Date: Mon, 11 Jan 2010 20:39:30 +0200 From: Dan Naumov <dan.naumov@gmail.com> To: Pete French <petefrench@ticketswitch.com> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ZFS on top of GELI Message-ID: <cf9b1ee01001111039g21a3c81bja87a8a2825157fae@mail.gmail.com> In-Reply-To: <E1NUO5m-0001aK-Uk@dilbert.ticketswitch.com> References: <cf9b1ee01001100708m7851418cmbb77cc3580d0fab3@mail.gmail.com> <E1NUO5m-0001aK-Uk@dilbert.ticketswitch.com>
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On Mon, Jan 11, 2010 at 7:30 PM, Pete French <petefrench@ticketswitch.com> wrote: >> GELI+ZFS and Debian Linux with MDRAID and cryptofs. Has anyone here >> made any benchmarks regarding how much of a performance hit is caused >> by using 2 geli devices as vdevs for a ZFS mirror pool in FreeBSD (a > > I havent done it directly on the same boxes, but I have two systems > with idenitical drives, each with a ZFS mirror pool, one wth GELI, and > one without. Simple read test shows no overhead in using GELI at all. > > I would recommend using the new AHCI driver though - greatly > improves throughput. How fast is the CPU in the system showing no overhead? Having no noticable overhead whatsoever sounds extremely unlikely unless you are actually using it on something like a very modern dualcore or better. - Sincerely, Dan Naumov
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