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Groups > comp.sys.raspberry-pi > #9265 > unrolled thread

Would a Raspberry Pi work for file sharing web sites?

Started bySeymore4Head <Seymore4Head@Hotmail.invalid>
First post2015-08-01 16:46 -0400
Last post2015-08-02 18:53 +0000
Articles 12 — 8 participants

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  Would a Raspberry Pi work for file sharing web sites? Seymore4Head <Seymore4Head@Hotmail.invalid> - 2015-08-01 16:46 -0400
    Re: Would a Raspberry Pi work for file sharing web sites? "A. Dumas" <alexandre@dumas.fr.invalid> - 2015-08-02 02:26 +0200
      Re: Would a Raspberry Pi work for file sharing web sites? druck <news@druck.org.uk> - 2015-08-03 22:21 +0100
        Re: Would a Raspberry Pi work for file sharing web sites? The Natural Philosopher <tnp@invalid.invalid> - 2015-08-04 07:40 +0100
        Re: Would a Raspberry Pi work for file sharing web sites? David Taylor <david-taylor@blueyonder.co.uk.invalid> - 2015-08-04 07:49 +0100
          Re: Would a Raspberry Pi work for file sharing web sites? Rob Morley <nospam@ntlworld.com> - 2015-08-04 20:29 +0100
          Re: Would a Raspberry Pi work for file sharing web sites? druck <news@druck.org.uk> - 2015-08-04 20:30 +0100
            Re: Would a Raspberry Pi work for file sharing web sites? David Taylor <david-taylor@blueyonder.co.uk.invalid> - 2015-08-05 08:16 +0100
    Re: Would a Raspberry Pi work for file sharing web sites? The Natural Philosopher <tnp@invalid.invalid> - 2015-08-02 01:40 +0100
      Re: Would a Raspberry Pi work for file sharing web sites? cl@isbd.net - 2015-08-02 09:48 +0100
        Re: Would a Raspberry Pi work for file sharing web sites? Seymore4Head <Seymore4Head@Hotmail.invalid> - 2015-08-02 12:06 -0400
          Re: Would a Raspberry Pi work for file sharing web sites? ray carter <ray@zianet.com> - 2015-08-02 18:53 +0000

#9265 — Would a Raspberry Pi work for file sharing web sites?

FromSeymore4Head <Seymore4Head@Hotmail.invalid>
Date2015-08-01 16:46 -0400
SubjectWould a Raspberry Pi work for file sharing web sites?
Message-ID<7abqra5rr4gd5dkebs70mnn5sn056ggvuc@4ax.com>
What I would like to do is get a Raspberry pi 2 and hook it to either
a network connection or to a USB network card.
http://www.newegg.com/Product/Product.aspx?Item=9SIA5YB2J42086
I assume I also need a 2T external USB drive and a 32G microSD card.

I was planning on using Teamviewer to access the PI and use FireFox
for web sharing sites.  Will kind of transfer speeds can the PI
handle?  I have a couple of sites that will transfer at 400KB/s.

I might also try using SABnzbd.

Is the Raspberry Pi 2 up to the task?

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#9267

From"A. Dumas" <alexandre@dumas.fr.invalid>
Date2015-08-02 02:26 +0200
Message-ID<55bd63a7$0$2837$e4fe514c@news2.news.xs4all.nl>
In reply to#9265
On 01/08/2015 22:46, Seymore4Head wrote:
> What I would like to do is get a Raspberry pi 2 and hook it to either
> a network connection or to a USB network card.
> [...] Will kind of transfer speeds can the PI
> handle?  I have a couple of sites that will transfer at 400KB/s.
> [...] Is the Raspberry Pi 2 up to the task?

Not really, or fine, depending on your expectations. 400 kilobyte or 400 
kilobit per second? The Pi (1 or 2) has only one internal USB hub and 
the ethernet plug is also connected via USB so ultimately all file 
transfer and network traffic must go over just one USB connection. 
That's a bottleneck and will drastically limit the theoretical speeds of 
480 Mbit/s of USB 2.0 and 100 Mbit/s of Fast Ethernet (which you 
wouldn't get anyway, even with with the fastest PC).

