Re: Deb10 installer can't install grub

From	<tomas@tuxteam.de>
Newsgroups	linux.debian.user
Subject	Re: Deb10 installer can't install grub
Date	2021-03-04 10:10 +0100
Message-ID	<BOS9z-4mp-7@gated-at.bofh.it> (permalink)
References	(1 earlier) <BOcN3-3KC-7@gated-at.bofh.it> <BOiz7-7vI-5@gated-at.bofh.it> <BOC4O-2f0-3@gated-at.bofh.it> <BOI0x-6m1-5@gated-at.bofh.it> <BOItz-6vD-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Wed, Mar 03, 2021 at 05:40:39PM -0500, Dan Ritter wrote:
> Felix Miata wrote: 
> > Andrei POPESCU composed on 2021-03-03 17:50 (UTC+0200):
> > 
> > > Felix Miata wrote:
> > [...] Do
> > you know of, or can you provide a reference to, any way RAID1 performance can be
> > better than single disk?
> 
> Sure.
> 
> https://calomel.org/zfs_raid_speed_capacity.html
> 
> First two lines of the first table of results:
> 
> 1x 4TB, single drive,          3.7 TB,  w=108MB/s , rw=50MB/s  , r=204MB/s 
> 2x 4TB, mirror (raid1),        3.7 TB,  w=106MB/s , rw=50MB/s , r=488MB/s 
> 
> Which is as theory predicts: slight reduction in write
> performance (write being dominated by disk cache -> disk, not
> system -> disk cache), and approximate doubling in read
> performance.

Thanks. Real data :)

The doubling in read throughput is somewhat surprising to me. Some
learning to do, it seems.

Cheers
 - t

Thread

Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-02 13:30 +0100
  Re: Deb10 installer can't install grub Dan Ritter <dsr@randomstring.org> - 2021-03-02 14:00 +0100
    Re: Deb10 installer can't install grub The Wanderer <wanderer@fastmail.fm> - 2021-03-02 14:30 +0100
      Re: Deb10 installer can't install grub Dan Ritter <dsr@randomstring.org> - 2021-03-02 16:00 +0100
        Re: Deb10 installer can't install grub The Wanderer <wanderer@fastmail.fm> - 2021-03-02 16:00 +0100
        Re: Deb10 installer can't install grub Charles Curley <charlescurley@charlescurley.com> - 2021-03-02 17:20 +0100
    Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-02 15:10 +0100
      Re: Deb10 installer can't install grub The Wanderer <wanderer@fastmail.fm> - 2021-03-02 15:20 +0100
        Re: Deb10 installer can't install grub The Wanderer <wanderer@fastmail.fm> - 2021-03-02 15:30 +0100
          Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-02 15:40 +0100
        Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-02 15:30 +0100
    Re: Deb10 installer can't install grub Felix Miata <mrmazda@earthlink.net> - 2021-03-02 20:10 +0100
      Re: Deb10 installer can't install grub Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-03 17:00 +0100
        Re: Deb10 installer can't install grub Felix Miata <mrmazda@earthlink.net> - 2021-03-03 23:20 +0100
          Re: Deb10 installer can't install grub Dan Ritter <dsr@randomstring.org> - 2021-03-03 23:50 +0100
            Re: Deb10 installer can't install grub <tomas@tuxteam.de> - 2021-03-04 10:10 +0100
              Re: Deb10 installer can't install grub Greg Wooledge <greg@wooledge.org> - 2021-03-04 14:20 +0100
                Re: Deb10 installer can't install grub <tomas@tuxteam.de> - 2021-03-04 14:30 +0100
                Re: Deb10 installer can't install grub Anssi Saari <as@sci.fi> - 2021-03-05 10:30 +0100
                Re: Deb10 installer can't install grub Darac Marjal <mailinglist@darac.org.uk> - 2021-03-05 11:10 +0100
                Re: Deb10 installer can't install grub Andy Smith <andy@strugglers.net> - 2021-03-05 13:00 +0100
          Re: Deb10 installer can't install grub <tomas@tuxteam.de> - 2021-03-04 10:10 +0100
          Re: Deb10 installer can't install grub Andrei POPESCU <andreimpopescu@gmail.com> - 2021-03-05 14:50 +0100
  Re: Deb10 installer can't install grub "Andrew M.A. Cater" <amacater@einval.com> - 2021-03-02 22:00 +0100
  Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-03 10:00 +0100
    SOLVED - Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-03 12:30 +0100
      Re: SOLVED - Re: Deb10 installer can't install grub Marc Auslander <marcausl@gmail.com> - 2021-03-03 16:50 +0100
        Re: SOLVED - Re: Deb10 installer can't install grub Dave Sherohman <dave@sherohman.org> - 2021-03-07 14:10 +0100
          Re: SOLVED - Re: Deb10 installer can't install grub Nicholas Geovanis <nickgeovanis@gmail.com> - 2021-03-07 15:10 +0100
    Re: Deb10 installer can't install grub Anssi Saari <as@sci.fi> - 2021-03-04 10:10 +0100

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