memory latency for ddr5 modules

Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

hi there,

i want a simple memory latency output.

i found information regarding "decode-dimms" which should do what i want. but decode dimms complains about missing a modul :

"# decode-dimms
No EEPROM found, try loading the eeprom, at24 or ee1004 module"

i did have a look in my kernel config but could not find any module /eeprom.. any ideas ?

ryzen9-7950x with asrock 620 pro rs mainboard.

thanks !
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pietinger · Posted: Sun Apr 21, 2024 3:17 pm Post subject:

Have a look here:

Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

thanks, i got further...

modprobe eeprom still prints

pietinger · Posted: Mon Apr 22, 2024 4:31 pm Post subject:

Maybe you will need a working i2c and smbus (i2c needs pinctrl) ... have a look in chapter 2 of: https://wiki.gentoo.org/wiki/User:Pietinger/Tutorials/Manual_Configuring_Kernel_Version_6.6

Maybe this can help also: https://forums.unraid.net/topic/96986-i2c-tools-decode-dimms-get-memory-timings-from-cli-solved/

(as far as I know EE1004 supports only ddr4)

(Maybe you will need also package i2c-tools)
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Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

I still dont know howto show my ddr5 memory latency.

I got i2c-tools but "decode-dimms" reports :

NeddySeagoon · Posted: Wed Jun 26, 2024 2:24 pm Post subject:

Mgiese,

What does

Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

# uname -a
Linux cori 6.9.3-gentoo #3 SMP PREEMPT_DYNAMIC Tue Jun 25 15:38:08 CEST 2024 x86_64 AMD Ryzen 9 7950X 16-Core Processor AuthenticAMD GNU/Linux

thats not the issue

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NeddySeagoon · Posted: Wed Jun 26, 2024 3:06 pm Post subject:

Mgiese,

So far, so good.

/usr/src/linux is a symbolic link. What does it point to?
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Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

your trust in me is unrivaled

/usr/src/linux points to linux-6.9.3-gentoo
_________________
I do not have a Superman complex, for I am God not Superman

Ryzen9 7950x (powersave governor) ; Geforce 3050 (70w) ; kernel 6.10.6 ; XFCE

pietinger · Posted: Wed Jun 26, 2024 6:56 pm Post subject:

Mgiese,

TBH I dont know a module EEPROM of the kernel ... Yes, I have searched for it - I only found: at24, at25 and ee1004 (and some unimportant) ... Maybe the errror message is misleading (and means "one of the eeprom modules is missing") ... OR ... there used to be a module called EEPROM in an old kernel version ?

Have you really all 3 enabled (at25 you will get only if you have enabled SPI):

Mgiese · Veteran Joined: 23 Mar 2005 Posts: 1628 Location: indiana

I enabled all modules as "in kernel" in