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#1 2024-01-20 15:14:30

Samueru
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Registered: 2023-07-03
Posts: 29

Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

I noticed this after an update, I tested going to the lts kernel (6.6) and the ram usage went back down, here are two screenshots comparing the two:


6.7
https://i.imgur.com/Ci7y11X.png

LTS
https://i.imgur.com/RtMZY5l.png


Looking at the processes the only difference I can see is that each task now uses more ram in 6.7. What changed?

Last edited by Samueru (2024-01-21 00:38:12)

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#2 2024-01-20 20:31:02

cgb_spender
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Registered: 2024-01-15
Posts: 48
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Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

Not to worry, I know that Arch developers dislike it when RAM is unused.

Only one thing is certain: nothing is certain.

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#3 2024-01-20 22:11:28

Head_on_a_Stick
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From: The Wirral
Registered: 2014-02-20
Posts: 8,560
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Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

Samueru wrote:

What changed?

Newer kernels offer more features and those features will probably use more memory.

FWIW I like to use https://github.com/pixelb/ps_mem/ to analyse memory usage in detail.

And please replace those oversized images with URLs or thumbnail links. Or post the output of `free -h` or the content of /proc/meminfo instead, both will be more useful than screenshots of `htop`.

Jin, Jiyan, Azadî

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#4 2024-01-21 00:37:26

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

Head_on_a_Stick wrote:
Samueru wrote:

What changed?

Newer kernels offer more features and those features will probably use more memory.

FWIW I like to use https://github.com/pixelb/ps_mem/ to analyse memory usage in detail.

And please replace those oversized images with URLs or thumbnail links. Or post the output of `free -h` or the content of /proc/meminfo instead, both will be more useful than screenshots of `htop`.

I used htop becasue not long ago there were changes to procps-ng that affects free that result in higher ram usage values than before, it was just that the calculation changed, nothing else changed so I wanted to avoid someone explaining that it is normal because of procps-ng had I used free -h instead of htop

EIther way here is the output of ps_mem and free -h on lts and 6.7:

6.7.arch3-1

ps_mem

 Private  +   Shared  =  RAM used	Program

240.0 KiB +  89.5 KiB = 329.5 KiB	xinit
272.0 KiB +  69.5 KiB = 341.5 KiB	dbus-run-session
444.0 KiB + 415.5 KiB = 859.5 KiB	sh
  1.1 MiB + 174.5 KiB =   1.2 MiB	dbus-broker-launch
  1.3 MiB +  58.5 KiB =   1.3 MiB	dbus-broker
968.0 KiB + 481.5 KiB =   1.4 MiB	startx
  1.0 MiB + 545.5 KiB =   1.5 MiB	systemd-hostnamed
  1.1 MiB + 645.0 KiB =   1.8 MiB	dbus-daemon (2)
  1.3 MiB + 548.5 KiB =   1.8 MiB	login
  1.8 MiB + 139.5 KiB =   1.9 MiB	(sd-pam)
  1.5 MiB + 474.5 KiB =   1.9 MiB	picom
  1.4 MiB + 643.5 KiB =   2.1 MiB	systemd-logind
812.0 KiB +   1.7 MiB =   2.5 MiB	systemd-udevd
  2.1 MiB + 555.5 KiB =   2.6 MiB	systemd-journald
768.0 KiB +   2.6 MiB =   3.4 MiB	udevadm (2)
  1.1 MiB +   2.4 MiB =   3.5 MiB	sudo (2)
  3.0 MiB + 887.5 KiB =   3.9 MiB	systemd-timesyncd
  3.7 MiB +   1.3 MiB =   5.0 MiB	zsh (2)
  6.1 MiB + 787.5 KiB =   6.9 MiB	pipewire-pulse
  7.0 MiB + 427.5 KiB =   7.4 MiB	at-spi2-registryd
  8.5 MiB + 258.5 KiB =   8.8 MiB	xss-lock
  8.6 MiB + 265.5 KiB =   8.9 MiB	xfconfd
  8.5 MiB + 520.5 KiB =   9.0 MiB	polkitd
  5.5 MiB +   4.0 MiB =   9.5 MiB	systemd (2)
  9.7 MiB + 706.5 KiB =  10.4 MiB	dunst
 10.2 MiB + 652.5 KiB =  10.8 MiB	gvfsd
 11.1 MiB + 408.5 KiB =  11.5 MiB	at-spi-bus-launcher
 10.6 MiB +   1.5 MiB =  12.1 MiB	pipewire
 13.0 MiB + 374.5 KiB =  13.3 MiB	gvfsd-fuse
 16.7 MiB +   2.4 MiB =  19.1 MiB	NetworkManager
 21.5 MiB +   1.9 MiB =  23.4 MiB	i3
 25.5 MiB +   5.2 MiB =  30.7 MiB	xfce4-terminal
 19.5 MiB +  11.8 MiB =  31.3 MiB	kdeconnectd
 22.8 MiB +  11.1 MiB =  33.9 MiB	kdeconnect-indicator
 31.3 MiB +   3.1 MiB =  34.4 MiB	wireplumber
 30.7 MiB +  16.2 MiB =  46.9 MiB	xfce-polkit
 33.3 MiB +  17.2 MiB =  50.5 MiB	xfce4-clipman
 47.0 MiB +   7.9 MiB =  54.9 MiB	polybar (3)
 84.3 MiB +  14.9 MiB =  99.2 MiB	Xorg
---------------------------------
                        570.2 MiB
=================================

