well, that's a heck of an old version of ivtv. I have a an SMT/SMP enabled kernel with hyperthreading and a dual Xeon 2.5g board on the production machine (the one with the 250, not the 500) and things generally work for nearly a week before I need to restart. (Some weird sound errors of late.. Maybe I should update that one to a newer ivtv than 0.3.2t)
Thanks, Jason --- "D. Hugh Redelmeier" <[EMAIL PROTECTED]> wrote: > | From: Paul Check <[EMAIL PROTECTED]> > > | I'm getting DMA erros on my system with various > versions of ivtv and firmware. > | Currently I'm working with version 0.1.9 of the > ivtv driver with firmware > | pvr250_18_22037.exe (0.2.0rc3g gives me headaches > with ivtv-fb). All the > | problems I've had with ivtv (any version) seem to > relate to DMA errors. I'm > | running 2.4.26 on a dual Xeon (HT enabled too) > Supermicro X5DA8 motherboard > | with seagate scsi disks, all firmware up to date. > > WARNING: PURE SUPPOSITION. > > I've seen it suggested that ivtv didn't work with > preemption enabled. > > > <http://www.mail-archive.com/[email protected]/msg01614.html> > > Jim Reese wrote: > have had no trouble with both Fedora 2 and 3 as > long as you > recompile the kernel without REGPARM, 4KSTACKS and > pre-emption. > > I doubt that REGPARM is a problem, but am not sure. > There was a > report on the list that REGPARM was not a problem. > > 4KSTACKS is a problem, but several patches > (including one from me) > claim to solve that problem. > > That leaves pre-emption: is it a problem? > > If this is in fact the case, it is very likely that > ivtv would not > work with HT enabled and used by an SMP kernel. The > reason is that > preemption takes advantage of the same locking > mechanisms as SMP, and > HT is a kind of SMP. > > This would mean that ivtv probably does not have > sufficient locking > protecting resources that might be shared between > different threads of > control in kernel code. > > If you run a non-SMP kernel without preemption > enabled, do you get the > same problem? You may have to configure and build > your own kernel to > answer that question. > > Hugh Redelmeier > [EMAIL PROTECTED] voice: +1 416 482-8253 > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT > Products from real users. > Discover which products truly live up to the hype. > Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > ivtv-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/ivtv-devel > ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ ivtv-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ivtv-devel
