Date: Fri, 28 Oct 2005 23:35:02 +0200 From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@FreeBSD.ORG> To: Peter Jeremy <PeterJeremy@optushome.com.au> Cc: Mikhail Teterin <mi+mx@aldan.algebra.com>, hackers@FreeBSD.ORG, hardware@FreeBSD.ORG Subject: Re: Very slow writing to SATA disk Message-ID: <BC9D6C18-A7EC-4193-9021-7236CE12501F@FreeBSD.ORG> In-Reply-To: <20051028204803.GW39882@cirb503493.alcatel.com.au> References: <200510280518.j9S5I3oQ025430@blue.virtual-estates.net> <20051028094844.GU39882@cirb503493.alcatel.com.au> <200510281245.28314.mi%2Bmx@aldan.algebra.com> <20051028204803.GW39882@cirb503493.alcatel.com.au>
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On 28/10/2005, at 22:48, Peter Jeremy wrote: > On Fri, 2005-Oct-28 12:45:27 -0400, Mikhail Teterin wrote: > >> No, just checked -- the hw.ata.wc is set to 1. Is there anything =20 >> else to look >> at? > That exhausts my ideas, sorry. S=F6ren might be able to suggest =20 > something. Not really, however I have no experience with Hitachi drives, I =20 havn't trusted that line of drives since their name was IBM Deathstar =20= DTLA series :/ >>>> According to smartctl, the drive runs at 56C during the copying. =20= >>>> Its >>>> idle temperature seems to be 54C. >>>> >> It sure feels hot to the touch, but nothing is burning, > > A rule-of-thumb is that you can hold your finger on something for 4 > seconds then it is 45=B0C (or less). > >> this model's 'Ambient Temperature' spec is 5 to 55C... > > It's unlikely to affect I/O performance (though it may increase the > number of thermal re-calibrations) but it will definitely shorten the > drive life. Indeed, 55C is way to high for 24/7 usage, and it might be that the =20 drive is choking on it and barely is able to compensate.. What does SMART say ? any unusual like high correction rates or =20 anything ? S=F8ren Schmidt sos@FreeBSD.org
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