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Date:      Sun, 17 Jun 2018 12:08:21 +0930
From:      Shane Ambler <FreeBSD@ShaneWare.Biz>
To:        freebsd-fs@freebsd.org
Subject:   Re: What append when arc full
Message-ID:  <fe8fcb72-4ccb-d249-d533-ab7125e0f821@ShaneWare.Biz>
In-Reply-To: <8311a9a9-1a14-3520-aea3-8078e99713b9@ShaneWare.Biz>
References:  <20180613200700.GA3156@io.chezmoi.fr> <248ad0be-2002-89b5-0c1a-3ac73d493149@ShaneWare.Biz> <20180614054333.GA7053@io.chezmoi.fr> <8311a9a9-1a14-3520-aea3-8078e99713b9@ShaneWare.Biz>

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On 15/06/2018 13:43, Shane Ambler wrote:
> On 14/06/2018 15:13, Albert Shih wrote:
>> Le 14/06/2018 à 13:06:07+0930, Shane Ambler a écrit
> 
>>> If you want to keep some ram free for your processes, then you can set
>>> vfs.zfs.arc_max to limit the ram used by ARC. On recent system versions
>>> you can change it dynamically using sysctl or you can set it in
>>
>> "dynamically" .... I though it's only can set at boot time, at least it's
>> what
>>
>>     https://www.freebsd.org/doc/handbook/zfs-advanced.html
> 
> It seems the handbook has dropped behind. The ability to change arc_max
> and arc_min at runtime was merged into stable/10 and stable/11 almost
> two years ago, that means 10.4 and 11.x can do it but 10.3 or older will
> have to be set in /boot/loader.conf

For reference the handbook has now been updated, this had been done some
time ago but doing the commit was overlooked.

https://svnweb.freebsd.org/doc?view=revision&revision=51852

-- 
FreeBSD - the place to B...Software Developing

Shane Ambler




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