Comment 20 for bug 289338

I can confirm this. I turned on previews/thumbnails for most file types (as it's a very cool feature) and then went about normal usage with Konqueror. After not long I found several kio_thumbnail processes chewing through resources like it's going out of style, the most flagrant of which goes something like this in top:

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11053 neil 20 0 4396m 1.2g 44m S 25 59.0 6:52.47 kio_thumbnail

...and my 2G RAM machine is suddenly 2.7G into swap (and rising fast).

Since among other things, I opened up my home directory, I checked to see if thumbnails were being generated recursively (which lsof suggested they were not), which is good. However, It's absolutely *INSANE* that kio_thumbnail is now approaching 5G of memory used, it's not like it's thumbnailing files anywhere close to that big!

Since I wrote the first bit, my swap usage has grown to 3.2G and I'm killing kio_thumbnail manually... Much better, close to 4G of RAM + swap freed.