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#9292

Fromdruck <news@druck.org.uk>
Date2015-08-03 22:21 +0100
Message-ID<mpoltv$7bo$1@dont-email.me>
In reply to#9267
On 02/08/2015 01:26, A. Dumas wrote:
> Not really, or fine, depending on your expectations. 400 kilobyte or 400
> kilobit per second? The Pi (1 or 2) has only one internal USB hub and
> the ethernet plug is also connected via USB so ultimately all file
> transfer and network traffic must go over just one USB connection.

The Pi B can do at least 1MB/s from its SD card to Ethernet.

> That's a bottleneck and will drastically limit the theoretical speeds of
> 480 Mbit/s of USB 2.0 and 100 Mbit/s of Fast Ethernet (which you
> wouldn't get anyway, even with with the fastest PC).

The fastest PC's can saturate gigabit Ethernet, just about anything can 
do 100MB/s

---druck

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#9295

FromThe Natural Philosopher <tnp@invalid.invalid>
Date2015-08-04 07:40 +0100
Message-ID<mppmp9$qlt$1@news.albasani.net>
In reply to#9292
On 03/08/15 22:21, druck wrote:
> On 02/08/2015 01:26, A. Dumas wrote:
>> Not really, or fine, depending on your expectations. 400 kilobyte or 400
>> kilobit per second? The Pi (1 or 2) has only one internal USB hub and
>> the ethernet plug is also connected via USB so ultimately all file
>> transfer and network traffic must go over just one USB connection.
>
> The Pi B can do at least 1MB/s from its SD card to Ethernet.
>
>> That's a bottleneck and will drastically limit the theoretical speeds of
>> 480 Mbit/s of USB 2.0 and 100 Mbit/s of Fast Ethernet (which you
>> wouldn't get anyway, even with with the fastest PC).
>
> The fastest PC's can saturate gigabit Ethernet, just about anything can
> do 100MB/s
>
I certainly get 100Mbps speeds between two Linux machines of not 
particularly modern flavour, here, over 100Mbps ethernet...


> ---druck
>


-- 
New Socialism consists essentially in being seen to have your heart in 
the right place whilst your head is in the clouds and your hand is in 
someone else's pocket.

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#9296

FromDavid Taylor <david-taylor@blueyonder.co.uk.invalid>
Date2015-08-04 07:49 +0100
Message-ID<mppn7m$345$1@dont-email.me>
In reply to#9292
On 03/08/2015 22:21, druck wrote:
[]
> The fastest PC's can saturate gigabit Ethernet, just about anything can
> do 100MB/s
>
> ---druck

Do you mean bytes or bits?  100 MB/s or 100 Mbps?

-- 
Cheers,
David
Web: http://www.satsignal.eu

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#9316

FromRob Morley <nospam@ntlworld.com>
Date2015-08-04 20:29 +0100
Message-ID<20150804202922.59f322ec@ntlworld.com>
In reply to#9296
On Tue, 4 Aug 2015 07:49:58 +0100
David Taylor <david-taylor@blueyonder.co.uk.invalid> wrote:

> On 03/08/2015 22:21, druck wrote:
> []
> > The fastest PC's can saturate gigabit Ethernet, just about anything
> > can do 100MB/s
> >
> > ---druck
> 
> Do you mean bytes or bits?  100 MB/s or 100 Mbps?
> 
Is that Megabytes or Mebibytes?   :-)

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#9317

Fromdruck <news@druck.org.uk>
Date2015-08-04 20:30 +0100
Message-ID<mpr3qb$dpl$1@dont-email.me>
In reply to#9296
On 04/08/2015 07:49, David Taylor wrote:
> On 03/08/2015 22:21, druck wrote:
> []
>> The fastest PC's can saturate gigabit Ethernet, just about anything can
>> do 100MB/s
>>
>> ---druck
>
> Do you mean bytes or bits?  100 MB/s or 100 Mbps?
>
Sorry that should be bits as in 100BaseT.

---druck

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#9331

FromDavid Taylor <david-taylor@blueyonder.co.uk.invalid>
Date2015-08-05 08:16 +0100
Message-ID<mpsd4q$956$1@dont-email.me>
In reply to#9317
On 04/08/2015 20:30, druck wrote:
> On 04/08/2015 07:49, David Taylor wrote:
>> On 03/08/2015 22:21, druck wrote:
>> []
>>> The fastest PC's can saturate gigabit Ethernet, just about anything can
>>> do 100MB/s
>>>
>>> ---druck
>>
>> Do you mean bytes or bits?  100 MB/s or 100 Mbps?
>>
> Sorry that should be bits as in 100BaseT.
>
> ---druck

Thanks, Druck.  As I expected!

