Arch Linux

michi

Member

From: Czech republic

Registered: 2011-03-04

Posts: 10

high load with cifs mounts

hello, anyone else expiriencing high load with cifs mountpoints?
found out that cifsd-cfid-laundromat

any ideas how to fix? try patch found on internet?

❯ w
 06:51:56 up 24 min,  2 users,  load average: 6.54, 6.72, 5.55
USER     TTY       LOGIN@   IDLE   JCPU   PCPU  WHAT
root               06:47   24:47   0.00s  0.06s sshd: root@pts/0

❯ ps -eo s,pid,user,cmd | grep ^[RD]
D    6203 root     [cifsd-cfid-laundromat]
D    6205 root     [cifsd-cfid-laundromat]
D    6246 root     [cifsd-cfid-laundromat]
D    6640 root     [cifsd-cfid-laundromat]
D    6957 root     [cifsd-cfid-laundromat]
D    6959 root     [cifsd-cfid-laundromat]
R   47588 root     ps -eo s,pid,user,cmd

mellofone

Member

Registered: 2009-03-13

Posts: 37

Re: high load with cifs mounts

Having the same CPU issue on a few machines. I'm testing one that has a resolve by downgrading the kernel to 6.4.4-arch1-1.

loqs

Member

Registered: 2014-03-06

Posts: 18,879

Re: high load with cifs mounts

found out that cifsd-cfid-laundromat

any ideas how to fix? try patch found on internet?

This patch?  To apply follow steps 1 and 2 from Patching_packages#Applying_patches.

6.5.4.arch2-1 with that patch applied:
https://drive.google.com/file/d/1Efzpzz … sp=sharing linux-6.5.4.arch2-1.2-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1KJnQLI … sp=sharing linux-headers-6.5.4.arch2-1.2-x86_64.pkg.tar.zst
Edit:
https://github.com/torvalds/linux/commi … 1f30026675
Edit2:
https://lore.kernel.org/linux-cifs/2023 … uebit.com/

Last edited by loqs (2023-10-05 21:47:26)

matoro

Member

Registered: 2016-08-31

Posts: 6

Re: high load with cifs mounts

found out that cifsd-cfid-laundromat

any ideas how to fix? try patch found on internet?

This patch?  To apply follow steps 1 and 2 from Patching_packages#Applying_patches.

6.5.4.arch2-1 with that patch applied:
https://drive.google.com/file/d/1Efzpzz … sp=sharing linux-6.5.4.arch2-1.2-x86_64.pkg.tar.zst
https://drive.google.com/file/d/1KJnQLI … sp=sharing linux-headers-6.5.4.arch2-1.2-x86_64.pkg.tar.zst
Edit:
https://github.com/torvalds/linux/commi … 1f30026675
Edit2:
https://lore.kernel.org/linux-cifs/2023 … uebit.com/

Thank you for pointing out this patch, this was driving me mad!

loqs

Member

Registered: 2014-03-06

Posts: 18,879

Re: high load with cifs mounts

If you still have issues after applying [1] there are follow up change that have just made it to mainline [2][3][4].
Edit:
[1][2][3][4] are queued for 6.5.10 [5][6][7][8].

[1]: https://github.com/torvalds/linux/commi … 1f30026675
[2]: https://github.com/torvalds/linux/commi … 604c61f72a
[3]: https://github.com/torvalds/linux/commi … 6e37129cf8
[4]: https://github.com/torvalds/linux/commi … 62f387e6a3
[5]: https://git.kernel.org/pub/scm/linux/ke … e3d2633f77
[6]: https://git.kernel.org/pub/scm/linux/ke … e3d2633f77
[7]: https://git.kernel.org/pub/scm/linux/ke … e3d2633f77
[8]: https://git.kernel.org/pub/scm/linux/ke … e3d2633f77

Last edited by loqs (2023-10-29 11:04:13)