why pae kernel has only 3G memory

From	lou <loushanguan2015@sina.com>
Newsgroups	linux.debian.user
Subject	why pae kernel has only 3G memory
Date	2021-10-15 10:30 +0200
Message-ID	<D8qLf-7ig-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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i have stretch, it use 3G memory, 1G memory can't be used

top: KiB Mem :  3038696 total,  2221904 free,   400628 used, 416164 
buff/cache
uname: Linux debian 4.9.0-13-686-pae #1 SMP Debian 4.9.228-1 
(2020-07-05) i686 GNU/Linux

i think pae kernel can use 4G memory

do i have to upgrade to buster or bullseye?

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why pae kernel has only 3G memory lou <loushanguan2015@sina.com> - 2021-10-15 10:30 +0200
  Re: why pae kernel has only 3G memory Andy Smith <andy@strugglers.net> - 2021-10-15 11:00 +0200
    Re: why pae kernel has only 3G memory lou <loushanguan2015@sina.com> - 2021-10-15 11:30 +0200
      Re: why pae kernel has only 3G memory piorunz <piorunz@gmx.com> - 2021-10-15 12:00 +0200
    Re: why pae kernel has only 3G memory Teemu Likonen <tlikonen@iki.fi> - 2021-10-15 11:50 +0200
      Re: why pae kernel has only 3G memory lou <loushanguan2015@sina.com> - 2021-10-15 13:50 +0200
        Re: why pae kernel has only 3G memory David Wright <deblis@lionunicorn.co.uk> - 2021-10-15 17:10 +0200
          Re: why pae kernel has only 3G memory "Andrew M.A. Cater" <amacater@einval.com> - 2021-10-16 15:10 +0200
            Re: why pae kernel has only 3G memory Stefan Monnier <monnier@iro.umontreal.ca> - 2021-10-16 16:40 +0200
              Re: why pae kernel has only 3G memory lou <loushanguan2015@sina.com> - 2021-10-17 01:00 +0200
                Re: why pae kernel has only 3G memory deloptes <emanoil.kotsev@deloptes.org> - 2021-10-17 11:00 +0200

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