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Date:      Mon, 1 Apr 2002 12:02:22 -0500
From:      George Georgalis <george@galis.org>
To:        Kenneth Culver <culverk@alpha.yumyumyum.org>
Cc:        George Georgalis <george@galis.org>, Kevin Stevens <Kevin_Stevens@pursued-with.net>, Nick Lozinsky <nl3481@wi.rr.com>, questions@FreeBSD.ORG
Subject:   Re: EIDE drive performance improvements
Message-ID:  <20020401120222.G23357@trot.haven.dom>
In-Reply-To: <20020331231809.Y34760-100000@alpha.yumyumyum.org>; from culverk@alpha.yumyumyum.org on Sun, Mar 31, 2002 at 11:18:41PM -0500
References:  <20020331142029.N8079@trot.haven.dom> <20020331231809.Y34760-100000@alpha.yumyumyum.org>

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re: using 80 wire cables, not sure. it's a sony laptop PCG505LS
>> ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master UDMA33

I did minimal experimentation under Linux but this line helped speed things up a lot
hdparm -c3 -m16 /dev/hda

I do a fair amount of disk thrashing stuff and don't recall any problems. Can I force faster settings under FreeBSD?

// George

On Sun, Mar 31, 2002 at 11:18:41PM -0500, Kenneth Culver wrote:
>Are you using 80 wire cables? FreeBSD won't set it up in anything higher
>than UDMA33 if you aren't.
>
>Ken
>
>On Sun, 31 Mar 2002, George Georgalis wrote:
>
>> On Thu, Mar 28, 2002 at 12:55:13PM -0500, Kenneth Culver wrote:
>> >yeah, or just type dmesg, drive configuration will be at the end of a
>> >dmesg command
>> >
>> >Ken
>> >
>> >On Thu, 28 Mar 2002, Kevin Stevens wrote:
>> >
>> >>
>> >>
>> >> On Thu, 28 Mar 2002, Kenneth Culver wrote:
>> >>
>> >> > No, the driver automatically enables the fastest modes and such.
>> >> >
>> >> > Ken
>> >>
>> >> And you can check in /var/run/dmesg.boot to see what mode got configured.
>> >>
>> >> KeS
>>
>> I've been wondering about this... and it doesn't look is if it was probed correctly...
>>
>> ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master UDMA33
>>
>> I set it faster under linux, what's up?
>>
>> // George
>>
>>
>> --
>> GEORGE GEORGALIS, System Admin/Architect    cell: 347-451-8229
>> Security Services, Web, Mail,            mailto:george@galis.org
>> File, Print, DB and DNS Servers.       http://www.galis.org/george
>>
>>
>

-- 
GEORGE GEORGALIS, System Admin/Architect    cell: 347-451-8229 
Security Services, Web, Mail,            mailto:george@galis.org 
File, Print, DB and DNS Servers.       http://www.galis.org/george 

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