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Date:      Wed, 30 Jan 2013 18:34:41 +0200
From:      Nikolay Denev <ndenev@gmail.com>
To:        Kevin Day <toasty@dragondata.com>
Cc:        FreeBSD Filesystems <freebsd-fs@freebsd.org>
Subject:   Re: Improving ZFS performance for large directories
Message-ID:  <23E6691A-F30C-4731-9F78-FD8ADDDA09AE@gmail.com>
In-Reply-To: <47975CEB-EA50-4F6C-8C47-6F32312F34C4@dragondata.com>
References:  <19DB8F4A-6788-44F6-9A2C-E01DEA01BED9@dragondata.com> <5267B97C-ED47-4AAB-8415-12D6987E9371@gmail.com> <47975CEB-EA50-4F6C-8C47-6F32312F34C4@dragondata.com>

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On Jan 30, 2013, at 5:19 PM, Kevin Day <toasty@dragondata.com> wrote:
>=20
> On Jan 30, 2013, at 4:36 AM, Nikolay Denev <ndenev@gmail.com> wrote:
>>=20
>>=20
>> What are your : vfs.zfs.arc_meta_limit and vfs.zfs.arc_meta_used =
sysctls?
>> Maybe increasing the limit can help?
>=20
>=20
> vfs.zfs.arc_meta_limit: 8199079936
> vfs.zfs.arc_meta_used: 13965744408
>=20
> Full output of zfs-stats: [=85snipped=85]

Looks like you can try to increase arc_meta_limit to be let's say : half =
of arc_max. (16398159872 in your case).





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