On 24 Mar 2008 at 23:27, Tom Metro wrote:
> [60.710413] ivtv0: Unreasonably low latency timer, setting to 64 (was 32) > [61.096095] PCI: Setting latency timer of device 0000:00:06.0 to 64 > [67.561088] ivtv1: Unreasonably low latency timer, setting to 64 (was 32) Those are some of the errors, but those are fairly common on many linux machines I've seen, can't seem to find how I came up with this, started with some postings to the ivtv lists. Anyhow the mythtv wiki has a good entry on this http://www.mythtv.org/wiki/index.php/PCI_Latency > I looked into this back when I first deployed the system in the Fall of > 2006, and I don't recall what I found, but I'm pretty sure I never > implemented any fixes. It helps! I was getting several lockups a week until I implemented this. > It locks up some of the time when I transcode using mencoder, and once > when using ffmpeg. I used mencoder to transcode only rarely, and stopped > using it because of this. Most of those things have 2 things in common, high cpu and high disk usage, adjusting the pci latency helps with the latter. > > ...and what exactly do the lockups look like? > > Black screen or normal looking but frozen screen. Unresponsive to > network connections or existing ssh connections. Yup, that about sums up the problem, it was most noticable when multiple concurrent recordings were set to go off. > > My Sempron has a VIA chipset. I'm also using a VIA based system Anyhow, here's the line from my /etc/init.d/rc.local ### added Sep 25/07 to allow more pci throughput from multiple tv tuner cards to the hard drives setpci -v -s 00:07.1 latency_timer=[b0] -- Harondel J. Sibble Sibble Computer Consulting Creating solutions for the small business and home computer user. [EMAIL PROTECTED] (use pgp keyid 0x3AD5C11D) http://www.pdscc.com (604) 739-3709 (voice/fax) (604) 686-2253 (pager) ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Mvpmc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mvpmc-users mvpmc wiki: http://mvpmc.wikispaces.com/
