* [gentoo-user] Less available memory than installed
@ 2021-06-03 17:16 Toldi Balázs
2021-06-03 18:59 ` Wols Lists
` (3 more replies)
0 siblings, 4 replies; 6+ messages in thread
From: Toldi Balázs @ 2021-06-03 17:16 UTC (permalink / raw
To: gentoo-user
Hello!
In my current PC I have 16 GB of RAM installed. It worked fine until
today, when I upgraded my CPU from a Ryzen 5 1500X to a Ryzen 7 2700.
The system boots up just fine, but when I use the free command the total
memory is only 8 GB. When I looked into the BIOS, it showed me the
correct amount. What should I do?
Output of some relevant commands:
free -h
total used free shared buff/cache
available
Mem: 7,8Gi 4,4Gi 874Mi 192Mi 2,5Gi 3,1Gi
cat /proc/meminfo
MemTotal: 8158220 kB
MemFree: 910036 kB
MemAvailable: 3275008 kB
Buffers: 2848 kB
Cached: 2492392 kB
SwapCached: 260 kB
Active: 1622988 kB
Inactive: 4198676 kB
Active(anon): 9500 kB
Inactive(anon): 3507660 kB
Active(file): 1613488 kB
Inactive(file): 691016 kB
Unevictable: 64 kB
Mlocked: 64 kB
SwapTotal: 16777212 kB
SwapFree: 16775140 kB
Dirty: 732 kB
Writeback: 0 kB
AnonPages: 3326444 kB
Mapped: 1322720 kB
Shmem: 193816 kB
KReclaimable: 160248 kB
Slab: 556240 kB
SReclaimable: 160248 kB
SUnreclaim: 395992 kB
KernelStack: 32704 kB
PageTables: 58964 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 20856320 kB
Committed_AS: 15151980 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 260776 kB
VmallocChunk: 0 kB
Percpu: 10944 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
DirectMap4k: 1638688 kB
DirectMap2M: 6699008 kB
DirectMap1G: 1048576 kB
lshw -C memory
*-memory
description: System Memory
physical id: 27
slot: System board or motherboard
size: 7967MiB
*-bank:0
description: [empty]
product: Unknown
vendor: Unknown
physical id: 0
serial: Unknown
slot: DIMM 0
*-bank:1
description: DIMM DDR4 Synchronous Unbuffered (Unregistered)
2400 MHz (0,4 ns) [empty]
product: 9905702-120.A00G
vendor: Kingston
physical id: 1
serial: EE963485
slot: DIMM 1
width: 64 bits
clock: 2400MHz (0.4ns)
*-bank:2
description: [empty]
product: Unknown
vendor: Unknown
physical id: 2
serial: Unknown
slot: DIMM 0
*-bank:3
description: DIMM DDR4 Synchronous Unbuffered (Unregistered)
2400 MHz (0,4 ns) [empty]
product: Unknown
vendor: Unknown
physical id: 3
serial: 08240800
slot: DIMM 1
width: 64 bits
clock: 2400MHz (0.4ns)
uname -a
Linux GlaDOS 5.10.27-gentoo #4 SMP Thu Jun 3 18:19:23 CEST 2021 x86_64
AMD Ryzen 7 2700 Eight-Core Processor AuthenticAMD GNU/Linux
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [gentoo-user] Less available memory than installed
2021-06-03 17:16 [gentoo-user] Less available memory than installed Toldi Balázs
@ 2021-06-03 18:59 ` Wols Lists
2021-06-03 19:03 ` Dale
` (2 subsequent siblings)
3 siblings, 0 replies; 6+ messages in thread
From: Wols Lists @ 2021-06-03 18:59 UTC (permalink / raw
To: gentoo-user
On 03/06/21 18:16, Toldi Balázs wrote:
> Hello!
>
> In my current PC I have 16 GB of RAM installed. It worked fine until
> today, when I upgraded my CPU from a Ryzen 5 1500X to a Ryzen 7 2700.
> The system boots up just fine, but when I use the free command the total
> memory is only 8 GB. When I looked into the BIOS, it showed me the
> correct amount. What should I do?