free -h
               total        used        free      shared  buff/cache   available
Mem:           1.8Gi       958Mi       510Mi        20Mi       620Mi       887Mi
Swap:          5.4Gi          0B       5.4Gi

LTS: 

~/ sudo ps_mem
[sudo] password for samuel: 
 Private  +   Shared  =  RAM used	Program

240.0 KiB +  91.5 KiB = 331.5 KiB	xinit
272.0 KiB +  73.5 KiB = 345.5 KiB	dbus-run-session
444.0 KiB + 417.5 KiB = 861.5 KiB	sh
  1.0 MiB + 180.5 KiB =   1.2 MiB	dbus-broker-launch
  1.3 MiB +  59.5 KiB =   1.3 MiB	dbus-broker
968.0 KiB + 483.5 KiB =   1.4 MiB	startx
  1.0 MiB + 417.5 KiB =   1.4 MiB	at-spi2-registryd
  1.0 MiB + 544.5 KiB =   1.5 MiB	systemd-hostnamed
  1.2 MiB + 415.5 KiB =   1.6 MiB	at-spi-bus-launcher
  1.2 MiB + 635.0 KiB =   1.8 MiB	dbus-daemon (2)
  1.3 MiB + 544.5 KiB =   1.8 MiB	login
  1.8 MiB + 139.5 KiB =   1.9 MiB	(sd-pam)
  1.5 MiB + 472.5 KiB =   1.9 MiB	picom
  1.1 MiB + 896.5 KiB =   1.9 MiB	systemd-timesyncd
  1.4 MiB + 647.5 KiB =   2.1 MiB	systemd-logind
  2.0 MiB + 555.5 KiB =   2.6 MiB	systemd-journald
908.0 KiB +   1.7 MiB =   2.6 MiB	systemd-udevd
  2.6 MiB + 261.5 KiB =   2.8 MiB	xss-lock
  2.6 MiB + 265.5 KiB =   2.9 MiB	xfconfd
  2.1 MiB + 790.5 KiB =   2.9 MiB	pipewire-pulse
  2.5 MiB + 526.5 KiB =   3.0 MiB	polkitd
  1.2 MiB +   2.3 MiB =   3.5 MiB	sudo (2)
856.0 KiB +   2.8 MiB =   3.6 MiB	udevadm (2)
  4.2 MiB + 654.5 KiB =   4.8 MiB	gvfsd
  3.7 MiB +   1.3 MiB =   5.0 MiB	zsh (2)
  5.0 MiB + 369.5 KiB =   5.3 MiB	gvfsd-fuse
  4.6 MiB +   1.4 MiB =   6.0 MiB	pipewire
  5.7 MiB + 722.5 KiB =   6.4 MiB	dunst
  5.4 MiB +   4.0 MiB =   9.4 MiB	systemd (2)
 10.7 MiB +   2.4 MiB =  13.0 MiB	NetworkManager
 19.5 MiB +   3.0 MiB =  22.5 MiB	wireplumber
 21.6 MiB +   1.8 MiB =  23.3 MiB	i3
 19.5 MiB +   5.2 MiB =  24.7 MiB	xfce4-terminal
 19.1 MiB +   7.9 MiB =  27.0 MiB	polybar (3)
 15.3 MiB +  11.9 MiB =  27.2 MiB	kdeconnectd
 18.8 MiB +  11.2 MiB =  30.0 MiB	kdeconnect-indicator
 14.7 MiB +  16.2 MiB =  31.0 MiB	xfce-polkit
 19.3 MiB +  17.3 MiB =  36.6 MiB	xfce4-clipman
 66.5 MiB +  15.0 MiB =  81.5 MiB	Xorg
---------------------------------
                        399.1 MiB
=================================
~/ free -h
               total        used        free      shared  buff/cache   available
Mem:           1.8Gi       755Mi       713Mi        20Mi       620Mi       1.1Gi
Swap:          5.4Gi          0B       5.4Gi