-- 
Cheers,
David
Web: http://www.satsignal.eu

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#9268

FromThe Natural Philosopher <tnp@invalid.invalid>
Date2015-08-02 01:40 +0100
Message-ID<mpjoue$4f5$2@news.albasani.net>
In reply to#9265
On 01/08/15 21:46, Seymore4Head wrote:
> What I would like to do is get a Raspberry pi 2 and hook it to either
> a network connection or to a USB network card.
> http://www.newegg.com/Product/Product.aspx?Item=9SIA5YB2J42086
> I assume I also need a 2T external USB drive and a 32G microSD card.
>
> I was planning on using Teamviewer to access the PI and use FireFox
> for web sharing sites.  Will kind of transfer speeds can the PI
> handle?  I have a couple of sites that will transfer at 400KB/s.
>
moving data down a network is far less onerous than moving pictures on a 
screen

> I might also try using SABnzbd.
>
> Is the Raspberry Pi 2 up to the task?
>
Almost certainly. Its a cheap way to find out

I have an atom based server fully capable of saturating a 100Mbps 
ethernet serving files

ARM is pretty close in MIPS.

OK you will need to use the USB - that might be the limiting factor. I 
dont know


-- 
New Socialism consists essentially in being seen to have your heart in 
the right place whilst your head is in the clouds and your hand is in 
someone else's pocket.

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#9269

Fromcl@isbd.net
Date2015-08-02 09:48 +0100
Message-ID<u3219c-a5r.ln1@esprimo.zbmc.eu>
In reply to#9268
Here are some results I have for data transfer speeds across a network
with a variety of hardware.  I'm afraid its in Dokuwiki internal text
format but it's fairly understandable I think (an advantage of
Dokuwiki):-


======Speed Tests======

These were done when I got a new 3Tb disk for backups to investigate the relative speeds
of copying files across the network.  All the tests were done __from__ //chris// to the 
named destination.

The //cp// column is for copying to an nfs mount, or in the case of //chris// to a local
filesystem.  Similarly for the //rsync to nfs// column for destination //chris// the copy
is to a local filesystem.

The USB 2.0 disk was in all cases my 750Gb eSata/USB drive with ext3 filesystem except for
one set of tests to raspberrypi with NTFS filesystem.


^  Destination  ^  Hardware    ^  Disk drive   ^  Connection   ^  Bandwidth  ^  cp         ^ rsync to nfs  ^ rsync direct  ^ rsync daemon  ^ comments                            ^
|  acer-aspire  | Intel Atom   |  Internal     |  100Mbs       |     94 Mb/s |   11.4 MB/s |     10.8 MB/s |     11.3 Mb/s |               | Limited wholly by connection speed  |
| :::           | :::          | :::           |  WiFi         |     22 Mb/s |    2.7 MB/s |      2.6 MB/s |      2.8 Mb/s |               | :::                                 |
| :::           | :::          |  USB 2.0      |  100Mbs       |     94 Mb/s |   11.6 MB/s |     10.4 MB/s |     11.1 Mb/s |               | :::                                 |
