From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Stanislaw Gruszka <stf_xl@wp.pl>,
Andrew Victor <linux@maxim.org.za>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Haavard Skinnemoen <haavard.skinnemoen@atmel.com>,
linux-ide@vger.kernel.org,
Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
ddaney@caviumnetworks.com
Subject: Re: [RFC][PATCH] at91_ide driver
Date: Sat, 17 Jan 2009 23:08:21 +0300 [thread overview]
Message-ID: <49723AB5.7000809@ru.mvista.com> (raw)
In-Reply-To: <20090116161342.4229667f@lxorguk.ukuu.org.uk>
Hello.
Alan Cox wrote:
>> the PIO transfer speeds (very significantly) though I'm not sure of the
>> current state of affairs...
>>
>
> 16bit only performance is identical (as you'd expect)
Well, I don't know what to expect, having seen figures like 0.5 (or
1.5) MB/s cited on this list...
> 32bit is now
> identical with the 32bit pio patches applied
>
Hm, I didn't realize 32-bit I/O really can really boost the IDE
speed. I vaguely remember (or misremember) benchmarking drives under DOS
(many years ago) with and without 32-bit access enabled in the BIOS
Setup and not seeing any significant differences. Perhpas it's worth to
re-benchmark this in Linux if I find the time...
MBR, Sergei
next prev parent reply other threads:[~2009-01-17 20:08 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-14 12:45 [RFC][PATCH] at91_ide driver Stanislaw Gruszka
2009-01-14 12:58 ` Haavard Skinnemoen
2009-01-14 13:21 ` Stanislaw Gruszka
2009-01-14 17:05 ` Sergei Shtylyov
2009-01-22 11:19 ` Stanislaw Gruszka
2009-01-14 13:17 ` Alan Cox
2009-01-14 14:35 ` Stanislaw Gruszka
2009-01-14 15:14 ` Alan Cox
2009-01-16 13:32 ` Sergei Shtylyov
2009-01-16 15:03 ` Stanislaw Gruszka
2009-01-16 15:34 ` Sergei Shtylyov
2009-01-16 16:13 ` Alan Cox
2009-01-17 20:08 ` Sergei Shtylyov [this message]
2009-01-17 20:20 ` Alan Cox
2009-01-18 10:58 ` Sergei Shtylyov
2009-01-18 15:29 ` Sergei Shtylyov
2009-01-19 11:51 ` Stanislaw Gruszka
2009-01-19 15:20 ` Sergei Shtylyov
2009-01-16 16:58 ` Bartlomiej Zolnierkiewicz
2009-01-17 16:45 ` Sergei Shtylyov
2009-01-19 22:50 ` Sergei Shtylyov
2009-01-27 15:31 ` Bartlomiej Zolnierkiewicz
2009-01-19 11:14 ` Stanislaw Gruszka
2009-01-19 12:52 ` Bartlomiej Zolnierkiewicz
2009-01-16 17:43 ` Bartlomiej Zolnierkiewicz
2009-01-19 11:20 ` Stanislaw Gruszka
2009-01-30 9:05 ` Stanislaw Gruszka
2009-02-01 17:13 ` Bartlomiej Zolnierkiewicz
2009-02-02 12:35 ` Stanislaw Gruszka
2009-01-20 11:07 ` Sergei Shtylyov
2009-01-20 14:49 ` Stanislaw Gruszka
2009-01-20 15:33 ` Sergei Shtylyov
2009-01-21 10:33 ` Stanislaw Gruszka
2009-01-22 9:44 ` Sergei Shtylyov
2009-01-22 10:15 ` Stanislaw Gruszka
2009-01-22 11:12 ` Stanislaw Gruszka
2009-01-22 12:06 ` Sergei Shtylyov
2009-01-22 12:16 ` Sergei Shtylyov
2009-01-22 12:24 ` Sergei Shtylyov
2009-01-22 12:57 ` Stanislaw Gruszka
2009-01-22 13:38 ` Sergei Shtylyov
2009-01-22 13:14 ` Stanislaw Gruszka
2009-01-22 13:48 ` Sergei Shtylyov
2009-01-22 14:13 ` Stanislaw Gruszka
2009-01-27 15:46 ` Sergei Shtylyov
2009-01-29 14:48 ` Stanislaw Gruszka
2009-01-29 15:22 ` Sergei Shtylyov
2009-01-22 14:39 ` Stanislaw Gruszka
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