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#5 2024-01-21 08:24:04

loqs
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Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

https://gitlab.archlinux.org/archlinux/ … ote_157925 have you tried building 6.7 with  6.6's config?  If the issue is not due to a change in the config you may need to bisect the kernel to identify the cause.

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#6 2024-01-21 12:03:28

agapito
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From: Who cares.
Registered: 2008-11-13
Posts: 679

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

I would not say that this is a problem of the 6.7 kernel exclusively. This is a fact that has been observed in recent years: the kernel and programs consume more and more memory, without knowing exactly the reason or the benefits of it.

Having, for example, 16 GB of RAM in 2024 is not the same as having it in 2017. You can do less things now than before.

You can see for yourself: the latest Arch installation ISO, needs at least 784 MB of memory to be able to be launched correctly in VirtualBox. The April 2017 ISO (the first non-dual one) can be booted in VirtualBox with only 364 MB, that's less than half.

I think that in the optimization aspect, Linux and its ecosystem leaves much to be desired compared to the past.

Excuse my poor English.

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#7 2024-01-21 13:17:10

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:

https://gitlab.archlinux.org/archlinux/ … ote_157925 have you tried building 6.7 with  6.6's config?  If the issue is not due to a change in the config you may need to bisect the kernel to identify the cause.

Oh that's my man Gaël, nice to see that he also noticed the issue as well. And yes it is true that it gets worse the more you use the PC, I was doing the regular stuff like using telegram and the web browser and noticed that my ram usage was above 5 GIB when it would use to be under 3 GiB for those tasks and began troubleshooting.

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#8 2024-01-21 14:20:13

seth
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Registered: 2012-09-03
Posts: 60,147

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

The biggest difference seems to be in GTK stuff, but eg. zsh and i3 are idem and xinit, sh and dbus-run-session even leaned down a bit.
Also this is not exactly the same as RAM demand creeping up over time.

Check 

cat /proc/meminfo

after "losing" RAM, then isolate the rescue.target (that will kill all GUI, save volatile data before!) and re-check the meminfo.
Then allocate a lot of RAM

head -c 1500m /dev/zero | tail

and see what impact that has on the status quo.

Finally you can also try to allocate memory and see whether that takes more RAM on 6.7 or 6.6

cat <(head -c 500m /dev/zero) <(sleep 120) | tail

will hold 500MB for 2 minutes (if you need more time to draw the data, sleep longer)
You should also run this on the rescue.target to avoid interference from your DE

Do you have an AMD GPU?

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#9 2024-01-21 15:24:29

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:

have you tried building 6.7 with  6.6's config?

https://drive.google.com/file/d/1B_BF7D … sp=sharing linux-6.7.arch3-1.2-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1VSiOG5 … sp=sharing linux-headers-6.7.arch3-1.2-x86_64.pkg.tar.zst
If the config is not the cause please try the first kernel from https://bbs.archlinux.org/viewtopic.php … 8#p2139898 if that has the issue please also try the second.

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#10 2024-01-21 18:12:38

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

seth wrote:

The biggest difference seems to be in GTK stuff, but eg. zsh and i3 are idem and xinit, sh and dbus-run-session even leaned down a bit.
Also this is not exactly the same as RAM demand creeping up over time.

