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

From Dan Purgert <dan@djph.net>
Newsgroups alt.os.linux
Subject Re: Do these USB transfer times on Ubuntu 18.04 to mobile devices make sense to you?
Date 2018-09-18 10:00 +0000
Organization A noiseless patient Spider
Message-ID <slrnpq1j5v.6s3.dan@xps-linux.djph.net> (permalink)
References <pnn8q8$893$1@news.mixmin.net> <slrnppv1ha.6s3.dan@xps-linux.djph.net> <pnprb5$m0k$1@news.mixmin.net>

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Arlen Holder wrote:
> On 17 Sep 2018 10:47:06 GMT, Dan Purgert wrote:
>
>> Yes, the first go you had to read from (most likely) spinning rust into
>> cache (RAM).
>> 
>> After that, you were reading from (and potentially writing to) cache,
>> rather than the harddrive itself.
>
> There may be merit to that since I "re-used" already selected files.
> In the next test, I'll switch the order around.
> And I'll close all the already-open windows.

That won't change anything.  You'll need to flush the disk buffers /
cache.

Minimally, youll need this: 
  sync; echo 1 > /proc/sys/vm/drop_caches


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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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