Public bug reported:
After latest kernel installation my system became 3 times slower.
Here is test results:
user@localhost:~$ uname -a
Linux localhost 4.4.0-112-generic #135~14.04.1-Ubuntu SMP Tue Jan 23 20:41:10
UTC 2018 i686 i686 i686 GNU/Linux
user@localhost:~$ 7z b
7-Zip 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
p7zip Version 9.20 (locale=ru_RU.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
RAM size: 8035 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2
Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS
22: 1676 130 1257 1630 | 29281 196 1346 2643
23: 1677 131 1307 1708 | 29059 196 1355 2660
24: 1679 132 1370 1805 | 28949 197 1364 2686
25: 1671 132 1446 1908 | 28716 197 1370 2701
----------------------------------------------------------------
Avr: 131 1345 1763 197 1359 2673
Tot: 164 1352 2218
Installed kernel version:
user@localhost:~$ LC_MESSAGES=C apt-cache policy linux-image-4.4.0-112-generic
linux-image-4.4.0-112-generic:
Installed: 4.4.0-112.135~14.04.1
Candidate: 4.4.0-112.135~14.04.1
Version table:
*** 4.4.0-112.135~14.04.1 0
500 http://mirror.yandex.ru/ubuntu/ trusty-proposed/main i386 Packages
100 /var/lib/dpkg/status
Same test for linux-image-4.4.0-104-generic:
user@localhost:~$ uname -a
Linux localhost 4.4.0-104-generic #127~14.04.1-Ubuntu SMP Mon Dec 11 12:44:57
UTC 2017 i686 i686 i686 GNU/Linux
user@localhost:~$ 7z b
7-Zip 9.20 Copyright (c) 1999-2010 Igor Pavlov 2010-11-18
p7zip Version 9.20 (locale=ru_RU.UTF-8,Utf16=on,HugeFiles=on,2 CPUs)
RAM size: 8035 MB, # CPU hardware threads: 2
RAM usage: 425 MB, # Benchmark threads: 2
Dict Compressing | Decompressing
Speed Usage R/U Rating | Speed Usage R/U Rating
KB/s % MIPS MIPS | KB/s % MIPS MIPS
22: 5839 161 3531 5680 | 59612 198 2713 5382
23: 5864 162 3684 5975 | 59080 198 2726 5409
24: 5870 164 3842 6311 | 58559 199 2735 5434
25: 5884 166 4049 6718 | 57775 198 2749 5434
----------------------------------------------------------------
Avr: 163 3777 6171 198 2731 5415
Tot: 181 3254 5793
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-4.4.0-112-generic 4.4.0-112.135~14.04.1
ProcVersionSignature: Ubuntu 4.4.0-104.127~14.04.1-generic 4.4.98
Uname: Linux 4.4.0-104-generic i686
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: i386
CurrentDesktop: LXDE
Date: Thu Jan 25 10:25:45 2018
InstallationDate: Installed on 2013-01-30 (1820 days ago)
InstallationMedia: Lubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017)
SourcePackage: linux-lts-xenial
UpgradeStatus: Upgraded to trusty on 2013-05-01 (1729 days ago)
** Affects: linux-lts-xenial (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 package-from-proposed third-party-packages trusty
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https://bugs.launchpad.net/bugs/1745314
Title:
low perforamnce after kernel upgrade
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