Check 

cat /proc/meminfo

after "losing" RAM, then isolate the rescue.target (that will kill all GUI, save volatile data before!) and re-check the meminfo.
Then allocate a lot of RAM

head -c 1500m /dev/zero | tail

and see what impact that has on the status quo.

Finally you can also try to allocate memory and see whether that takes more RAM on 6.7 or 6.6

cat <(head -c 500m /dev/zero) <(sleep 120) | tail

will hold 500MB for 2 minutes (if you need more time to draw the data, sleep longer)
You should also run this on the rescue.target to avoid interference from your DE

Do you have an AMD GPU?

Sorry I did not understand what you meant by isolating rescue.target and kill all GUI. Worth mentioning that I can log into tty since I use startx, I will compare the ram usage logging into tty2 which doesn't start the graphical session.

Other stuff like polybar and dunst doubled their ram usage, networkmanager and wireplumber also increased considerably for no apparent reason, and it looks like ps_mem doesn't take into account the usage of the kernel which by the looks of what htop and free -h report is also higher.

Yes I have an AMD GPU. RX 580 which also kernel 6.6 broke its power reporting as well.


loqs wrote:
loqs wrote:

have you tried building 6.7 with  6.6's config?

https://drive.google.com/file/d/1B_BF7D … sp=sharing linux-6.7.arch3-1.2-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1VSiOG5 … sp=sharing linux-headers-6.7.arch3-1.2-x86_64.pkg.tar.zst
If the config is not the cause please try the first kernel from https://bbs.archlinux.org/viewtopic.php … 8#p2139898 if that has the issue please also try the second.

Installed that kernel, nothing changed, however I did not install linux-headers, do I need them? My system doesn't have that package installed.

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#11 2024-01-21 18:25:03

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:
loqs wrote:

have you tried building 6.7 with  6.6's config?

https://drive.google.com/file/d/1B_BF7D … sp=sharing linux-6.7.arch3-1.2-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1VSiOG5 … sp=sharing linux-headers-6.7.arch3-1.2-x86_64.pkg.tar.zst
If the config is not the cause please try the first kernel from https://bbs.archlinux.org/viewtopic.php … 8#p2139898 if that has the issue please also try the second.

I tried the linux-mainline-6.7rc1-1-x86_64.pkg.tar.zst kernel and IT FIXED IT!

 Private  +   Shared  =  RAM used	Program

240.0 KiB +  88.5 KiB = 328.5 KiB	xinit
272.0 KiB +  75.5 KiB = 347.5 KiB	dbus-run-session
428.0 KiB + 369.5 KiB = 797.5 KiB	sh
  1.0 MiB + 178.5 KiB =   1.2 MiB	dbus-broker-launch
  1.2 MiB +  63.5 KiB =   1.3 MiB	dbus-broker
912.0 KiB + 438.5 KiB =   1.3 MiB	startx
  1.0 MiB + 420.5 KiB =   1.4 MiB	at-spi2-registryd
  1.1 MiB + 394.5 KiB =   1.5 MiB	at-spi-bus-launcher
  1.2 MiB + 632.0 KiB =   1.8 MiB	dbus-daemon (2)
  1.3 MiB + 539.5 KiB =   1.8 MiB	login
  1.4 MiB + 503.5 KiB =   1.9 MiB	picom
  1.8 MiB + 146.5 KiB =   1.9 MiB	(sd-pam)
  1.4 MiB + 746.5 KiB =   2.2 MiB	systemd-logind
  2.0 MiB + 631.5 KiB =   2.6 MiB	systemd-journald
936.0 KiB +   1.8 MiB =   2.7 MiB	systemd-udevd
  2.1 MiB + 780.5 KiB =   2.9 MiB	pipewire-pulse
  2.6 MiB + 267.5 KiB =   2.9 MiB	xfconfd
  1.1 MiB +   2.1 MiB =   3.2 MiB	sudo (2)
  3.0 MiB + 368.5 KiB =   3.3 MiB	gvfsd-fuse
880.0 KiB +   2.7 MiB =   3.6 MiB	udevadm (2)
  3.0 MiB + 970.5 KiB =   4.0 MiB	systemd-timesyncd
  3.7 MiB + 685.5 KiB =   4.4 MiB	dunst
  4.2 MiB + 489.5 KiB =   4.7 MiB	gvfsd
  4.5 MiB + 278.5 KiB =   4.8 MiB	xss-lock
  3.7 MiB +   1.3 MiB =   5.0 MiB	zsh (2)
  4.6 MiB + 509.5 KiB =   5.1 MiB	polkitd
  4.6 MiB +   1.4 MiB =   6.0 MiB	pipewire
  5.3 MiB +   4.0 MiB =   9.3 MiB	systemd (2)
 12.5 MiB +   2.5 MiB =  15.0 MiB	NetworkManager
 18.3 MiB +   3.4 MiB =  21.7 MiB	wireplumber
 21.5 MiB +   1.6 MiB =  23.1 MiB	i3
 19.2 MiB +   5.3 MiB =  24.5 MiB	xfce4-terminal
 19.0 MiB +   6.9 MiB =  25.9 MiB	polybar (3)
 15.4 MiB +  11.9 MiB =  27.2 MiB	kdeconnectd
 18.9 MiB +  11.1 MiB =  30.1 MiB	kdeconnect-indicator
 16.7 MiB +  16.3 MiB =  33.0 MiB	xfce-polkit
 19.3 MiB +  17.2 MiB =  36.5 MiB	xfce4-clipman
 65.6 MiB +  15.0 MiB =  80.6 MiB	Xorg
---------------------------------
                        399.9 MiB
=================================

