Windows vs Linux h264-decoding performance
#15
mulder77de Wrote: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

Can you point to any freely available samples that display this behavior? Might help troubleshooting and I'd like to see how it flies on my system. Right now I mostly just have H.264 encoded files and load seems pretty equal last I checked. Wondering if it's an encoding thing or what...
Openelec Gotham, MCE remote(s), Intel i3 NUC, DVDs fed from unRAID cataloged by DVD Profiler. HD-DVD encoded with Handbrake to x.264. Yamaha receiver(s)
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Messages In This Thread
[No subject] - by BLKMGK - 2008-12-02, 14:46
[No subject] - by LolitaRainking - 2008-12-02, 15:21
[No subject] - by BLKMGK - 2008-12-02, 23:46
[No subject] - by malloc - 2008-12-03, 07:57
[No subject] - by LolitaRainking - 2008-12-03, 10:11
[No subject] - by riker77 - 2008-12-03, 12:22
[No subject] - by mulder77de - 2008-12-03, 12:24
[No subject] - by malloc - 2008-12-03, 12:50
[No subject] - by LolitaRainking - 2008-12-03, 15:10
[No subject] - by riker77 - 2008-12-03, 17:45
[No subject] - by LolitaRainking - 2008-12-03, 18:14
[No subject] - by riker77 - 2008-12-03, 19:32
[No subject] - by malloc - 2008-12-03, 23:08
[No subject] - by BLKMGK - 2008-12-04, 00:41
[No subject] - by LolitaRainking - 2008-12-04, 09:36
[No subject] - by mulder77de - 2008-12-04, 12:16
[No subject] - by eriksmith200 - 2008-12-04, 12:41


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