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Date:      Wed, 20 Feb 2013 12:58:49 +0200
From:      Andriy Gapon <avg@FreeBSD.org>
To:        Kevin Day <toasty@dragondata.com>
Cc:        FreeBSD Filesystems <freebsd-fs@FreeBSD.org>
Subject:   Re: Improving ZFS performance for large directories
Message-ID:  <5124AC69.6010709@FreeBSD.org>
In-Reply-To: <19E0C908-79F1-43F8-899C-6B60F998D4A5@dragondata.com>
References:  <19DB8F4A-6788-44F6-9A2C-E01DEA01BED9@dragondata.com> <CAJjvXiE%2B8OMu_yvdRAsWugH7W=fhFW7bicOLLyjEn8YrgvCwiw@mail.gmail.com> <F4420A8C-FB92-4771-B261-6C47A736CF7F@dragondata.com> <20130201192416.GA76461@server.rulingia.com> <19E0C908-79F1-43F8-899C-6B60F998D4A5@dragondata.com>

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on 19/02/2013 22:10 Kevin Day said the following:
> Timing doing an "ls" in large directories 20 times, the first is the slowest,
then all subsequent listings are roughly the same. There doesn't appear to be any
gain after 20 repetitions

I think that the above could be related to the below

> 	vfs.zfs.arc_meta_limit                  16398159872
> 	vfs.zfs.arc_meta_used                   16398120264



-- 
Andriy Gapon



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