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#12 2024-01-21 19:18:54

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

If linux-mainline-6.7rc1-1-x86_64.pkg.tar.zst fixed it.  Did linux-6.7.arch3-1.2-x86_64.pkg.tar.zst have the issue?  If so please try the following kernel which is 6.7 without Arch's patches still with the config from 6.6:

https://drive.google.com/file/d/1WLHHc7 … sp=sharing linux-6.7.arch3-1.3-x86_64.pkg.tar.zst
https://drive.google.com/file/d/10Qx4sX … sp=sharing linux-headers-6.7.arch3-1.3-x86_64.pkg.tar.zst

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#13 2024-01-21 19:31:35

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:

If linux-mainline-6.7rc1-1-x86_64.pkg.tar.zst fixed it.  Did linux-6.7.arch3-1.2-x86_64.pkg.tar.zst have the issue?  If so please try the following kernel which is 6.7 without Arch's patches still with the config from 6.6:

https://drive.google.com/file/d/1WLHHc7 … sp=sharing linux-6.7.arch3-1.3-x86_64.pkg.tar.zst
https://drive.google.com/file/d/10Qx4sX … sp=sharing linux-headers-6.7.arch3-1.3-x86_64.pkg.tar.zst

Yes linux-6.7.arch3-1.2-x86_64.pkg.tar.zst had the issue, I said that in the message before trying the 6.7rc kernel sorry that I splited it into two replies.


Just booted into linux-6.7.arch3-1.3-x86_64.pkg.tar.zst the issue is back.

Last edited by Samueru (2024-01-21 19:35:01)

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#14 2024-01-21 20:29:39

seth
Member
Registered: 2012-09-03
Posts: 60,147

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

Ftr, 2nd link below.
Basically "systemctl isolate rescue.target", but typing that into some xfce terminal will immediately kill the GUI session.

There's an increasing pattern w/ AMDGPU itr, basicallly the RAM usage creeps up in likely GART/GTT (maybe it's now assigned to clients?) and is apparently only reclaimable in the rescue (perhaps multi-user?) target: https://bbs.archlinux.org/viewtopic.php … 6#p2144656
Ftr, polybar uses cairo, what gets it close to "gtk stuff" (itr)

But loqs is probably also already compiling bisection kernels, just can't help it wink

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#15 2024-01-21 21:43:00

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

seth wrote:

Ftr, 2nd link below.
Basically "systemctl isolate rescue.target", but typing that into some xfce terminal will immediately kill the GUI session.

There's an increasing pattern w/ AMDGPU itr, basicallly the RAM usage creeps up in likely GART/GTT (maybe it's now assigned to clients?) and is apparently only reclaimable in the rescue (perhaps multi-user?) target: https://bbs.archlinux.org/viewtopic.php … 6#p2144656
Ftr, polybar uses cairo, what gets it close to "gtk stuff" (itr)

But loqs is probably also already compiling bisection kernels, just can't help it wink

Seth my man you said 2nd link below but there is only one link? Either way I think I get it now.


