Date: Tue, 30 Jan 2018 07:59:31 +0100 From: Andre Albsmeier <Andre.Albsmeier@siemens.com> To: Eugene Grosbein <eugen@grosbein.net> Cc: Andre Albsmeier <Andre.Albsmeier@siemens.com>, freebsd-stable@freebsd.org Subject: Re: i386 with 4GB RAM: less than 2GB available on A2SAV (Intel Atom E3940) Message-ID: <20180130065931.GA43711@bali> In-Reply-To: <5A6DF168.3010902@grosbein.net> References: <20180128145703.GA80724@bali> <5A6DF168.3010902@grosbein.net>
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On Sun, 28-Jan-2018 at 22:51:04 +0700, Eugene Grosbein wrote: > 28.01.2018 21:57, Andre Albsmeier wrote: > > > I have a lot of machines running with 4 GB physical RAM and, for > > some reasons, I still have to use a 32 bits OS. > > > > All of them show something between 3 and 3.5 GB of RAM available > > in dmesg but the brand new Supermicro A2SAV really shocked me: > > > > FreeBSD 11.1-STABLE #0: Mon Jan 15 06:57:10 CET 2018 > > ... > > real memory = 4294967296 (4096 MB) > > avail memory = 1939558400 (1849 MB) > > ... > > > > So do people have any ideas how I might get a bit closer to at least > > 3 GB? I assume there are no FreeBSD knobs which might help but hope > > dies last... > > First, try to decrease amount of RAM dedicated to integrated video, if any (BIOS Setup). Done that. I have set everything as small as possible but this didn't help. After a BIOS upgrade, I found the promising option MAX TOLUD which was set to 2GB. I changed it to 3GB but nothing changed. > > Also, I'd like to know reasons that made you stick to 32 bit OS > as we have pretty good support for 32 bit applications running under 64 bit system. I (still) have 32 bit machines and don't want to maintain 2 userlands. Each machine has its own kernel but userland (updated via nfs) must remain 32 bit. Or is it possible to boot a 64 bit kernel and have everything else in 32 bit?
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