| :::           | :::          | :::           |  WiFi         |     22 Mb/s |    2.6 MB/s |      2.6 MB/s |      2.8 Mb/s |               | :::                                 |
|  chris        | Intel I3     |  Sata II      |  Same drive   |   3000 Mb/s |  108.1 MB/s |     63.9 MB/s |     71.4 MB/s |               |                                     |
| :::           | :::          | :::           |  Other drive  | :::         |  357.1 MB/s |     61.0 MB/s |    121.6 MB/s |               | :::                                 |
|  backup       | WD My Cloud  |  Internal     |  1000Mb/s     |    346 Mb/s |   10.4 MB/s |      9.6 MB/s |      1.4 MB/s |               | Mostly limited by processor speed   |
| :::           | :::          |  USB 2.0      | :::           | :::         |    8.7 MB/s |      8.3 MB/s |      1.4 MB/s |               | :::                                 |
|  beaglebone   | Arm          |  SD Memory    |  100Mb/s      |  94Mb/s     |    7.6 MB/s |      7.3 MB/s |      8.0 MB/s |               | Mostly limited by connection speed  |
| :::           | :::          |  USB 2.0 ext3 | :::           | :::         |   10.8 MB/s |     10.7 MB/s |      4.2 MB/s |               | :::                                 |
|  D-Link NAS   | Arm          |  Sata II      |  1000Mb/s     |             |    37.9MB/s |     37.0 MB/s |      4.6 MB/s |      21.2MB/s |                                     |
|  raspberrypi  | Arm          |  USB 2.0 NTFS |  100Mb/s      |     92 Mb/s |    2.4 MB/s |      2.5 MB/s |      1.8 MB/s |               |                                     |
| :::           | :::          |  USB 2.0 ext3 | :::           | :::         |    7.9 MB/s |      5.4 MB/s |      3.6 MB/s |               | :::                                 |
|  revo         | Intel Atom   |  Internal     |  1000Mb/s     |    911 Mb/s |   50.7 MB/s |     38.7 MB/s |     10.6 MB/s |               | Processor limited but quite good    |
| :::           | :::          |  USB 2.0      | :::           | :::         |   28.9 MB/s |     25.0 MB/s |     10.8 MB/s |               | :::                                 |
| :::           | :::          |  eSata        | :::           | :::         |   51.9 MB/s |     45.8 MB/s |     10.7 MB/s |               | :::                                 |
|  test         | Intel quad   |  Internal     |  1000Mb/s     |    850 Mb/s |   80.3 MB/s |     56.3 MB/s |     66.4 MB/s |               |                                     |
| :::           | :::          |  USB 2.0 ††   | :::           | :::         |   84.6 MB/s |     46.5 MB/s |     44.2 MB/s |               | :::                                 |
| :::           | :::          |  eSata        | :::           | :::         |   79.6 MB/s |     52.8 MB/s |     69.7 MB/s |               |                                     |
|  vigor        | Router USB   |  USB 2.0      |  1000Mb/s     |             |             |               |               |               |                                     |


