This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/2009882
Title:
Linux 5.4.0-144-generic x86_64 multithread / fork issues
Status in linux package in Ubuntu:
Confirmed
Bug description:
We have same servers already running in 5.4.0-122 , 126, 128 and 131
releases with no issues whatsoever and exceptional good performance.
They basically have either Apache/2.4.41/mod_php7.4 or
Apache/2.4.41/mpm_event with phm7.4-fpm setups, all working perfect.
When we load kernel 5.4.0-144 CPU processing go thru the roof, and
process kworker/u17:0-xprtiod show at the top. Both setups perform
badly with Apache performance going avg 200ms/req in older kernels to
over 4,500ms/req in this 144 release. CPU usage from avg 0.4% to over
50% under same traffic and requests rate.
We just reloaded old kernels back, via /etc/default/grub, and
performance is right back. Same packages, same services, everything
the same but the Linux kernel.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-144-generic 5.4.0-144.161
ProcVersionSignature: Ubuntu 5.4.0-144.161-generic 5.4.229
Uname: Linux 5.4.0-144-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Mar 9 13:21 seq
crw-rw---- 1 root audio 116, 33 Mar 9 13:21 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.11-0ubuntu27.25
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: pass
Date: Thu Mar 9 13:22:31 2023
InstallationDate: Installed on 2021-11-17 (477 days ago)
InstallationMedia: Ubuntu-Server 20.04.3 LTS "Focal Fossa" - Release amd64
(20210824)
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=uhci_hcd/2p, 12M
|__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 0, Class=Hub, Driver=hub/7p, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
MachineType: VMware, Inc. VMware Virtual Platform
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 svgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-144-generic
root=/dev/mapper/ubuntu--vg-ubuntu--lv ro maybe-ubiquity
RelatedPackageVersions:
linux-restricted-modules-5.4.0-144-generic N/A
linux-backports-modules-5.4.0-144-generic N/A
linux-firmware 1.187.36
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/12/2018
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd12/12/2018:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
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