Messages in this thread | | | Subject | Re: Software RAID5 with 2.6.0-test | From | (Måns Rullgård) | Date | Thu, 09 Oct 2003 10:55:45 +0200 |
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Andre Tomt <andre@tomt.net> writes:
>> When I tried it, I was running 2.6.0-test4. The RAID5 was 4 120 GB >> Seagate disks on a Highpoint controller. > > <snip> > >> The other thing that I don't like, is the performance of the RAID >> array. The disks individually give ~40 MB/s read speed, but the array >> only measures 25 MB/s. I was of the impression, that RAID5 would give >> read speeds at least equal to the underlying disks. Is this >> incorrect? > > Was this a 4 port or 2 port HPT controller? Keep in mind, two disks on > the same IDE channel severely degrades performance, *especially* with > RAID.
It's a four port SATA controller. I'd never even think about placing two disks on the same cable.
-- Måns Rullgård mru@users.sf.net - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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