Did the limits for RAM on Home edition get changed with SFOS 16.05.2 MR2? I'm only seeing 4GB after update. Still only showing 4GB after rolling back to SFOS 16.05.1 MR-1. I was seeing 6GB usable before upgrade.
Hi All,
We are investigating the issue, please be sure, we are gathering as much information to provide a better RCA on this matter. Can we get the output of the following two commands:
dmidecode -t memory
Alongside, the users who saw 8 GB RAM utilization for the Home editions was a defect in the initial implementation due to which the SFOS, used to scale up to full available capacity. The defect (NC- 16008) got resolved recently.
Thanks
SFVH_SO01_SFOS 16.05.2 MR-2# cat /proc/meminfo | grep -i memtotalMemTotal: 3954008 kBSFVH_SO01_SFOS 16.05.2 MR-2# free total used free shared buffersMem: 3954008 3624944 329064 0 284132-/+ buffers: 3340812 613196Swap: 1976476 4456 1972020
I'm not expecting to use 8G but instead 6G. The mem=6G fix which i assume is part of NC-16008 is incompatible with some configurations resulting in the loss of 2 or more GB of memory beyond what would be expected when the system has 8GB of memory. Even if i had a 4GB and 2GB dimm there's no guarantee i would see any more memory than i do now.
I took the memory map that was logged during boot and determined that the available memory shown is 6GB minus all the reserved areas. If you add up the usable memory range values in the log below it is 4101809K which is very close to the available boot memory below.
Memory: 3952648K/4101804K available (5864K kernel code, 812K rwdata, 2152K rodata, 1336K init, 564K bss, 149156K reserved
Reserved memory appears to be the culprit and the mem=6G just drops all memory over 6G not taking into account reserved memory deductions. I do not know if this is fixed in newer kernels or if it's a known issue.
memory map for syslog.log after the memory over 6G is removed(e820: remove).
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] Original command line: auto BOOT_IMAGE=16_05_2160 console=tty0 console=ttyS0,38400n8 quiet maxcpus=4 mem=6G ZD=80 SM=
Mar 17 22:21:48 (none) user.debug kernel: [ 0.000000] e820: remove [mem 0x180000000-0xfffffffffffffffe] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] NX (Execute Disable) protection: active
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] e820: user-defined physical RAM map:
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x0000000000000000-0x000000000009c7ff] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000000009c800-0x000000000009ffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000000e0000-0x00000000000fffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x0000000000100000-0x000000001effffff] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000001f000000-0x00000000201fffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x0000000020200000-0x000000007b217fff] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000007b218000-0x000000007b292fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000007b293000-0x000000007b3bafff] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000007b3bb000-0x000000007b81ffff] ACPI NVS
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000007b820000-0x000000007bb2ffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x000000007bb30000-0x000000007bffffff] usable
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000e0000000-0x00000000efffffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fea00000-0x00000000feafffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed01000-0x00000000fed01fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed03000-0x00000000fed03fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed06000-0x00000000fed06fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed08000-0x00000000fed09fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed1c000-0x00000000fed1cfff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fed80000-0x00000000fedbffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000fee00000-0x00000000fee00fff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x00000000ffb00000-0x00000000ffffffff] reserved
Mar 17 22:21:48 (none) user.info kernel: [ 0.000000] user: [mem 0x0000000100000000-0x000000017fffffff] usable
found a script online that adds up the memory regions in /proc/iomem
ALL MEMORY REGIONS, Just shy of 6GB
Total Bytes: 6420106218
Excluding System RAM: (grep -v RAM added in for loop) - This is the memory i'm missing with mem=6G
Total Bytes: 2219856880
System Ram: (grep RAM added in for loop) - The usable memory i have in the system as it is now with mem=6G
Total Bytes: 4200249338
Here's the version that worked in sophos xg shell. i had to modify from the original
for i in `cat /proc/iomem | egrep "^[^\s]" | awk '{ print $1}' | sort | uniq`
do
startAddr=$(echo $i | awk -F "-" '{print $1}') && endAddr=$(echo $i | awk -F "-" '{print $2}');
bytes=$((0x$endAddr-0x$startAddr))
sum=$((sum+=$bytes))
done
echo "Total Bytes:" $sum
Hi Kevin,
Can you please post me the output by executing the below command:
dmidecode -t memory
This will verify the installed RAM on each memory slot.
Thanks
Hi Kevin,
Can you please post me the output by executing the below command:
dmidecode -t memory
This will verify the installed RAM on each memory slot.
Thanks
Here is the information. There is 8G of memory in the system. It has been verified compatible on the crucial website.
SFVH_SO01_SFOS 16.05.2 MR-2# dmidecode -t memory
# dmidecode 2.12
SMBIOS 3.0 present.
# SMBIOS implementations newer than version 2.7 are not
# fully supported by this version of dmidecode.
Handle 0x0028, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x002A, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0028
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM0
Bank Locator: A1_BANK0
Type: DDR3
Type Detail: Unknown
Speed: 1600 MHz
Manufacturer: Crucial
Serial Number: E05BEFD7
Asset Tag: A1_AssetTagNum0
Part Number: CT51264BF160B.C16F
Rank: 2
Configured Clock Speed: 1600 MHz
Minimum voltage: 1.350 V
Maximum voltage: 1.500 V
Configured voltage: 1.350 V
Handle 0x002C, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x0028
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: A1_DIMM1
Bank Locator: A1_BANK1
Type: DDR3
Type Detail: Unknown
Speed: 1600 MHz
Manufacturer: Crucial
Serial Number: E05BEFD8
Asset Tag: A1_AssetTagNum1
Part Number: CT51264BF160B.C16F
Rank: 2
Configured Clock Speed: 1600 MHz
Minimum voltage: 1.350 V
Maximum voltage: 1.500 V
Configured voltage: 1.350 V
