Date: Mon, 16 Jan 2012 12:05:53 +0000 From: Tom Evans <tevans.uk@googlemail.com> To: Dieter BSD <dieterbsd@engineer.com> Cc: freebsd-performance@freebsd.org Subject: Re: cmp(1) has a bottleneck, but where? Message-ID: <CAFHbX1LH1CW4a1XMkMpdDttbTSTnhDL65VW=UzyC6qFjKGnS2Q@mail.gmail.com> In-Reply-To: <20120115233255.218250@gmx.com> References: <20120115233255.218250@gmx.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Jan 15, 2012 at 11:32 PM, Dieter BSD <dieterbsd@engineer.com> wrote: > I recently read somewhere that zfs needs 5 GB memory for each 1 TB of disk. > People that run zfs obviously don't care about using lots of memory. You read incorrectly. To run zfs with dedup needs ~ 5GB of RAM per TB, but this depends upon file size. However, the majority of ZFS users do not use dedup. My pool is 18 TB with 8 GB of RAM, of which ZFS can only access 4 GB. Cheers Tom
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAFHbX1LH1CW4a1XMkMpdDttbTSTnhDL65VW=UzyC6qFjKGnS2Q>