Near 80% CPU consumption when doing install of downloaded packages.

[yurik81]

Binary package hint: update-manager

Near 80% CPU consumption when doing install of downloaded packages. Same behavior in other package managers like Synaptic, Ubuntu Software Center, Aptitude.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.6
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Thu Apr 22 18:26:49 2010
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager

[yurik81 (yurik81)]

Hardware info attached.

[Michael Vogt (mvo)]

Thanks for your bugreport.

This does not sound unusual, installing packages is a operation that requires some memory/io/cpu time. Why do you consider it a bug? Did it increase ?

[yurik81 (yurik81)]

Maybe it's not a bug in the usual sense, but one of the most annoying things. Even the modern computer has lags during the installation of packages. I wonder how many people have the same behavior as I am.

I forgot to say that CPU load is to high because of iowait.

[Jean-Baptiste Lallement (jibel)]

that's probably because of bug 537241 and introduction of fsyncs in dpkg to prevent data corruption.
Do you see this high cpu load rather with packages containing many small files or few large ones ?

[yurik81 (yurik81)]

The processor has a high load during the daily updates of Ubuntu that is, with a large number of small packages. Looks like bug 537241 is my case. Thanks.