Date: Wed, 28 Mar 2007 16:37:15 +0200 From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=) To: =?iso-8859-1?Q?Szab=F3_P=E9ter?= <matyee@mail.alba.hu> Cc: freebsd-geom@freebsd.org Subject: Re: raid3 is slow Message-ID: <86zm5xph7o.fsf@dwp.des.no> In-Reply-To: <005c01c77134$28e0fce0$6502a8c0@peteruj> (=?iso-8859-1?Q?Szab?= =?iso-8859-1?Q?=F3_P=E9ter's?= message of "Wed, 28 Mar 2007 14:25:23 %2B0200") References: <003401c7712a$f71ebb60$6502a8c0@peteruj> <eudlg8$pm4$1@sea.gmane.org> <005c01c77134$28e0fce0$6502a8c0@peteruj>
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Szab=F3 P=E9ter <matyee@mail.alba.hu> writes: > # graid3 list > > Geom name: nmivol > State: DEGRADED First of all, your array is degraded. The graid3 output shows only four components. Unless the missing fifth component happens to be the parity disk, geom_raid3 will have to reconstruct your data on the fly. Second, you say nothing about which spindles the components are on and how those spindles are attached to the system. If some of those components are on the same spindle, or if some of those spindles are on the same ATA channel, performance will suffer considerably. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no
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