How can I find which memory have CE error?
In /var/log/kern.log
:
kernel: [13291329.657499] EDAC MC0: 48 CE error on CPU#0Channel#2_DIMM#0 (channel:2 slot:0 page:0x0 offset:0x0 grain:8 syndrome:0x0)
This is edac
log, one of the memory have ce
error.
I have read edac doc
Dual channels allows for 128 bit data transfers to the CPU from memory.
Some newer chipsets allow for more than 2 channels, like Fully Buffered DIMMs
(FB-DIMMs). The following example will assume 2 channels:
Channel 0 Channel 1
===================================
csrow0 | DIMM_A0 | DIMM_B0 |
csrow1 | DIMM_A0 | DIMM_B0 |
===================================
===================================
csrow2 | DIMM_A1 | DIMM_B1 |
csrow3 | DIMM_A1 | DIMM_B1 |
===================================
and find the error channel:
$ grep "[0-9]" /sys/devices/system/edac/mc/mc*/csrow*/ch*_ce_count
/sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch1_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch2_ce_count:144648966
/sys/devices/system/edac/mc/mc0/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow0/ch1_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow0/ch2_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow1/ch1_ce_count:0
and it should be mc0/csrow0/ch2
, as the doc, the DIMM should be DIMM_C0
, and can be found by dmidecode
:
But I can't find this DIMM, so I don't know which memory have problem:
$ dmidecode -t memory | grep 'Locator: PROC'
Locator: PROC 1 DIMM 2A
Locator: PROC 1 DIMM 1D
Locator: PROC 1 DIMM 4B
Locator: PROC 1 DIMM 3E
Locator: PROC 1 DIMM 6C
Locator: PROC 1 DIMM 5F
Locator: PROC 2 DIMM 2A
Locator: PROC 2 DIMM 1D
Locator: PROC 2 DIMM 4B
Locator: PROC 2 DIMM 3E
Locator: PROC 2 DIMM 6C
Locator: PROC 2 DIMM 5F
There are 12 slots, and 9 slots have memory.
So how can I know which memory have problem?
Supplement:
System Information
Manufacturer: HP
Product Name: ProLiant DL180 G6
Your problem DIMM is likely - Locator: PROC 1 DIMM 5F
CPU#0Channel#2_DIMM#0 means:
PROC 1,
1D,2A = Channel 0
3E,4B = Channel 1
5F,6C = Channel 2
5F = DIMM 0
6C = DIMM 1
Edit:
When asking questions, more information is always better... Having the server manufacturer and model would have simplified this:
Here's the memory diagram from the HP ProLiant DL180 G6 Quickspecs:
My suggestion that the DIMM in CPU slot #1 is correct... But this is HP hardware. You shouldn't need to guess!!
You should be using HP's management agents, since they can alert and provide platform-specific details about hardware health and status...
[root@veloce ~]# hpasmcli
HP management CLI for Linux (v2.0)
Copyright 2008 Hewlett-Packard Development Group, L.P.
--------------------------------------------------------------------------
This server ProLiant DL180 G6 , is a Proliant 100 Series Server.
NOTE: Some hpasmcli commands may not be supported on 100 series servers.
Type 'help' to get a list of all top level commands.
--------------------------------------------------------------------------
hpasmcli> show dimm
Cartridge #: 0
Processor #: 1
Module #: 2
Present: Yes
Form Factor: fh
Memory Type: 5h
Size: 4096 MB
Speed: 1333 MHz
Status: N/A
Cartridge #: 0
Processor #: 1
Module #: 1
Present: Yes
Form Factor: fh
Memory Type: 5h
Size: 4096 MB
Speed: 1333 MHz
Status: N/A
Cartridge #: 0
Processor #: 1
Module #: 4
Present: Yes
Form Factor: fh
Memory Type: 5h
Size: 4096 MB
Speed: 1333 MHz
Status: N/A
Cartridge #: 0
Processor #: 1
Module #: 6
Present: Yes
Form Factor: fh
Memory Type: 5h
Size: 4096 MB
Speed: 1333 MHz
Status: N/A