers.org> [020207 11:58] wrote:
> Hi,
> 
> Just to try the "thing" out i did put vfs.ufs.dirhash_docheck to 1.
> My active memory use was in 30 minutes 75 MB lower, and the io is 
> faster, the load is lower.
> The OS is FreeBSD 4.5-REL with 1250MB ram on a PIII 733, it runs 30+ 
> active jail() enviorements.
> 
> What does it exactly, this hidden sysctl value?

It's a debugging sysctl that is wasting cpu cycles.  Turn it off,
don't touch the flashing lights and keep your dirty mitts away
from the big red button.

-Alfred

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