I booted kernel 6.7.0-1.3 (has the issue) into tty2 and logged in (this prevents the graphical session from ever starting).

According to fastfetch (It runs automatically because it is on my zshrc) the ram usage is 558MiB.

free reports 535 MiB of ram used.

Then I ran systemctl isolate rescue.target which killed everything and asked me for my root password.

free -h now said that ram usage was 499 MiB

And dropping the caches lowered to 423 MiB.



Repeating the same steps on the LTS kernel (which does not have the issue) gave these results:

546 MiB of RAM used according to fastfetch.

530 MiB of RAM used according to free -h.

518 MiB after running systemctl isolate rescue.targe

which became 444 MiB after dropping the caches.



That's interesting, I should probably repeat the test after logging to a graphical session, because these results indicate that ram usage is lower on the kernel that has the issue lol

Is everything ok with the steps I'm doing?

Last edited by Samueru (2024-01-21 21:53:22)

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#16 2024-01-21 21:54:36

seth
Member
Registered: 2012-09-03
Posts: 60,147

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

There're 4 links in my signature.

According to fastfetch

Please use "cat /proc/meminfo" - every abstracting tool mushes relevant data into a single value, that's not really helpful.

I should probably repeat the test after logging to a graphical session

Yup, that was the idea wink

Edit: "dropping the caches" à la "echo 3 > /proc/sys/vm/drop_caches" is NOT goign to cut it if the RAM is "lost" in GART/GTT!
You have to reclaim it by allocating it.

Last edited by seth (2024-01-21 21:57:53)

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#17 2024-01-21 22:16:43

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

seth wrote:

There're 4 links in my signature.

According to fastfetch

Please use "cat /proc/meminfo" - every abstracting tool mushes relevant data into a single value, that's not really helpful.

I should probably repeat the test after logging to a graphical session

Yup, that was the idea wink

Edit: "dropping the caches" à la "echo 3 > /proc/sys/vm/drop_caches" is NOT goign to cut it if the RAM is "lost" in GART/GTT!
You have to reclaim it by allocating it.

Alright, I'm lost now.

Should I change from graphical.target to multi-user.target? (that is what the archwiki link is telling me to do)

Also if that was the idea it means all my steps were correct (besides not using meminfo) so I don't understand when you say that dropping caches won't work.

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#18 2024-01-21 22:20:11

seth
Member
Registered: 2012-09-03
Posts: 60,147

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

Not "echo 3 > /proc/sys/vm/drop_caches" but allocate the memory, https://bbs.archlinux.org/viewtopic.php … 6#p2145276

Sorry, isolation is actually in the paragraph above the direct link, https://wiki.archlinux.org/title/System … ent_target and the page also explains the targets in https://wiki.archlinux.org/title/Systemd#Targets - the direct link doesn't specifically address the multi-user.target but uses it as example on how to change the default target.

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#19 2024-01-21 22:34:14

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

seth wrote:

But loqs is probably also already compiling bisection kernels, just can't help it wink

smile

Final sanity check kernel:
https://drive.google.com/file/d/1cg_cxg … sp=sharing linux-6.7rc1-1.1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1CRHucL … sp=sharing linux-headers-6.7rc1-1.1-x86_64.pkg.tar.zst

Assuming that is good:

$ git bisect bad v6.7
status: waiting for good commit(s), bad commit known
[stephen@arch ~/builds/linux-stable/src/linux]$ git bisect good v6.7-rc1
Bisecting: 1100 revisions left to test after this (roughly 10 steps)
[17894c2a7aa60a6da7495cc8500a53523e64c4b1] Merge tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

https://drive.google.com/file/d/1rvPlsx … sp=sharing linux-6.7rc4.r152.g17894c2a7aa6-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1QXisXf … sp=sharing linux-headers-6.7rc4.r152.g17894c2a7aa6-1-x86_64.pkg.tar.zst

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#20 2024-01-21 23:19:41

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:
seth wrote:

