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Date:      Fri, 30 Aug 2013 02:49:24 -0700 (PDT)
From:      Robert_Burmeister <robert.burmeister@utoledo.edu>
To:        freebsd-stable@freebsd.org
Subject:   Re: Suggest changing dirhash defaults for FreeBSD 9.2.
Message-ID:  <1377856164912-5840292.post@n5.nabble.com>
In-Reply-To: <1377805359915-5840115.post@n5.nabble.com>
References:  <521C9E85.4060801@UToledo.edu> <1377805359915-5840115.post@n5.nabble.com>

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Observation relevant to tuning vfs.ufs.dirhash_maxmem:

When swap is in use
dirhash_mem hovers between 10% and 20% of dirhash_maxmem
due to frequent scavenging.

This indicates active dirhash_mem effectively behaves differently during low
memory,
and that the dirhash_reclaimage setting is effectively irrelevant during low
memory.




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