Date: Tue, 14 Feb 2012 20:24:32 +0100 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: Martin Sugioarto <martin@sugioarto.com> Cc: freebsd-stable@freebsd.org, Jeremy Chadwick <freebsd@jdc.parodius.com>, Claudius Herder <claudius@ambtec.de> Subject: Re: problems with AHCI on FreeBSD 8.2 Message-ID: <4F3AB4F0.9010002@omnilan.de> In-Reply-To: <20120214192319.44ff7aff@zelda.sugioarto.com> References: <20120214091909.GP2010@equilibrium.bsdes.net> <20120214100513.GA94501@icarus.home.lan> <20120214135435.GQ2010@equilibrium.bsdes.net> <20120214141601.GA98986@icarus.home.lan> <4F3A83DE.3000200@ambtec.de> <20120214165029.GA1852@icarus.home.lan> <4F3A971F.9040407@omnilan.de> <20120214192319.44ff7aff@zelda.sugioarto.com>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigFB6FD41B87E3F0B2C422F57D Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable schrieb Martin Sugioarto am 14.02.2012 19:23 (localtime): > Am Tue, 14 Feb 2012 18:17:19 +0100 > schrieb Harald Schmalzbauer <h.schmalzbauer@omnilan.de>: > >>> I find it interesting that, at least so far, the only people >>> reporting problems of this type with the ahci.ko driver are people >>> using Samsung disks. The only difference is that your models are >>> F1s while the OPs are F2s. >> I saw such timeouts long ago and mav@ had a look at my postings and he= >> mentioned it could be a NCQ problem. >> I suspected the disks firmware. >> I never tracked it down further, because after replacing the Samsung >> (F3 in that case) disks with hitachi ones solved all my problems and >> gave a big performance kick as well (with zfs). >> You can find the discussion here: >> http://lists.freebsd.org/pipermail/freebsd-stable/2010-February/055374= =2Ehtml > Hi, > > I just want to add here that I am using 2 drives of type "Samsung > HD103SJ" (SpinPoint F3). And I did not have problems with ZFS and with > UFS either (for several years now). Everything has been deployed ontop > ada(4) since FreeBSD-8. > > Actually the speed is very good (sequential read at 140 MB/s and more).= I guess it's always the firmware of the EcoGreen models which cause these problems. Your drive isn't EG... I don't remember exactly the different model numbers, but I'm sure they were all EcoGreen. The lower power consumption was the reason to choose these specific drives (different capacities and F2/F3 series tried), with acceptable performance loss - I thought. But it turned out that EcoGreen and NCQ as well as RAIDZ demands dont' fit together... -Harry --------------enigFB6FD41B87E3F0B2C422F57D Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (FreeBSD) iEYEARECAAYFAk86tPAACgkQLDqVQ9VXb8iYGwCcCTDHkqyjWW4g8/U0H9xFHFfY Mi8AnibROD/RwWoJWEiWaXBPcJpFCZxF =Ahf8 -----END PGP SIGNATURE----- --------------enigFB6FD41B87E3F0B2C422F57D--
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