Hello,

I have rather silent system but still HDD is thumping. I already increased kjournald2 from default 5 to 120 but it is still noisy. With iotop I checked that it is KDE fault - KDE related processes are constantly reading and writing from HDD.

Is there any way to reduce it?

TIA

Do you have Desktop Search (Nepomuk) enabled?

Yes, but turned off strigi. And now I turned off Nepomuk and KDE still reads HDD non-stop. It is enough to switch to KMail - without doing *anything* - just focus - to kmail process reading/writing something from disk. Konsole also does that, Konqueror, etc.

It is often "kdeinit4: {appname}" process. Interesting thing is also that KDE read/write is noisy comparing to other processes, eg mplayer interaction is more silent.

KMail needs to interact with its index files, and it is possible that if the entire UI needs to be redrawn that the icons need to be loaded from disk again.

I didn't interact with KMail itself - just focused on it. Also it was only example - it applies to other KDE apps like konsole, konqueror.

You can use iotop (in a terminal) to find out who's using the disk.

From my first post:

With iotop I checked that it is KDE fault - KDE related processes are constantly reading and writing from HDD.

konsole, konqueror, kdeinit4.