Date: Wed, 12 Dec 2012 13:16:53 +0100 (CET) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: Adrian Chadd <adrian@freebsd.org> Cc: Eitan Adler <lists@eitanadler.com>, "Ronald F. Guilmette" <rfg@tristatelogic.com>, freebsd-hackers@freebsd.org Subject: Re: FreeBSD for serious performance? (was: Re: 9.x -- New Install -- serious partition misalignment) Message-ID: <alpine.BSF.2.00.1212121316380.1751@wojtek.tensor.gdynia.pl> In-Reply-To: <CAJ-VmoktZGn_LGtnb4aJD2sYOKpWLiJaqq_vW97-PFxagYRq%2BA@mail.gmail.com> References: <20121209014547.238070@gmx.com> <1830.1355025154@tristatelogic.com> <20121208230433.2c54f44a@kan.dyndns.org> <CAF6rxgnL-QX2R_QzMuhhTuqBywmURGnivu0uL5dhMw1ds_xUzg@mail.gmail.com> <CAJ-VmoktZGn_LGtnb4aJD2sYOKpWLiJaqq_vW97-PFxagYRq%2BA@mail.gmail.com>
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what's a point of not using ahci(4)? On Sat, 8 Dec 2012, Adrian Chadd wrote: > Hi, > > Yes. atacam supports NCQ. > > The older IDE/ATA code doesn't support NCQ. The CAM ATA code (ie, > atacam) supports it if the drive supports it. > > So, the "FreeBSD doesn't do NCQ" point is incorrect. > > If you don't believe me - look in sys/cam/ata/ata_da.c, look for ata_ncq_cmd(). > > > Adrian > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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