Date: Wed, 31 Jan 2007 07:54:24 +0200 From: Ian FREISLICH <if@hetzner.co.za> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: Robert Huff <roberthuff@rcn.com>, freebsd-current@freebsd.org Subject: Re: Interesting speed benchmarks Message-ID: <E1HC8QK-0000Px-P5@hetzner.co.za> In-Reply-To: Message from Peter Jeremy <peterjeremy@optushome.com.au> of "Wed, 31 Jan 2007 10:12:10 %2B1100." <20070130231210.GR892@turion.vk2pj.dyndns.org>
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Peter Jeremy wrote: > On Tue, 2007-Jan-30 15:00:47 -0500, Robert Huff wrote: > >huff@>>dump 0 -La -C 32 -f /dev/null /usr >& /tmp/null_dump > > DUMP: DUMP: 27162681 tape blocks on 1 volume > > DUMP: finished in 12961 seconds, throughput 2095 KBytes/sec > > Still fairly atrocious. What about: As a random datapoint that might or might not be related. In the last year or so I was pontificating about how much better SCSI was that IDE/ATA to my boss. I then did some benchmarks on my (CURRENT) system and discovered that an old 10Gig 7.5krpm UDMA33 disk significantly out perform some Seagate Cheatah LVD 10krpm disks. If you're interested, I'll see if I still have a copy of the benchmarks. Last time I looked, ahc(4) was still under GIANT. The ATA system has had a significant overhaul. Ian -- Ian Freislich
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