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KDE4 is "slow" - why?

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haukew Registered Member Posts 22 Karma 0 OS	KDE4 is "slow" - why? Tue Nov 25, 2008 2:50 pm Hi! You probably can't read anymore about KDE4 being slow because it seems to me everybody is picking on that - but this thread is neither a complaint nor a flame, it's (mostly) a question: Why is KDE4 "slower" than KDE3? I read somewhere that KDE4 was supposed to be (even) faster than KDE3 - they wrote something about icons loading in only 25% of the time they needed before, qt4 being generally faster and less bloated etc. I believe all this - but then how come KDE4 is less responsive than KDE3? Even with all effects disabled it isn't necessarily faster than with all effects on (actually the desktop effects make my system close to nothing slower - good work btw ) but it always has this 0,1 sec reaction time which you realize immediately and doesn't make using the desktop fun - for example when i switch desktops, resize windows, start KDE-programs and you have an empty window... reading the schedule for 4.2 i see no "speed up KDE/plasma" etc. Is this because features are more important and you throw all recources there or is it simply not being worth mentioning but worked hard on? Thanks in advance for your answers Hauke
musta ruhtinas Registered Member Posts 9 Karma 0 OS	RE: KDE4 is "slow" - why? Tue Nov 25, 2008 4:05 pm That's odd, as for me KDE (both 4.1.3 and 4.2) seems snappier than 3.5.x. There is only one agonizingly slow thing, and that is Dolphin. Running Kubuntu Jaunty (9.04) on: Laptop -> Toshiba Satellite A200-14D, Intel Core Duo T2350 (@1.86GHz), 1GB DDR2 (667MHz) RAM, NVIDIA GeForce Go 7300 256MB Desktop -> Intel Pentium 4 (@2.4 Ghz), 1GB DDR-400, ATI Radeon 9200 128MB
DanielW KDE Developer Posts 71 Karma 0 OS	RE: KDE4 is "slow" - why? Tue Nov 25, 2008 7:09 pm If you are using Nvidia graphics make sure you use there latest Beta driver. That makes a huge difference in graphics speed. DanielW, proud to be a member of KDE forums since 2008-Oct.
joethefox Registered Member Posts 122 Karma 0 OS	RE: KDE4 is "slow" - why? Tue Nov 25, 2008 9:10 pm strange... yesterday I've updated my KDE4 SVN installation and what I see? a speedup in opening new dolphin windows and in generally increased responsiveness of the whole system. Only a mac gave me this "sensation"... KDE4, I can only speak for myself obviously, is much faster than kde 3.5.10!!! KDE 4.1.80 (KDE 4.2 Beta1) Turion 64 ML28 ATI X200 1,5 GB RAM joethefox, proud to be a member of KDE forums since 2008-Oct.
haukew Registered Member Posts 22 Karma 0 OS	RE: KDE4 is "slow" - why? Tue Nov 25, 2008 10:01 pm In fact i do use a nvidia-card - my driver-version is 173.14.12 which is the latest available driver in opensuse. I'll try using the official driver, thanks guys [edit] yeah, that did it - runs much faster now Last edited by haukew on Tue Nov 25, 2008 10:18 pm, edited 1 time in total.
akoskm Registered Member Posts 135 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 1:01 am I can confirm this. For me KDE 4.1.3 is significantly slower than 3.5.10. I'm disabled Compositing in xorg, using the latest nvidia drivers, but it is still slow. It takes 30 sec to boot up the Desktop Environment. KDE 3.5.10 loads in 10 seconds. Last edited by akoskm on Wed Nov 26, 2008 1:01 am, edited 1 time in total. http://yami.googlecode.com/ http://mydailyhash.wordpress.com/
pansz Registered Member Posts 113 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 3:17 am afaik KDE 4.1 is slow, and I think KDE 4.3 might be faster anyway. I don't know why, but I don't think we can expect a DE made at the year 2007 would be faster than those made in 2002 (on the same computer). So, simply don't expect KDE4 being any faster than KDE3.
joethefox Registered Member Posts 122 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 7:42 am pansz wrote:afaik KDE 4.1 is slow, and I think KDE 4.3 might be faster anyway. I don't know why, but I don't think we can expect a DE made at the year 2007 would be faster than those made in 2002 (on the same computer). So, simply don't expect KDE4 being any faster than KDE3. not in my case! in my laptop KDE 4.1.80 is faster than KDE 3.5.10. I put my laptop available for any verification is also for this reason that I believe this project is something fantastic! joethefox, proud to be a member of KDE forums since 2008-Oct.
