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Has anyone noticed a performance difference between windows and linux - in favor of windows regardless of which player I use?
Myself, I have way better performance in Windows XP SP3 than in Ubuntu 8.10 Intrepid Ibex. That wouldn't be a problem if there wasn't so that XBMC has the jitters in windows and can't playback anything smoothly while the linux version runs perfectly smoot except for dropped frames.
Hardware:
Nforce 630i-/Geforce 7100-based motherboard
C2D E6420 @ ~2.5ghz
2gb PC6400
Radeon HD4550 (but the perfomance difference is there using the integrated graphics as well)
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Please try testing at 3ghz. I had dropped frames in Linux on some content and certainly on Killa sample until I pushed to 3ghz, at that point things became pretty smooth.
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You ought to be able to squeeze more than 300mhz out of it. Some folks are reporting at higher than 3ghz so I'd think you could at least get 2.8 - what speed is your memory running and what is it's spec?
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malloc
Team-XBMC Developer
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please don't encourage our users to overclock their systems. not everyone is comfortable with it as easy as it may be for you.
lolita, how many threads are you going to start asking the same question? if you're comparing non-xbmc windows players then it's likely that you're seeing some gpu acceleration. if you're comparing xbmc to xbmc (win vs linux) then it could be an opengl issue. it's tough to say without having the system in front of me and you don't seem to be getting much agreement from other users in any of the threads you've started.
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It got a bit spread out and I'm sorry for that. But I don't think anyone had told me that they've not experienced the same thing.
The thing is that the behaviour is in applications using livavcodec (xbmc, ffdshow, vlc and so on) which seems very strange to me since it was developed for linux primarily?
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Here is my experience with performance issues:
- Nforce 8200 based system
- Athlon X2 5050e @ 2.6 GHz
- 1 GB RAM DDR800
- XBMC 8.10 on WinXP SP2, latest stable Nvidia drivers
Some samples at 1080p. Nearly no frames dropped. OSD states avg. CPU usage between 50-80%.
When run windowed I can see in the task manager that both cores are used equally more or less.
- XBMC 8.10 on Ubuntu 8.10, Nvidia driver 177.x and 180.x
Same samples at 1080p. Much more frames dropped. OSD states each core separately. One core is used upto 100% while the other is idling at 50%.
Seems to me an issue in libavcodec and threading on multicore systems.
Any idea? Known problem?
mulder77
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malloc
Team-XBMC Developer
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Now that sounds like a bug. File a ticket.
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malloc
Team-XBMC Developer
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I think so. Message pike.