†† Results for the USB 2.0 drive on the //test// machine were **very** variable, by a factor of up to 3:1 between best and worst
cases, I've listed about the best speeds obtained.

-- 
Chris Green
·

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#9271

FromSeymore4Head <Seymore4Head@Hotmail.invalid>
Date2015-08-02 12:06 -0400
Message-ID<nqfsrah0pjckek23pb097m8g8d57aconbq@4ax.com>
In reply to#9269
On Sun, 2 Aug 2015 09:48:30 +0100, cl@isbd.net wrote:

>Here are some results I have for data transfer speeds across a network
>with a variety of hardware.  I'm afraid its in Dokuwiki internal text
>format but it's fairly understandable I think (an advantage of
>Dokuwiki):-
>
>
>======Speed Tests======
>
>These were done when I got a new 3Tb disk for backups to investigate the relative speeds
>of copying files across the network.  All the tests were done __from__ //chris// to the 
>named destination.
>
>The //cp// column is for copying to an nfs mount, or in the case of //chris// to a local
>filesystem.  Similarly for the //rsync to nfs// column for destination //chris// the copy
>is to a local filesystem.
>
>The USB 2.0 disk was in all cases my 750Gb eSata/USB drive with ext3 filesystem except for
>one set of tests to raspberrypi with NTFS filesystem.
>
>
>^  Destination  ^  Hardware    ^  Disk drive   ^  Connection   ^  Bandwidth  ^  cp         ^ rsync to nfs  ^ rsync direct  ^ rsync daemon  ^ comments                            ^
>|  acer-aspire  | Intel Atom   |  Internal     |  100Mbs       |     94 Mb/s |   11.4 MB/s |     10.8 MB/s |     11.3 Mb/s |               | Limited wholly by connection speed  |
>| :::           | :::          | :::           |  WiFi         |     22 Mb/s |    2.7 MB/s |      2.6 MB/s |      2.8 Mb/s |               | :::                                 |
>| :::           | :::          |  USB 2.0      |  100Mbs       |     94 Mb/s |   11.6 MB/s |     10.4 MB/s |     11.1 Mb/s |               | :::                                 |
>| :::           | :::          | :::           |  WiFi         |     22 Mb/s |    2.6 MB/s |      2.6 MB/s |      2.8 Mb/s |               | :::                                 |
>|  chris        | Intel I3     |  Sata II      |  Same drive   |   3000 Mb/s |  108.1 MB/s |     63.9 MB/s |     71.4 MB/s |               |                                     |
>| :::           | :::          | :::           |  Other drive  | :::         |  357.1 MB/s |     61.0 MB/s |    121.6 MB/s |               | :::                                 |
>|  backup       | WD My Cloud  |  Internal     |  1000Mb/s     |    346 Mb/s |   10.4 MB/s |      9.6 MB/s |      1.4 MB/s |               | Mostly limited by processor speed   |
>| :::           | :::          |  USB 2.0      | :::           | :::         |    8.7 MB/s |      8.3 MB/s |      1.4 MB/s |               | :::                                 |
>|  beaglebone   | Arm          |  SD Memory    |  100Mb/s      |  94Mb/s     |    7.6 MB/s |      7.3 MB/s |      8.0 MB/s |               | Mostly limited by connection speed  |
>| :::           | :::          |  USB 2.0 ext3 | :::           | :::         |   10.8 MB/s |     10.7 MB/s |      4.2 MB/s |               | :::                                 |
>|  D-Link NAS   | Arm          |  Sata II      |  1000Mb/s     |             |    37.9MB/s |     37.0 MB/s |      4.6 MB/s |      21.2MB/s |                                     |
>|  raspberrypi  | Arm          |  USB 2.0 NTFS |  100Mb/s      |     92 Mb/s |    2.4 MB/s |      2.5 MB/s |      1.8 MB/s |               |                                     |
>| :::           | :::          |  USB 2.0 ext3 | :::           | :::         |    7.9 MB/s |      5.4 MB/s |      3.6 MB/s |               | :::                                 |
>|  revo         | Intel Atom   |  Internal     |  1000Mb/s     |    911 Mb/s |   50.7 MB/s |     38.7 MB/s |     10.6 MB/s |               | Processor limited but quite good    |
>| :::           | :::          |  USB 2.0      | :::           | :::         |   28.9 MB/s |     25.0 MB/s |     10.8 MB/s |               | :::                                 |
>| :::           | :::          |  eSata        | :::           | :::         |   51.9 MB/s |     45.8 MB/s |     10.7 MB/s |               | :::                                 |
>|  test         | Intel quad   |  Internal     |  1000Mb/s     |    850 Mb/s |   80.3 MB/s |     56.3 MB/s |     66.4 MB/s |               |                                     |
>| :::           | :::          |  USB 2.0 ††   | :::           | :::         |   84.6 MB/s |     46.5 MB/s |     44.2 MB/s |               | :::                                 |
>| :::           | :::          |  eSata        | :::           | :::         |   79.6 MB/s |     52.8 MB/s |     69.7 MB/s |               |                                     |
>|  vigor        | Router USB   |  USB 2.0      |  1000Mb/s     |             |             |               |               |               |                                     |
>
>
>†† Results for the USB 2.0 drive on the //test// machine were **very** variable, by a factor of up to 3:1 between best and worst
>cases, I've listed about the best speeds obtained.

I assume I could use my current computer and change the download drive
to a USB drive and see how the speeds would change.
At times I do have 2 connections transferring at 400 K Bytes/s.

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#9275

Fromray carter <ray@zianet.com>
Date2015-08-02 18:53 +0000
Message-ID<d2779dF7128U1@mid.individual.net>
In reply to#9271
On Sun, 02 Aug 2015 12:06:17 -0400, Seymore4Head wrote:

