Date: Fri, 10 Aug 2001 06:54:04 +0200 From: Thierry Herbelot <thierry@herbelot.com> To: Kevin Hui <khui@cs.toronto.edu> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Experiencing very slow raw write speeds on /dev/ad1 Message-ID: <3B7368EC.F27F046D@herbelot.com> References: <Pine.GSO.4.21.0108091853190.5157-100000@gardiner.cs>
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Kevin Hui wrote: > > Hi all, > > I have installed 2 Maxtor UDMA100 drives in my system, sharing the channel > ide0. /dev/ad0 contains all the FreeBSD partitions and ad1 is used as a > scratch drive (there's nothing on it). Ide1 channel is used for the DVD > drive (which doesn't support UDMA): > [SNIP] this is "normal" : 4.3-Release shipped with IDE write-caching disable (for security reasons) you can get back write caching with the following command : sysctl hw.ata.wc=1 TfH > > ----------------------- > FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001 > jkh@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC > Timecounter "i8254" frequency 1193182 Hz > CPU: Pentium III/Pentium III Xeon/Celeron (1004.52-MHz 686-class CPU) > Origin = "GenuineIntel" Id = 0x686 Stepping = 6 [SNIP] -- Thierry Herbelot To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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