On Tue, Dec 18, 2007 at 04:54:19PM +0100, Esteban Ribičić wrote:
>is it mounted sync or async?
I can't imagine that would matter for a read test.
Mike Stone
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Stuart Henderson wrote:
> On 2007/12/18 00:33, Joel Jaeggli wrote:
>> sata ssds that are even faster are possible but command a substantial
>> price premium...
>
> In the 5501, it looks like the SATA connector is bridged to the same
> IDE interface as the CF card.
It is. Which is why you see sata
Hello,
There is a value for input voltage of the net4801
on the website of soekris of 6-20VDC but on the PDF manual
it says 6-28VDC. Which one is correct ?
is it 20VDC or 28VDC max input voltage ?
--
--
Christophe Prevotaux tel: +1 416
Bill Maas wrote:
> Hi Pontus,
>
> On Tue, 2007-12-18 at 10:07 +0100, Pontus Pihlgren wrote:
>>> sata ssds that are even faster are possible but command a substantial
>>> price premium...
>>>
>>>
>> This is what confuses me, the benchmarks and general experience of
>> posters in this thread say
Hi Pontus,
On Tue, 2007-12-18 at 10:07 +0100, Pontus Pihlgren wrote:
> > sata ssds that are even faster are possible but command a substantial
> > price premium...
> >
> >
> This is what confuses me, the benchmarks and general experience of
> posters in this thread says that I should not expec
On Tue, Dec 18, 2007 at 04:54:19PM +0100, Esteban Ribičić wrote:
> is it mounted sync or async?
The figures quoted were for reads, not writes, so I don't think it would
make any difference...
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h
On Tue, 18 Dec 2007 16:51:53 +0100, Pontus Pihlgren wrote:
>That is certainly encouraging. Anyone who has a card marked 20 MB/s that
>could do the same?
See http://www.lexar.com/digfilm/cf_udma.html
They state that the specified speed is "minimum sustained write speed
capability of a blazing 30
I find bonnie++ to be particularly useful; given the small test size,
the original bonnie may suffice as well.
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agree, dd is a true *nix tool. What does people use to measure seek
times on CF? I think considering the size of CF , most I/O will last a
few seconds so seek time would come more interesting than plain and
boring R/W...
On 12/18/07, Iustin Pop <[EMAIL PROTECTED]> wrote:
> On Tue, Dec 18, 2007 at
On Tue, Dec 18, 2007 at 04:31:48PM +0100, Bent wrote:
> For what it is worth, here is a measurement done on a 5501 running Gentoo
> Linux:
>
> leopold ~ # hdparm -tT /dev/hda
I would not trust hdparm for [any kind of] benchmarking. As I pointed
before, use dd with iflag=direct which skips the ca
Esteban Ribičić wrote:
> is it mounted sync or async?
>
Reading through the man page of hdparm, I gather that the benchmark
performed using the -t flag will flush the IO-buffers and then read from
the device. And since hdparm talks directly with the device, not via the
file system, I think the r
hi bent,
when mounting a dev u can pass a few parameters , one of them is -o
async or -o sync which tells whether the kernel will i/o to the device
straight ahead or buffer in memory first (speed varies dramatically).
not sure what's linux kernel default, i guess async? nor how the
hdparm test neit
Hi Esteban
2007/12/18, Esteban Ribičić <[EMAIL PROTECTED]>:
> is it mounted sync or async?
>
Sorry for my ignorance, but how do you tell sync or async?
Bent
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is it mounted sync or async?
On 12/18/07, Bent <[EMAIL PROTECTED]> wrote:
> For what it is worth, here is a measurement done on a 5501 running Gentoo
> Linux:
>
> leopold ~ # hdparm -tT /dev/hda
>
> /dev/hda:
> Timing cached reads: 390 MB in 2.01 seconds = 194.14 MB/sec
> Timing buffered dis
Bent skrev:
> For what it is worth, here is a measurement done on a 5501 running Gentoo
> Linux:
>
> leopold ~ # hdparm -tT /dev/hda
>
> /dev/hda:
> Timing cached reads: 390 MB in 2.01 seconds = 194.14 MB/sec
> Timing buffered disk reads: 34 MB in 3.14 seconds = 10.82 MB/sec
> leopold ~ #
For what it is worth, here is a measurement done on a 5501 running Gentoo Linux:
leopold ~ # hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 390 MB in 2.01 seconds = 194.14 MB/sec
Timing buffered disk reads: 34 MB in 3.14 seconds = 10.82 MB/sec
leopold ~ # hdparm -tT /dev/hdb
/dev/hd
Hi
We live in a strange world. If you want to go high speed with a memory
card, you pay money to get the "secret sauce" that allows you to do
it. The open standard for hitting all of them is a slow interface.
Most of the embedded community likes cheap better than fast.
Bob
On Dec 18, 2007
On 2007/12/18 00:33, Joel Jaeggli wrote:
> sata ssds that are even faster are possible but command a substantial
> price premium...
In the 5501, it looks like the SATA connector is bridged to the same
IDE interface as the CF card.
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On Tue, Dec 18, 2007 at 12:19:10AM -0700, Anthony Roberts wrote:
> > OpenBSD will just fit on 512 MB, including the compiler and docs.
> > But that is just a bit too small when you do a recompile (due to files kept
> > open by running processes).
>
> A 512 Mb CF card is a bit painful. Many package
Stuart Henderson skrev:
>> Also, how would I identify a card with multi-sector IO.
>>
>
> You can tell by looking at dmesg -
>
> wd0 at pciide0 channel 0 drive 1:
> wd0: 1-sector PIO, LBA, 991MB, 2030112 sectors
>
> wd0 at pciide0 channel 0 drive 0:
> wd0: 4-sector PIO, LBA, 1953MB, 400176
Trevor Talbot skrev:
> On Dec 17, 2007, at 8:59 PM, Iustin Pop wrote:
>
>
>> On Mon, Dec 17, 2007 at 11:28:51PM +0100, Pontus wrote:
>>
>
>
>>> Oh, that sounds a bit discouraging. Isn't CF just a variant of the IDE
>>> bus, and should therefore be able to reach speeds of 33 - 133 MB/s
>>
Joel Jaeggli skrev:
> Trevor Talbot wrote:
>
>> On Dec 17, 2007, at 8:59 PM, Iustin Pop wrote:
>>
>>
>>> On Mon, Dec 17, 2007 at 11:28:51PM +0100, Pontus wrote:
>>>
Oh, that sounds a bit discouraging. Isn't CF just a variant of the IDE
bus, and should therefore be able to r
Hi
Has anyone had a chance of test the stability of external USB2 hard
disks attached to the 5501's USB port? Preferably under FreeBSD.
If I recall correctly, you can't boot from a USB hard disk because the
BIOS doesn't support it. But if I boot from some other device, is
there any reason
Trevor Talbot wrote:
> On Dec 17, 2007, at 8:59 PM, Iustin Pop wrote:
>
>> On Mon, Dec 17, 2007 at 11:28:51PM +0100, Pontus wrote:
>
>>> Oh, that sounds a bit discouraging. Isn't CF just a variant of the IDE
>>> bus, and should therefore be able to reach speeds of 33 - 133 MB/s
>>> depending on t
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