CIFS Mounts Keep Load Average at n+1
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-signed-hwe-6.5 (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Today I noticed that my two primary Ubuntu boxes were running at high load. After investigation, I discovered at that unmounting their CIFS shares alleviating the high load.
I rebooted to the previous kernel, linux-modules-
I rebooted to the current kernel, linux-modules-
The load appears to be n+1, where n is the number of CIFS mounts. (Based on a sample of two boxes.)
I confirmed that the default mount options (e.g. the ones not specified in fstab) are the same between the two kernels.
This *might* also be slowing down external (USB disk access. I'm still investigating that.
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-
ProcVersionSign
Uname: Linux 6.5.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckR
CurrentDesktop: ubuntu:GNOME
Date: Fri Jan 12 19:47:25 2024
InstallationDate: Installed on 2020-10-01 (1198 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
TERM=xterm-
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-
UpgradeStatus: Upgraded to jammy on 2023-01-01 (376 days ago)
Mount options (all names and IPs redacted):
# mount | grep mount-name | sed -e's/,/\n,/g' name/mount- name on /mnt/mount-name type cifs (rw client- name
//server-
,relatime
,vers=3.1.1
,cache=strict
,username=
,domain=domain-name
,uid=0
,noforceuid
,gid=0
,noforcegid
,addr=192.1.1.123
,file_mode=0600
,dir_mode=0700
,seal
,soft
,nounix
,serverino
,mapposix
,mfsymlinks
,rsize=4194304
,wsize=4194304
,bsize=1048576
,echo_interval=60
,actimeo=1
,closetimeo=1)