Date: Thu, 09 Feb 2012 14:39:52 +0100 From: Alexander Leidinger <Alexander@Leidinger.net> To: fjwcash@gmail.com, emz@norma.perm.ru Cc: freebsd-stable@freebsd.org Subject: Re: zfs arc and amount of wired memory Message-ID: <c1xm7xkdxj55m3rdsgfapl9c.1328794792912@email.android.com>
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Hi, if you are not using USB3 and a fast memory stick, it will be slower than swapping to disk. Bye, Alexander. -- Send via an Android device, please forgive brevity and typographic and spelling errors. Freddie Cash <fjwcash@gmail.com> hat geschrieben:On Wed, Feb 8, 2012 at 10:25 AM, Eugene M. Zheganin <emz@norma.perm.ru> wrote: > On 08.02.2012 18:15, Alexander Leidinger wrote: >> I can't remember to have seen any mention of SWAP on ZFS being safe >> now. So if nobody can provide a reference to a place which tells that >> the problems with SWAP on ZFS are fixed: >> 1. do not use SWAP on ZFS >> 2. see 1. >> 3. check if you see the same problem without SWAP on ZFS (btw. see 1.) >> > So, if a swap have to be used, and, it has to be backed up with something > like gmirror so it won't come down with one of the disks, there's no need to > use zfs for system. > > This makes zfs only useful in cases where you need to store something on a > couple+ of terabytes, still having OS on ufs. Occam's razor and so on. Or, you plug a USB stick into the back (or even inside the case as a lot of mobos have internal USB connectors now) and use that for swap. -- Freddie Cash fjwcash@gmail.com _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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