Janne Registered Member Posts 135 Karma 0	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 8:06 am haukew wrote: Why is KDE4 "slower" than KDE3? Is it? I read somewhere that KDE4 was supposed to be (even) faster than KDE3[7quote] Yep. But I think that the deal is that if KDE3 was implemented using Qt4 and other new related technologies, it would be faster and consume less RAM. But KDE4 is not KDE3 implemented with Qt4. KDE4 has lots of new features and functionality when compared to KDE3. It's new and different when compared to KDE3. In many ways, comparing KDE3 and 4 is comparing apples and oranges. Qt4 is faster than Qt3. But KDE-folks did new things that KDE3 does not du, so instead of making the desktop faster, the desktop is about as fast, but it does more. That said, I think that KDE4 will only get faster from this point, since developers can now start to optimize the desktop. they wrote something about icons loading in only 25% of the time they needed before, qt4 being generally faster and less bloated etc. I believe all this - but then how come KDE4 is less responsive than KDE3? KDE3 has had a lot of optimizations applied to it over the years. KDE4 is just starting out with those optimizations. And, like I said, it's hard to compare KDE3 and 4, since they are not similar. reading the schedule for 4.2 i see no "speed up KDE/plasma" etc. Is this because features are more important and you throw all recources there or is it simply not being worth mentioning but worked hard on? It's because optimizations are not mentioned in FEATURE plan. Feature plan only lists features, optimizations are.... optimizations. It doesn't list bugfixes either, and that doesn't mean that they are not fixing bugs.[hr] [quote='pansz' pid='20908' dateline='1227669445'] afaik KDE 4.1 is slow, and I think KDE 4.3 might be faster anyway. I don't know why, but I don't think we can expect a DE made at the year 2007 would be faster than those made in 2002 (on the same computer). So, simply don't expect KDE4 being any faster than KDE3. Yeah. Windows95 is snappier than Windows Vista on the same machine. Last edited by Janne on Wed Nov 26, 2008 8:06 am, edited 1 time in total. Freedom is not a destination, it's a journey
akoskm Registered Member Posts 135 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 7:54 pm DanielW wrote:If you are using Nvidia graphics make sure you use there latest Beta driver. That makes a huge difference in graphics speed. Today I'm upgraded to driver version 177.82. It isn't faster, but I get back my old screen corruption with programs started trough wine. LOL! Last edited by akoskm on Wed Nov 26, 2008 7:54 pm, edited 1 time in total. http://yami.googlecode.com/ http://mydailyhash.wordpress.com/
tkoski Registered Member Posts 371 Karma 3 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 8:00 pm akoskm wrote:Today I'm upgraded to driver version 177.82. It isn't faster, but I get back my old screen corruption with programs started trough wine. LOL! Hi Akoskm, latest version I think is 180.08 [2008-11-26] Last edited by tkoski on Wed Nov 26, 2008 8:01 pm, edited 1 time in total. Attitude before intelligence.
akoskm Registered Member Posts 135 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 9:53 pm tkoski wrote: akoskm wrote:Today I'm upgraded to driver version 177.82. It isn't faster, but I get back my old screen corruption with programs started trough wine. LOL! Hi Akoskm, latest version I think is 180.08 [2008-11-26] I'm downloading drivers from http://www.nvidia.com/object/unix.html, but 180.08 isn't included here. I'll try to find it. Thanks! http://yami.googlecode.com/ http://mydailyhash.wordpress.com/
tkoski Registered Member Posts 371 Karma 3 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 9:59 pm akoskm wrote:I'm downloading drivers from http://www.nvidia.com/object/unix.html, but 180.08 isn't included here. I'll try to find it. Thanks! How about from here: http://www.nvidia.com/Download/Find.aspx?lang=en-us ? Attitude before intelligence.
akoskm Registered Member Posts 135 Karma 0 OS	RE: KDE4 is "slow" - why? Wed Nov 26, 2008 10:22 pm tkoski wrote: akoskm wrote:I'm downloading drivers from http://www.nvidia.com/object/unix.html, but 180.08 isn't included here. I'll try to find it. Thanks! How about from here: http://www.nvidia.com/Download/Find.aspx?lang=en-us ? Ok. Thanks, I'm downloaded it, no screen corruption. BTW my video card isn't included in the list of Product Type (GeForce M/Go) -> Product Series. http://yami.googlecode.com/ http://mydailyhash.wordpress.com/
alukin Registered Member Posts 40 Karma 1	Re: KDE4 is Wed Aug 26, 2009 1:26 pm I do not why but after upgrading to KDE 4.3 on Fedora 11 desktop switched to XRender and everything got terribly slow with even any newest NVidia drivers. OpenGL rendering does not work anymore. alukin, proud to be a member of KDE forums since 2008-Nov.