Ok, - When I'm watching tv, and everything seems fine, top says the cpu is 90% idle, and mythfrontend takes at most 2.0%. When the stuttering starts, idle drops down to 60%, and XFree86 goes up to 96% cpu usage.
When the program is up but the tv picture is fine, then XFree takes about 20% of the CPU. My system is a 2 GHz athlon, using tv-out on the hauppauge 350 using the ivtvdev_drv.o that is in the ivtv-0.2.0-rc3f/utils directory. When the stuttering starts, XFree86 takes up approx 96% of the cpu Also, I should have stated earlier this stuttering problem only came up when I started using ivtv-0.2.0, it doesn't happen with ivtv-0.1.10-pre2-ck100z. Mike On Wed, 2 Feb 2005, Dave Meador wrote: > Can you open a telnet/ssh window from another terminal and run "top". Watch > the %idle value. If this is pegged at 100%, then your problem is that > mythtv is taking up too many CPU cycles. On my system, I can record and > playback simultaneously with around 10% utilization -- that's 90% idle for > clarification. > > * what is your processor speed? > * what is your video card hardware/driver? > * how much system memory do you have? > * Do you have a hardware-mpeg-tv-capture? > > Things to keep in mind: > * On slow hardware, e.g. less than 1Ghz processor if you do not have video > acceleration, you will likely will not have enough resources to record and > playback high quality video. You may need to lower your quality setting to > reduce CPU utilization to a level less than 100%. > > * If you do have video hardware capable of acceleration (mpeg2), then you > must configure/compile it to load and work with mythtv playback (for example > nvidia-XvMC, or VIA vld-XvMC). > > --Dave > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:ivtv-devel- > > [EMAIL PROTECTED] On Behalf Of Michael Papazoglou > > Sent: Wednesday, February 02, 2005 3:11 PM > > To: [email protected] > > Subject: RE: [ivtv-devel] mythtv stutter with program guide > > > > > > Ok, re-nicing mythfrontend fixed the stutter problem, BUT, now > > I can't change channels (using the program guide or typing in > > a new channel). Again nothing in the logs... > > > > So, without renicing, I get a stuttering program guide but I can > > change channels, and with renicing, i get nice smooth playback when > > the program guide is up, but I can't change channels! > > > > Mike > > > > On Wed, 2 Feb 2005, Dave Meador wrote: > > > > > Hi Mike, > > > > > > I had a similar problem and was able to help remedy this by launching > > > mythtvfrontend with the following command: > > > > > > nice -n -15 mythtvfrontend > > > > > > That forces the front end task to run at a very high priority. It will > > > consume only as many cpu cycles as necessary to maintain a smooth image, > > and > > > then yield the remaining time after it blocks -- at that point other > > > non-realtime requests will be serviced. The database requests and other > > > requests will now get executed at a lower priority which should prevent > > your > > > video playback from stuttering. That worked for me since I run the > > backend, > > > frontend, and the database server on the same machine (I have a EPIA-M > > 1Ghz > > > box). > > > > > > Hope that helps, > > > --Dave > > > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting > Tool for open source databases. Create drag-&-drop reports. Save time > by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. > Download a FREE copy at http://www.intelliview.com/go/osdn_nl > _______________________________________________ > ivtv-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ivtv-devel > ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ ivtv-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ivtv-devel