What does the mobo manual say? Are your memory boards in the correct
banks? It could be the MMU in the Ryzen 7 insists on banks 1 & 2 being
filled before 3 & 4 while the 5 isn't so fussy.
I don't know about this, not having this sort of problem before, but I
do know from building my own systems that the memory boards need to be
paired up correctly, however you define "correct" ...
Cheers,
Wol
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [gentoo-user] Less available memory than installed
2021-06-03 17:16 [gentoo-user] Less available memory than installed Toldi Balázs
2021-06-03 18:59 ` Wols Lists
@ 2021-06-03 19:03 ` Dale
2021-06-03 19:09 ` thelma
2021-06-03 20:20 ` [SOLVED] " Toldi Balázs
3 siblings, 0 replies; 6+ messages in thread
From: Dale @ 2021-06-03 19:03 UTC (permalink / raw
To: gentoo-user
Toldi Balázs wrote:
> Hello!
>
> In my current PC I have 16 GB of RAM installed. It worked fine until
> today, when I upgraded my CPU from a Ryzen 5 1500X to a Ryzen 7 2700.
> The system boots up just fine, but when I use the free command the
> total memory is only 8 GB. When I looked into the BIOS, it showed me
> the correct amount. What should I do?
>
> Output of some relevant commands:
>
> free -h
>
> total used free shared buff/cache
> available
> Mem: 7,8Gi 4,4Gi 874Mi 192Mi 2,5Gi
> 3,1Gi
>
> cat /proc/meminfo
>
> MemTotal: 8158220 kB
> MemFree: 910036 kB
> MemAvailable: 3275008 kB
> Buffers: 2848 kB
> Cached: 2492392 kB
> SwapCached: 260 kB
> Active: 1622988 kB
> Inactive: 4198676 kB
> Active(anon): 9500 kB
> Inactive(anon): 3507660 kB
> Active(file): 1613488 kB
> Inactive(file): 691016 kB
> Unevictable: 64 kB
> Mlocked: 64 kB
> SwapTotal: 16777212 kB
> SwapFree: 16775140 kB
> Dirty: 732 kB
> Writeback: 0 kB
> AnonPages: 3326444 kB
> Mapped: 1322720 kB
> Shmem: 193816 kB
> KReclaimable: 160248 kB
> Slab: 556240 kB
> SReclaimable: 160248 kB
> SUnreclaim: 395992 kB
> KernelStack: 32704 kB
> PageTables: 58964 kB
> NFS_Unstable: 0 kB
> Bounce: 0 kB
> WritebackTmp: 0 kB
> CommitLimit: 20856320 kB
> Committed_AS: 15151980 kB
> VmallocTotal: 34359738367 kB
> VmallocUsed: 260776 kB
> VmallocChunk: 0 kB
> Percpu: 10944 kB
> HugePages_Total: 0
> HugePages_Free: 0
> HugePages_Rsvd: 0
> HugePages_Surp: 0
> Hugepagesize: 2048 kB
> Hugetlb: 0 kB
> DirectMap4k: 1638688 kB
> DirectMap2M: 6699008 kB
> DirectMap1G: 1048576 kB
>
>
> lshw -C memory
>
> *-memory
> description: System Memory
> physical id: 27
> slot: System board or motherboard
> size: 7967MiB
> *-bank:0
> description: [empty]
> product: Unknown
> vendor: Unknown
> physical id: 0
> serial: Unknown
> slot: DIMM 0
> *-bank:1
> description: DIMM DDR4 Synchronous Unbuffered (Unregistered)
> 2400 MHz (0,4 ns) [empty]
> product: 9905702-120.A00G
> vendor: Kingston
> physical id: 1
> serial: EE963485
> slot: DIMM 1
> width: 64 bits
> clock: 2400MHz (0.4ns)
> *-bank:2
> description: [empty]
> product: Unknown
> vendor: Unknown
> physical id: 2
> serial: Unknown
> slot: DIMM 0
> *-bank:3
> description: DIMM DDR4 Synchronous Unbuffered (Unregistered)
> 2400 MHz (0,4 ns) [empty]
> product: Unknown
> vendor: Unknown
> physical id: 3
> serial: 08240800
> slot: DIMM 1
> width: 64 bits
> clock: 2400MHz (0.4ns)
>
>
> uname -a
>
> Linux GlaDOS 5.10.27-gentoo #4 SMP Thu Jun 3 18:19:23 CEST 2021 x86_64
> AMD Ryzen 7 2700 Eight-Core Processor AuthenticAMD GNU/Linux
>
>
>
>
Could this be a kernel setting issue? If you boot some other media like
a USB stick, DVD/CD or something, does it show the right amount then?
