Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD

From	Michael Stone <mstone@debian.org>
Newsgroups	linux.debian.user
Subject	Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD
Date	2022-01-04 19:20 +0100
Message-ID	<DBWzD-b4-9@gated-at.bofh.it> (permalink)
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On Mon, Jan 03, 2022 at 08:51:59PM -0300, Jorge P. de Morais Neto wrote:
>But doesn't Btrfs compression work with small blocks?
>
>https://btrfs.wiki.kernel.org/index.php/Compression#Are_there_speed_penalties_when_doing_random_access_to_a_compressed_file.3F

Relatively small, which makes it fairly inefficient. But large enough 
that rewriting means writing much more than one (4k) block; what that 
means in terms of write amplification is highly workload dependent. 

There are good reasons that when file compression is expected to be 
significant, it is done at the application level. 

>Fedora change proposal of Btrfs transparent compression by default
>mentions increased flash-based media lifespan in the summary:
>
>https://fedoraproject.org/wiki/Changes/BtrfsTransparentCompression#Summary

I understand that it says that, but it doesn't show its work and I'm 
skeptical that it's anything but cargo-cult repetition.

Thread

Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "Jorge P. de Morais Neto" <jorge+list@disroot.org> - 2021-12-08 15:30 +0100
  Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-08 16:00 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-08 20:40 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-09 00:00 +0100
        Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2022-01-02 17:40 +0100
          Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2022-01-03 00:40 +0100
            Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2022-01-03 12:50 +0100
              Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Michael Stone <mstone@debian.org> - 2022-01-03 16:20 +0100
                Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Dan Ritter <dsr@randomstring.org> - 2022-01-03 17:00 +0100
                Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Michael Stone <mstone@debian.org> - 2022-01-03 19:30 +0100
                Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2022-01-04 01:00 +0100
                Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Michael Stone <mstone@debian.org> - 2022-01-04 19:20 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-09 14:30 +0100
  Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "Alexander V. Makartsev" <avbetev@gmail.com> - 2021-12-09 01:20 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Andy Smith <andy@strugglers.net> - 2021-12-09 02:10 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-15 15:50 +0100
        Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Andy Smith <andy@strugglers.net> - 2021-12-16 04:30 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-09 11:30 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "Alexander V. Makartsev" <avbetev@gmail.com> - 2021-12-09 16:30 +0100
        Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-09 17:20 +0100
          Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD piorunz <piorunz@gmx.com> - 2021-12-09 18:30 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-15 15:40 +0100
  Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD David Christensen <dpchrist@holgerdanske.com> - 2021-12-09 07:10 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-14 18:50 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD David Christensen <dpchrist@holgerdanske.com> - 2021-12-15 03:50 +0100
        Re: Why MBR partitioning (was: Reasonably simple setup for 1...) Felix Miata <mrmazda@earthlink.net> - 2021-12-15 04:00 +0100
          Re: Why MBR partitioning (was: Reasonably simple setup for 1...) David Christensen <dpchrist@holgerdanske.com> - 2021-12-15 05:20 +0100
          Re: Why MBR partitioning (was: Reasonably simple setup for 1...) "Thomas Schmitt" <scdbackup@gmx.net> - 2021-12-15 09:10 +0100
  Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Anssi Saari <as@sci.fi> - 2021-12-09 10:40 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Dan Ritter <dsr@randomstring.org> - 2021-12-09 13:10 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-14 18:40 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Andrei POPESCU <andreimpopescu@gmail.com> - 2021-12-15 21:30 +0100
  Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "hdv@gmail" <hdv.jadev@gmail.com> - 2021-12-09 15:10 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Dan Ritter <dsr@randomstring.org> - 2021-12-09 16:10 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "hdv@gmail" <hdv.jadev@gmail.com> - 2021-12-09 16:50 +0100
        Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Curt <curty@free.fr> - 2021-12-09 18:30 +0100
          Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD David Wright <deblis@lionunicorn.co.uk> - 2021-12-10 06:00 +0100
            Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Darac Marjal <mailinglist@darac.org.uk> - 2021-12-10 10:30 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Stefan Monnier <monnier@iro.umontreal.ca> - 2021-12-10 05:10 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Andrei POPESCU <andreimpopescu@gmail.com> - 2021-12-10 10:40 +0100
        Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Dan Ritter <dsr@randomstring.org> - 2021-12-10 13:40 +0100
          Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Andrei POPESCU <andreimpopescu@gmail.com> - 2021-12-10 14:00 +0100
            Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Dan Ritter <dsr@randomstring.org> - 2021-12-10 15:10 +0100
              Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Charles Curley <charlescurley@charlescurley.com> - 2021-12-11 02:10 +0100
                Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "Andrew M.A. Cater" <amacater@einval.com> - 2021-12-11 12:30 +0100
          Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Darac Marjal <mailinglist@darac.org.uk> - 2021-12-10 14:20 +0100
    Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD Jorge P. de Morais Neto <jorge+list@disroot.org> - 2021-12-15 16:00 +0100
      Re: Reasonably simple setup for 1TB HDD and 250GB M.2 NVMe SSD "hdv@gmail" <hdv.jadev@gmail.com> - 2021-12-15 16:30 +0100

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