> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jelle > Sent: 02 December 2006 21:57 > To: Discussion list for development of the IVTV driver > Subject: Re: [ivtv-devel] 50% CPU usage while using PVR350 > tv-out and mythtv > > Hans Verkuil wrote: > > On Saturday 02 December 2006 06:55, Petter Gundersen wrote: > >> I have some info about the issue with high cpu usage while > using the > >> pvr350 tv-out and mythtv. > >> > >> Earlier reports here: > >> http://www.gossamer-threads.com/lists/ivtv/users/32506#32506 > >> http://www.gossamer-threads.com/lists/ivtv/users/32807#32807 > >> > >> This started happening between ivtv 0.7.0 and 0.7.1, more > precisely > >> changeset 3406 "Added workaround for the DMA 0x0000000b error...". > >> > >> I'm not sure if this is a ivtv bug, a myth bug, or if some of my > >> kernel settings are messing things up. Since I never have had any > >> problems with the DMA 0x0000000b error, I use the attached > patch with > >> ivtv 0.8.1, and my cpu usage is back to it's normal ~1%. The patch > >> reverts changeset 3413, 3407 and parts of 3400. > >> > >> Regards, > >> Petter > > > > Which process is it that takes so much CPU time? > > For me it was the X server itself that used 2x-3x as much CPU > without the patch. > > Jelle.
I would have guessed at that being the case. It's probably actually time spent waiting in the kernel rather than doing any real work. At least that was the case before I managed to reduce the cpu usage to current levels. John _______________________________________________ ivtv-devel mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-devel
