[Bug 1973434] Re: massive performance issues since 22.04 upgrade

BTW: also, as I have an nvidia graphics card in that machine, one could think something is wrong with the graphics drivers...
But I tried the nvidia drivers as recommended by the driver GUI tool as well as nouveau. It "feels" like the nvidia drivers are even slightly worse.

On the Ubuntu live USB sticks, where perfromance is better, nouveau is
used, on Poop OS the nividia driver - they seem all work similarly good.

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https://bugs.launchpad.net/bugs/1973434

Title:
massive performance issues since 22.04 upgrade

Status in linux package in Ubuntu:
Confirmed

Bug description:
Hi,
After upgrading to 22.04 i had to fight with massive performance issues.

Browsers appeared to hang every other minute, youtube videos being
laggy and hang in between, applications in a virtualbox VM where slow
and also hanging every other minute to a level of not being useable.
On a pretty recent and powerful system just 2 years old.

I noticed CPU jumps in top, but also somehow thought it could be a graphics issue so invested some time installing nvidia drivers properly.
Also I wondered if it might be the lowlatency kernel I normally use because I do audio stuff, and switched to generic. But nothing helped.

ThenI had the idea it could be a kernel/scheduler issue because the
system wasn't always slow, but it appeared certain things kept hanging
when other processed had a lot of cpu for a few seconds.

So I got a recent mainline kernel, configured it with my last running
config from 21.10 before the update, made the debs and installed them,
and now can tell that a mainline kernel 5.17.7 with all the dkms
modules that i had before which got compiled automatically at
installation brings back a "normal" performance.

I can browse the web, run multiple youtube vids at once, even in
another browser, have thunderbird running, and a virtualbox machine
open with another browser for some web app testing and everything runs
fine and smooth, no lagging.

Not sure yet what the real reason is - either the kernel version, or a
patch in the ubuntu version, or the 22.04 kernel config so far, or
some configuration made in 21.10 that isn't good with 22.04 and it's
kernel anymore.

I will go ahead tomorrow and see if I can build a vanilla kernel with
the config from the ubuntu 22.04 kernel and "make oldconfig", then I
will be able to tell if only the config is making the difference.

Please let me know of there is anything I should test to further
analyze this issue, or any ideas I can try to solve it without having
to run a mainline manually installed kernel.

Thanks.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-generic 5.15.0.30.33
ProcVersionSignature: Ubuntu 5.15.0-30.31-generic 5.15.30
Uname: Linux 5.15.0-30-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: henning 6198 F.... pulseaudio
/dev/snd/controlC1: henning 6198 F.... pulseaudio
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat May 14 23:02:38 2022
InstallationDate: Installed on 2020-04-12 (761 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: LENOVO 20QV00CEGE
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-30-generic root=/dev/mapper/vgubuntu-root ro
RelatedPackageVersions:
linux-restricted-modules-5.15.0-30-generic N/A
linux-backports-modules-5.15.0-30-generic N/A
linux-firmware 20220329.git681281e4-0ubuntu3
SourcePackage: linux
UpgradeStatus: Upgraded to jammy on 2022-04-28 (15 days ago)
dmi.bios.date: 12/06/2021
dmi.bios.release: 1.42
dmi.bios.vendor: LENOVO
dmi.bios.version: N2OET55W (1.42 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20QV00CEGE
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T08861 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.23
dmi.modalias: dmi:bvnLENOVO:bvrN2OET55W(1.42):bd12/06/2021:br1.42:efr1.23:svnLENOVO:pn20QV00CEGE:pvrThinkPadX1Extreme2nd:rvnLENOVO:rn20QV00CEGE:rvrSDK0T08861WIN:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20QV_BU_Think_FM_ThinkPadX1Extreme2nd:
dmi.product.family: ThinkPad X1 Extreme 2nd
dmi.product.name: 20QV00CEGE
dmi.product.sku: LENOVO_MT_20QV_BU_Think_FM_ThinkPad X1 Extreme 2nd
dmi.product.version: ThinkPad X1 Extreme 2nd
dmi.sys.vendor: LENOVO

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