Hi. First, I want to say that I generally consider these whines about KDE being bloatware and slow-working as something completely unproven and subjective, but this time I am not sure if some of them weren't right.

I always used KDE and had 3 GB of RAM, so didn't notice any great slowdowns. But recently, one of my 1GB units died and now it looks like My computer isn't able to handle KDE and VirtualBox simultaneously. (RAM gets completely filled, and VirtualBox closes)

Ok, enough rant. How I discovered that - I have Nepomuk and Semantic Desktop turned on, so I wasn't entirely surprised when I saw a process called "virtuoso -t" taking >400MB of memory. (Taken from KDE System Monitor) "Does it really need that much?" I asked myself. But I thought "Why should I care? I have 2 GB of RAM, and these tags and annotations thing is quite good, actually. And if I need more memory, I can disable Nepomuk and the memory gets freed."

Well, it isn't so great, as it turns out - even though I can disable Nepomuk and Semantic Desktop and nepomuk processes stop, the "virtuso -t" process still runs and takes ~416MB of memory.

Why does Virtuso takes so much RAM (more than my actual Nepomuk database size, which is 219MB!) and why doesn't it stop when Nepomuk is stopped?

PS.: KDE 4.4.

I suspect there is a problem here that will be solved, in that it does seem to get worse with time. Try stopping nepomuk with

Code: Select all

qdbus org.kde.NepomukServer /nepomukserver org.kde.NepomukServer.quit

then restart it with

Code: Select all

nepomukserver

. I think it might help

Virtuoso -t uses 230MB of my RAM right now. Much better, but I still am not sure whether this is how it should work.

But disabling Semantic Desktop and Nepomuk now also stops Virtuoso. Glad it works now, thanks

Try changing the memory usage settings in System Settings > Advanced > Desktop Search.

That helped. Thanks a lot

Also see kdebase-runtime bug #578215