Hgh CPU load from Plasmashell and Xorg

[NoWorries]

I have installed Artful on my Wife's laptop and I have not used any fancy proposed repositories like I did on my "experimental" desktop.

What I have noticed is that this new installation has plasmashell and Xorg using about 36% and 19% of the CPU. If I start Synaptic update-apt-xapi uses about 48% and then finally drops out, while plamashell then increases to about 42$ and Xorg to 22%. The total CPU for everything amounts to 70%, ie firefox and ksysguard included.

I consider this excessive and I am wondering if anyone else is experiencing this with a new installation.

[chimak111]

... If I start Synaptic update-apt-xapi uses about 48% and then finally drops out. ...

Yes, it shows "Rebuilding search index" for some time and the %CPU is high then. After that's done, "Rebuilding search index" is replaced by "Quick Filter".

acheron explained that "apt-xapian-index" is brought in by libqapt.

I don't know if there's a way to disable Synaptic's Quick Filter other than by removing apt-xapian-index which may not be a good idea.

I ran a simulated purge of apt-xapina-index and a lot of other important packages would be taken out as well.

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
 libxapian-1.3-5 python3-xapian1.3
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
 apt-xapian-index* apturl-kde* gstreamer-qapt* kubuntu-driver-manager* kubuntu-notification-helper* libkubuntu1* libqapt3* libqapt3-runtime*
 qapt-batch* qapt-deb-installer* software-properties-kde*
0 upgraded, 0 newly installed, 11 to remove and 0 not upgraded.

I think the consequences would be similar for 17.10. (I did this on 16.04.)

[NoWorries]

I have now found that the system is operating normally with plasmashell only popping in and out briefly. I am beginning to think that it now includes the role of baloo which I understood was involved in allowing fast access to files.

As I keep a separate root and home directories, the new installation was probably resorting the organisation of the access to files. I am sure there are many on this forum who understand this aspect more than me.

I am now very pleased with the responsiveness of Artful.

[NoWorries]

I confess that I was mistaken as in the past couple of days I have noticed plasmashell using about 50% CPU for long periods of time. It seems very easy to provoke this type of behaviour, particularly if discover does an update.