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| Lower x.org cpu load dramatically in R5E50 when watching HD http://forum.linhes.org/viewtopic.php?f=3&t=13550 |
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| Author: | MrFahrenheit [ Mon Jan 15, 2007 7:39 pm ] |
| Post subject: | Lower x.org cpu load dramatically in R5E50 when watching HD |
The cpu load from x.org for me was above 50% when watching high def channels. Since mythfrontend was using the other 50%, I was getting audio stuttering and other problems... This worked for me on an nVidia 6200: First, upgrade to the latest nVidia driver using instructions from here: http://mysettopbox.tv/phpBB2/viewtopic. ... highlight= (Note, read the whole thread first) Then, edit the /etc/X11/xorg.conf file and add the line Option "UseEvents" "True" To the "Device" section. I got the information from here: http://www.gossamer-threads.com/lists/m ... ts;#242186 Basically, the problem is that the older nVidia driver is doing a busy wait when waiting for v-sync. The new driver uses a different method that's not processor intensive. Now, when watching HD content, my x.org hovers at around 7% cpu load. |
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| Author: | thornsoft [ Mon Jan 15, 2007 9:27 pm ] |
| Post subject: | |
It sounds great, but that nvidia thread scares the crap out of me! Is there a way to do it without recompiling against the kernel sources? And is there a reason that the newer nvidia drivers aren't already in R5E50? It sure would be nice to have a 7% x.org.... |
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| Author: | MrFahrenheit [ Tue Jan 16, 2007 10:20 am ] |
| Post subject: | |
Downloading the kernel source is the only way I found to do it. If you find a faster way, please post it. I didn't really have a choice though since I couldn't actually watch HD content unless I made this change. This would probably be a case of "if it ain't broke, don't fix it." If you can watch HD content without problems, then why bother trying this? |
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| Author: | ethernut [ Tue Jan 16, 2007 11:16 am ] |
| Post subject: | |
MrFahrenheit, if you don't mind me asking, what deinterlacing method are you using for HD? |
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| Author: | thornsoft [ Tue Jan 16, 2007 1:30 pm ] |
| Post subject: | |
MrFahrenheit wrote: If you can watch HD content without problems, then why bother trying this?
I have pauses once in a while, especially when recording on all 3 tuners. I'd like to be able to run commflag. Lower CPU may translate into less heat and noise. Just a few. But none that make me want to risk having to re-build, and spend a day getting it all running again. |
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| Author: | MrFahrenheit [ Tue Jan 16, 2007 1:58 pm ] |
| Post subject: | |
I found that using Kernel with libmpeg2 currently looks the best to me. All de-interlace methods had performance problems. Even turning de-interlace off, I had the same issue. |
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| Author: | lantz [ Tue Jan 16, 2007 4:28 pm ] |
| Post subject: | |
thornsoft wrote: It sounds great, but that nvidia thread scares the crap out of me!
Is there a way to do it without recompiling against the kernel sources? And is there a reason that the newer nvidia drivers aren't already in R5E50? It sure would be nice to have a 7% x.org.... I did the upgrade and it's really not very hard, even if it looks kinda scary. |
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| Author: | slowtolearn [ Tue Jan 16, 2007 8:21 pm ] |
| Post subject: | |
MrFahrenheit wrote: I found that using Kernel with libmpeg2 currently looks the best to me. All de-interlace methods had performance problems. Even turning de-interlace off, I had the same issue.
MrFahrenheit, what are your system specs? I need to get back to testing a new frontend (Asus M2NPV-VM, A64 3200+) and I don't believe I've tried that combination yet... Thanks |
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| Author: | MrFahrenheit [ Tue Jan 16, 2007 9:09 pm ] |
| Post subject: | |
I'm running a slightly modified version of a dragon v1.1. Same Mobo, proc, vid card, ram, soundcard, and tuner card. |
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| Author: | slowtolearn [ Tue Jan 16, 2007 9:30 pm ] |
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MrFahrenheit wrote: I'm running a slightly modified version of a dragon v1.1. Same Mobo, proc, vid card, ram, soundcard, and tuner card.
Many thanks, I will be sure to give kernel/libmpeg2 a try. |
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| Author: | thornsoft [ Wed Jan 24, 2007 7:02 pm ] |
| Post subject: | |
It's an awesome fix - thanks Farenheight! My xorg is about 10% now, instead of 45. |
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| Author: | williammanda [ Tue Feb 06, 2007 9:53 pm ] |
| Post subject: | |
I'm having the same issue (video and sound stopping and starting every 1- 3 seconds during HDTV). I added the statement to my xorg.conf and Nvidia drivers are 1.0.7184. I cannot see the usage during Mythtv but when I have a browser open to Bloackbuster.com is can see it then and it is running up to 90% when I scroll up / down the page. PIV 2.8Ghz 1 G ram. Thanks |
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| Author: | thornsoft [ Wed Feb 07, 2007 9:03 am ] |
| Post subject: | |
williammanda wrote: I cannot see the usage during Mythtv
Alt+X should open a floating X window, which you should be able to see on top of the playback. Or, hop on another PC and telnet/ssh over to the mythbox. |
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| Author: | lantz [ Wed Feb 07, 2007 12:08 pm ] |
| Post subject: | |
williammanda wrote: I'm having the same issue (video and sound stopping and starting every 1- 3 seconds during HDTV). I added the statement to my xorg.conf and Nvidia drivers are 1.0.7184. I cannot see the usage during Mythtv but when I have a browser open to Bloackbuster.com is can see it then and it is running up to 90% when I scroll up / down the page.
PIV 2.8Ghz 1 G ram. Thanks As I understand, this option only works in conjunction with the 9xxx drivers. |
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| Author: | williammanda [ Wed Feb 07, 2007 1:41 pm ] |
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I mis-read the posts for the version (thought the version was less than 1). I will try to upgrade the drivers. Thanks |
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