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Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you?

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Arlen Holder wrote:
> On 17 Sep 2018 06:53:34 GMT, Paul wrote:
> 
>> A review of the "LG Stylo 3 Plus" says it heats up quickly
>> and has short battery life. Would it be entering thermal
>> throttle state while you're testing ?
> 
> I bought a handful of these LG Stylo 3 Plus phones at Costco for $130 each
> last Christmas, where I haven't seen any "heating" or "short battery" life.
> <https://groups.google.com/d/msg/misc.phone.mobile.iphone/HDI8moW_4Pw/fFqp2LudAQAJ>
> 
>> Your miserable times probably aren't all that uncommon.
>>
>> https://forums.oneplus.com/threads/otg-usb-file-transfer-speed.503797/
>>
>>     "I have never seen transfer speeds over 3Mbs
>>      even for USB 2.0 thats pretty slow ? "
> 
> You always bring up good stuff Paul, where that forum showed flaky speeds,
> depending on a host of factors.
> 
> In my case, the desktop is old, and even worse perhaps, I'm using the USB
> hub inside the monitor where that's another level of abstraction.
> 
> Still, some speeds were an order of magnitude faster than others.
> But, as noted, it could be the order of my testing procedure
> (if cache is involved where I admit I never understood cache).
> 
> Likely I should reboot each time so as to have a valid start point.
> 
>> https://vxlabs.com/2014/11/06/use-adb-to-bypass-dog-slow-mtp-transfer-of-files-from-android-to-linux/
>>
>>     "This is beyond embarrassing."
>>
> 
> That was very useful Paul, as they got 1 megabit/second, and they said that
> ADB is faster than MTP which is "dog slow". They did surmise it might be a
> Linux-only problem, which I would disagree with since I tested to and from
> iOS which was an order of magnitude faster using the same Linux desktop as
> the OS host.
> 
> While they found ADB to be four times faster than MTP, any solution I come
> up with has to be cross platform, where iOS is always going to be the
> hardest one to overcome.

Don't click on this PDF while reading it. Do control-A to select all,
if you plan on copying something. If you click on the surface of the
document, the document tries to open a web page.

This pretends to be a performance analysis.

https://www.ijert.org/phocadownload/V1I9/IJERTV1IS9375.pdf

   "3. Even though double buffering is enabled in Nexus, both the read
       and write speeds are lesser than Snowball.
       From the bus transactions, it is seen that there is a lot of data
       corruption due to CRC16 errors. This results in the re-transmission
       of data every time data corruption occurs.
   "

Now, that's an effect I would never have considered.

Do you release products that constantly emit transmission
errors ? Is there a high demand for that ? If the customers
only knew. I wonder if there is a performance counter for
that one.

If you read other parts of that paper, you'll see the author
has drunk the koolaid. Yes, our friend DRM. It's what users
always wanted.

    "Lastly, MTP is also more secure than MSC, as it allows
     digital rights management (DRM) protected content to be
     transferred to a host.

     Thus, MTP is more user-friendly than MSC.
    "

   Paul

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Thread

Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Arlen Holder <arlenholder@nospam.net> - 2018-09-17 03:59 +0000
  Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Jasen Betts <jasen@xnet.co.nz> - 2018-09-17 07:01 +0000
    Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Arlen Holder <arlenholder@nospam.net> - 2018-09-18 03:25 +0000
  Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Dan Purgert <dan@djph.net> - 2018-09-17 10:47 +0000
    Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Arlen Holder <arlenholder@nospam.net> - 2018-09-18 03:27 +0000
      Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Dan Purgert <dan@djph.net> - 2018-09-18 10:00 +0000
        Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Arlen Holder <arlenholder@nospam.net> - 2018-09-19 04:22 +0000
  Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Paul <nospam@needed.invalid> - 2018-09-17 09:53 -0400
    Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Arlen Holder <arlenholder@nospam.net> - 2018-09-18 03:37 +0000
      Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Paul <nospam@needed.invalid> - 2018-09-18 00:33 -0400
        Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? "Arlen H. Holder" <arlenholder@nospam.net> - 2018-09-20 02:00 +0000
          Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Paul <nospam@needed.invalid> - 2018-09-20 05:55 -0400
            Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? "Arlen H. Holder" <arlenholder@nospam.net> - 2018-09-20 19:52 +0000
              Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? "Arlen H. Holder" <arlenholder@nospam.net> - 2018-09-20 19:58 +0000
        Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you? Mike Easter <MikeE@ster.invalid> - 2018-09-20 11:31 -0700

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