Messages in this thread | | | Subject | Re: 2.1.111: IDE DMA disabled? | From | Peter Mutsaers <> | Date | 27 Jul 1998 17:39:12 +0200 |
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>> On Sun, 26 Jul 1998 20:32:19 +0100 (BST), alan@lxorguk.ukuu.org.uk >> (Alan Cox) said:
>> BUT THERE HAVE BEEN REPORTS OF CORRUPTION WITH IDE-DMA FOR TOO >> LONG, AND WE'RE READYING FOR A STABLE RELEASE!
>> And yes, Alan, it's trivial to get 10 times throughput >> improvement by being buggy.
AC> Or just run FreeBSD, which doesn't seem to be having any such AC> problems. The only known 'buggy' case we have is some WD AC> drives, which are noted so on their web site according to one AC> poster. But then our 2.0 IDE code destroyed older WD 1Gig AC> drives due to a firmware bug in the drives anyway.
Indeed. I use UDMA on FreeBSD -current with some weird chipset (Linux 2.0 nor 2.1 could recognize it and thus hdparm -d 1 refused to turn on UDMA) on a quite heavily loaded machine, without any corruption so far. Using softupdates I read 12MByte/s (much more than my twice as expensive fast-SCSI-2 disks).
I haven't heard of any FreeBSD user with such problems in UDMA. I'm very pleased with it, my system boots at least twice as fast as without DMA.
-- /\_/\ ( o.o ) Peter Mutsaers | Abcoude (Utrecht), | Trust me, I know ) ^ ( plm@xs4all.nl | the Netherlands | what I'm doing.
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