Date: Tue, 03 Jan 2023 14:46:08 +0000 From: Jonathan Vasquez <jon@xyinn.org> To: eivinde@terraplane.org, eugen@grosbein.net Cc: freebsd-stable@freebsd.org Subject: Re: Memory question Message-ID: <SZRYzxs_QjHXHXahN40oJhtpSSZaBDFmgU6Yu-u4eNEbwC3912aukmPN7RNM4RPk4Azu8VRqoARINLVjcvBDcu7DIfGqGgwef-f9hZwaB_o=@xyinn.org> In-Reply-To: <20230103151824.196420f1@elg.hjerdalen.lokalnett> References: <20230103140404.5f71b0ad@elg.hjerdalen.lokalnett> <c25ca623-a587-b8cf-927f-4b7978ea2329@grosbein.net> <20230103143716.703d42ca@elg.hjerdalen.lokalnett> <20230103151824.196420f1@elg.hjerdalen.lokalnett>
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[-- Attachment #1 --] I know for Intel mobos (and prolly AMD follows the same guidelines) for double buffered memory, the identical slots should be placed in slot 1+3 and 2+4. I noticed slot 1 and 2 is 8GB and 3 and 4 are 4 GB. Try putting the 8GB in 1+3, and 4 GB in 2+4, and see if that makes any difference. It may not be double buffer but I'm banking on that behavior. Jonathan Vasquez PGP: 34DA 858C 1447 509E C77A D49F FB85 90B7 C4CA 5279 Sent with ProtonMail Secure Email Sent from Proton Mail mobile -------- Original Message -------- On Jan 3, 2023, 09:17, Eivind Nicolay Evensen wrote: > Den Tue, 3 Jan 2023 14:37:16 +0100 skrev Eivind Nicolay Evensen : > Den Tue, 3 Jan 2023 20:09:14 +0700 > skrev Eugene Grosbein : > > > 03.01.2023 20:04, Eivind Nicolay Evensen wrote: > > > > > This might be more related to a bios setting or issue, but I hope > > > somebody can give me hints in the right direction to remedy or > > > at least diagnose this issue further. > > > > > > I installed more memory in one machine and now I see this > > > in dmesg: > > > > > > real memory = 25769803776 (24576 MB) > > > avail memory = 8237150208 (7855 MB) > > > > > > Real should be right, from before there were two 4 GB dimms in > > > there, and I inserted two more 8 GB ones. > > > > > > Transcribed from BIOS: > > > > > > DIMM(s) 1 2 > > > 3 4 Installed Size 8192 > > > 8192 4096 4096 Enabled > > > Size 8192 8192 > > > 4096 4096 Total Size 24576 > > > > > > I was wondering if the reason could be that this machine has been > > > updated since older versions and bootloader may be old or > > > whatever, so I also tried booting a linux. However, that also > > > only uses 8 GB, and says (at least in a way I understand) less > > > about what it can really see. > > > > > > This is amd64 FreeBSD 13.1. > > > > > > Is there any way I can use the rest of the memory? Or at least > > > find out which dimms it is actually using? > > > > I was in similar situation once. There was Atom-based hardware setup > > with CPU not having embedded memory controller; instead, it used > > memory controller on motherboard. That memory controller had similar > > limitation. One cannot overcome it. > > > > You should specify your hardware. > > > > > > Thanks for the comments. > > Here's the dmesg: I received a private reply that dmidecode would be of better help. Since the output is rather large I put it here: http://www.stigaas.no/m/dmi.txt -- Eivind Nicolay Evensen [-- Attachment #2 --] I know for Intel mobos (and prolly AMD follows the same guidelines) for double buffered memory, the identical slots should be placed in slot 1+3 and 2+4. I noticed slot 1 and 2 is 8GB and 3 and 4 are 4 GB. Try putting the 8GB in 1+3, and 4 GB in 2+4, and see if that makes any difference. It may not be double buffer but I'm banking on that behavior.<br><br><br><div>Jonathan Vasquez<br /></div><div>PGP: 34DA 858C 1447 509E C77A D49F FB85 90B7 C4CA 5279<br /></div><div>Sent with ProtonMail Secure Email<br /></div><div><br /></div><br><br>Sent from Proton Mail mobile<br><br><br><br>-------- Original Message --------<br>On Jan 3, 2023, 09:17, Eivind Nicolay Evensen < eivinde@terraplane.org> wrote:<blockquote class="protonmail_quote"><br>Den Tue, 3 Jan 2023 14:37:16 +0100 skrev Eivind Nicolay Evensen <eivinde@terraplane.org>: > Den Tue, 3 Jan 2023 20:09:14 +0700 > skrev Eugene Grosbein <eugen@grosbein.net>: > > > 03.01.2023 20:04, Eivind Nicolay Evensen wrote: > > > > > This might be more related to a bios setting or issue, but I hope > > > somebody can give me hints in the right direction to remedy or > > > at least diagnose this issue further. > > > > > > I installed more memory in one machine and now I see this > > > in dmesg: > > > > > > real memory = 25769803776 (24576 MB) > > > avail memory = 8237150208 (7855 MB) > > > > > > Real should be right, from before there were two 4 GB dimms in > > > there, and I inserted two more 8 GB ones. > > > > > > Transcribed from BIOS: > > > > > > DIMM(s) 1 2 > > > 3 4 Installed Size 8192 > > > 8192 4096 4096 Enabled > > > Size 8192 8192 > > > 4096 4096 Total Size 24576 > > > > > > I was wondering if the reason could be that this machine has been > > > updated since older versions and bootloader may be old or > > > whatever, so I also tried booting a linux. However, that also > > > only uses 8 GB, and says (at least in a way I understand) less > > > about what it can really see. > > > > > > This is amd64 FreeBSD 13.1. > > > > > > Is there any way I can use the rest of the memory? Or at least > > > find out which dimms it is actually using? > > > > I was in similar situation once. There was Atom-based hardware setup > > with CPU not having embedded memory controller; instead, it used > > memory controller on motherboard. That memory controller had similar > > limitation. One cannot overcome it. > > > > You should specify your hardware. > > > > > > Thanks for the comments. > > Here's the dmesg: I received a private reply that dmidecode would be of better help. Since the output is rather large I put it here: http://www.stigaas.no/m/dmi.txt -- Eivind Nicolay Evensen </div>home | help
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