If it does, could be a kernel setting. If not, interesting problem.
If the BIOS sees it, I doubt it is a hardware issue. It may not rule it
out 100% but not likely.
It's amazing that things like this still occur when large amounts of
memory has been around for a good while now.
Hope that helps?
Dale
:-) :-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [gentoo-user] Less available memory than installed
2021-06-03 17:16 [gentoo-user] Less available memory than installed Toldi Balázs
2021-06-03 18:59 ` Wols Lists
2021-06-03 19:03 ` Dale
@ 2021-06-03 19:09 ` thelma
2021-06-03 20:20 ` [SOLVED] " Toldi Balázs
3 siblings, 0 replies; 6+ messages in thread
From: thelma @ 2021-06-03 19:09 UTC (permalink / raw
To: gentoo-user
On 6/3/21 11:16 AM, Toldi Balázs wrote:
> Hello!
>
> In my current PC I have 16 GB of RAM installed. It worked fine until today, when I upgraded my CPU from a Ryzen 5 1500X to a Ryzen 7 2700. The system boots up just fine, but when I use the free command the total memory is only 8 GB. When I looked into the BIOS, it showed me the correct amount. What should I do?
>
> Output of some relevant commands:
>
> free -h
>
> total used free shared buff/cache available
> Mem: 7,8Gi 4,4Gi 874Mi 192Mi 2,5Gi 3,1Gi
>
> cat /proc/meminfo
>
> MemTotal: 8158220 kB
> MemFree: 910036 kB
> MemAvailable: 3275008 kB
[snip]
boot from min-install Getnoo disk and check what is it showing/reporting.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [SOLVED] [gentoo-user] Less available memory than installed
2021-06-03 17:16 [gentoo-user] Less available memory than installed Toldi Balázs
` (2 preceding siblings ...)
2021-06-03 19:09 ` thelma
@ 2021-06-03 20:20 ` Toldi Balázs
2021-06-03 21:06 ` Wols Lists
3 siblings, 1 reply; 6+ messages in thread
From: Toldi Balázs @ 2021-06-03 20:20 UTC (permalink / raw
To: gentoo-user
I tried booting from Minimal install disk. It had the same problem.
Then I tried pulling the two ram sticks out and put them back. It seems
like this fixed my issue (Although I don't really know what caused it in
the first place).
Thanks for everyone's suggestions :)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [SOLVED] [gentoo-user] Less available memory than installed
2021-06-03 20:20 ` [SOLVED] " Toldi Balázs
@ 2021-06-03 21:06 ` Wols Lists
0 siblings, 0 replies; 6+ messages in thread
From: Wols Lists @ 2021-06-03 21:06 UTC (permalink / raw
To: gentoo-user
On 03/06/21 21:20, Toldi Balázs wrote:
> I tried booting from Minimal install disk. It had the same problem.
>
> Then I tried pulling the two ram sticks out and put them back. It seems
> like this fixed my issue (Although I don't really know what caused it in
> the first place).
>
Could it be that the 7 has a higher clock speed than the 5? Maybe one
stick was badly seated (seems like it) and something like that could
easily cause it to "disappear".
> Thanks for everyone's suggestions :)
>
Cheers,
Wol
^ permalink raw reply [flat|nested] 6+ messages in thread
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2021-06-03 17:16 [gentoo-user] Less available memory than installed Toldi Balázs
2021-06-03 18:59 ` Wols Lists
2021-06-03 19:03 ` Dale
2021-06-03 19:09 ` thelma
2021-06-03 20:20 ` [SOLVED] " Toldi Balázs
2021-06-03 21:06 ` Wols Lists
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