But loqs is probably also already compiling bisection kernels, just can't help it wink

smile

Final sanity check kernel:
https://drive.google.com/file/d/1cg_cxg … sp=sharing linux-6.7rc1-1.1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1CRHucL … sp=sharing linux-headers-6.7rc1-1.1-x86_64.pkg.tar.zst

Assuming that is good:

$ git bisect bad v6.7
status: waiting for good commit(s), bad commit known
[stephen@arch ~/builds/linux-stable/src/linux]$ git bisect good v6.7-rc1
Bisecting: 1100 revisions left to test after this (roughly 10 steps)
[17894c2a7aa60a6da7495cc8500a53523e64c4b1] Merge tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

https://drive.google.com/file/d/1rvPlsx … sp=sharing linux-6.7rc4.r152.g17894c2a7aa6-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1QXisXf … sp=sharing linux-headers-6.7rc4.r152.g17894c2a7aa6-1-x86_64.pkg.tar.zst


linux-6.7rc1-1.1-x86_64.pkg.tar.zst is good. The issue is gone.


Should I now test linux-6.7rc4.r152.g17894c2a7aa6-1-x86_64.pkg.tar.zst?

Edit: Just went ahead and tested it as well, it is also good.

Last edited by Samueru (2024-01-21 23:23:47)

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#21 2024-01-22 00:01:09

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

$ git bisect good
Bisecting: 545 revisions left to test after this (roughly 9 steps)
[6d04b70ea48b2d84ebf6cd9ad9b01ba50a58542e] Merge tag 'dmaengine-fix-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

https://drive.google.com/file/d/1xayw-x … sp=sharing linux-6.7rc5.r261.g6d04b70ea48b-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1XfuUQD … sp=sharing linux-headers-6.7rc5.r261.g6d04b70ea48b-1-x86_64.pkg.tar.zst

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#22 2024-01-22 00:15:54

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:
$ git bisect good
Bisecting: 545 revisions left to test after this (roughly 9 steps)
[6d04b70ea48b2d84ebf6cd9ad9b01ba50a58542e] Merge tag 'dmaengine-fix-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

https://drive.google.com/file/d/1xayw-x … sp=sharing linux-6.7rc5.r261.g6d04b70ea48b-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1XfuUQD … sp=sharing linux-headers-6.7rc5.r261.g6d04b70ea48b-1-x86_64.pkg.tar.zst

This one is good as well.

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#23 2024-01-22 01:55:29

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

$ git bisect good
Bisecting: 277 revisions left to test after this (roughly 8 steps)
[fa655abe42c65e7e4ad52baf280dadfb571c110e] Merge tag 'input-for-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

https://drive.google.com/file/d/1v1ftYg … sp=sharing linux-6.7rc6.r256.gfa655abe42c6-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1Ubrfk- … sp=sharing linux-headers-6.7rc6.r256.gfa655abe42c6-1-x86_64.pkg.tar.zst

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#24 2024-01-22 02:05:47

Samueru
Member
Registered: 2023-07-03
Posts: 29

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

loqs wrote:
$ git bisect good
Bisecting: 277 revisions left to test after this (roughly 8 steps)
[fa655abe42c65e7e4ad52baf280dadfb571c110e] Merge tag 'input-for-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

https://drive.google.com/file/d/1v1ftYg … sp=sharing linux-6.7rc6.r256.gfa655abe42c6-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1Ubrfk- … sp=sharing linux-headers-6.7rc6.r256.gfa655abe42c6-1-x86_64.pkg.tar.zst

All good.

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#25 2024-01-22 08:48:45

loqs
Member
Registered: 2014-03-06
Posts: 18,156

Re: Kernel 6.7 Increased the idle ram usage from 500 to 700 MiB

$ git bisect good
Bisecting: 142 revisions left to test after this (roughly 7 steps)
[5939a693dc6e6d6f293681017c70ff60c3723d43] Merge tag 'drm-fixes-2024-01-04' of git://anongit.freedesktop.org/drm/drm

https://drive.google.com/file/d/1Sk3hoA … sp=sharing linux-6.7rc8.r35.g5939a693dc6e-1-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1Y94EK7 … sp=sharing linux-headers-6.7rc8.r35.g5939a693dc6e-1-x86_64.pkg.tar.zst

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