> On Sun, 2 Aug 2015 09:48:30 +0100, cl@isbd.net wrote:
> 
>>Here are some results I have for data transfer speeds across a network
>>with a variety of hardware.  I'm afraid its in Dokuwiki internal text
>>format but it's fairly understandable I think (an advantage of
>>Dokuwiki):-
>>
>>
>>======Speed Tests======
>>
>>These were done when I got a new 3Tb disk for backups to investigate the
>>relative speeds of copying files across the network.  All the tests were
>>done __from__ //chris// to the named destination.
>>
>>The //cp// column is for copying to an nfs mount, or in the case of
>>//chris// to a local filesystem.  Similarly for the //rsync to nfs//
>>column for destination //chris// the copy is to a local filesystem.
>>
>>The USB 2.0 disk was in all cases my 750Gb eSata/USB drive with ext3
>>filesystem except for one set of tests to raspberrypi with NTFS
>>filesystem.
>>
>>
>>^  Destination  ^  Hardware    ^  Disk drive   ^  Connection   ^ 
>>Bandwidth  ^  cp         ^ rsync to nfs  ^ rsync direct  ^ rsync daemon 
>>^ comments                            ^ |  acer-aspire  | Intel Atom   |
>> Internal     |  100Mbs       |     94 Mb/s |   11.4 MB/s |     10.8
>>MB/s |     11.3 Mb/s |               | Limited wholly by connection
>>speed  | | :::           | :::          | :::           |  WiFi        
>>|     22 Mb/s |    2.7 MB/s |      2.6 MB/s |      2.8 Mb/s |           
>>   | :::                                 | | :::           | :::        
>> |  USB 2.0      |  100Mbs       |     94 Mb/s |   11.6 MB/s |     10.4
>>MB/s |     11.1 Mb/s |               | :::                              
>>  | | :::           | :::          | :::           |  WiFi         |    
>>22 Mb/s |    2.6 MB/s |      2.6 MB/s |      2.8 Mb/s |               |
>>:::                                 | |  chris        | Intel I3     | 
>>Sata II      |  Same drive   |   3000 Mb/s |  108.1 MB/s |     63.9 MB/s
>>|     71.4 MB/s |               |                                     |
>>| :::           | :::          | :::           |  Other drive  | :::    
>>    |  357.1 MB/s |     61.0 MB/s |    121.6 MB/s |               | ::: 
>>                               | |  backup       | WD My Cloud  | 
>>Internal     |  1000Mb/s     |    346 Mb/s |   10.4 MB/s |      9.6 MB/s
>>|      1.4 MB/s |               | Mostly limited by processor speed   |
>>| :::           | :::          |  USB 2.0      | :::           | :::    
>>    |    8.7 MB/s |      8.3 MB/s |      1.4 MB/s |               | ::: 
>>                               | |  beaglebone   | Arm          |  SD
>>Memory    |  100Mb/s      |  94Mb/s     |    7.6 MB/s |      7.3 MB/s | 
>>    8.0 MB/s |               | Mostly limited by connection speed  | |
>>:::           | :::          |  USB 2.0 ext3 | :::           | :::      
>>  |   10.8 MB/s |     10.7 MB/s |      4.2 MB/s |               | :::   
>>                             | |  D-Link NAS   | Arm          |  Sata II
>>     |  1000Mb/s     |             |    37.9MB/s |     37.0 MB/s |     
>>4.6 MB/s |      21.2MB/s |                                     | | 
>>raspberrypi  | Arm          |  USB 2.0 NTFS |  100Mb/s      |     92
>>Mb/s |    2.4 MB/s |      2.5 MB/s |      1.8 MB/s |               |    
>>                                | | :::           | :::          |  USB
>>2.0 ext3 | :::           | :::         |    7.9 MB/s |      5.4 MB/s |  
>>   3.6 MB/s |               | :::                                 | | 
>>revo         | Intel Atom   |  Internal     |  1000Mb/s     |    911
>>Mb/s |   50.7 MB/s |     38.7 MB/s |     10.6 MB/s |               |
>>Processor limited but quite good    | | :::           | :::          | 
>>USB 2.0      | :::           | :::         |   28.9 MB/s |     25.0 MB/s
>>|     10.8 MB/s |               | :::                                 |
>>| :::           | :::          |  eSata        | :::           | :::    
>>    |   51.9 MB/s |     45.8 MB/s |     10.7 MB/s |               | ::: 
>>                               | |  test         | Intel quad   | 
>>Internal     |  1000Mb/s     |    850 Mb/s |   80.3 MB/s |     56.3 MB/s
>>|     66.4 MB/s |               |                                     |
>>| :::           | :::          |  USB 2.0 ††   | :::           
| :::    
>>    |   84.6 MB/s |     46.5 MB/s |     44.2 MB/s |               | ::: 
>>                               |
>>| :::           | :::          |  eSata        | :::           | :::    
>>    |   79.6 MB/s |     52.8 MB/s |     69.7 MB/s |               |     
>>                               | |  vigor        | Router USB   |  USB
>>2.0      |  1000Mb/s     |             |             |               |  
>>            |               |                                     |
>>
>>
>>†† Results for the USB 2.0 drive on the //test// machine were **very**
>>variable, by a factor of up to 3:1 between best and worst cases, I've
>>listed about the best speeds obtained.
> 
> I assume I could use my current computer and change the download drive
> to a USB drive and see how the speeds would change.
> At times I do have 2 connections transferring at 400 K Bytes/s.

The built in network connector on the PIs also runs off the USB, so you 
might want to try it with a USB network interface and check they're on 
the same controller.

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