I've had MythTV running for over a year now, and I'm very happy with it. I finally got rid of the ugly tower box sitting beside my TV and built a new system for myth MythBox. I had been running a P4 - 1.8 GHz with two PVR-250s and a pair of 120 GB drives (JBOD'd with LVM2). For the new system, I picked up an MSI nForce board (heard good things about nForce chipsets) and an Athlon 3000+ (Barton). The new machine is using one of the old 120 GB drives plus a 200 GB SATA, again using LVM2. Compiles are definitely MUCH faster on the new machine, but Myth is taking up WAY more resources.
Distro: Gentoo (optimized for athlon-xp) Myth Version: CVS 2004-Dec-11 Video Card: GeForce MX4000
On my old P4, recording two streams and watching one ran at about 50-60% cpu utilization. On the new AMD, the same thing takes 100%+. If I am watching something when there are two recordings, everything is extremely sluggish. I'm running the same Myth and IVTV code on the new one as I was on the old one (it was working, why screw with it?).
I would have thought even just by CPU frequency alone (2.1 GHz opposed to 1.8 GHz) it should be close, and frequency isn't everything...
Does anyone have any idea why this new (supposedly better) system behaves so much worse with Myth than the old one? The only thing I can think of is that the IO system on the nForce board is slow (maybe just the SATA?), since it seems like I'm iobound.
On the positive side, the SilverStone LC03 case is really nice, and looks cool in the stereo stand.
Any ideas/suggestions are appreciated...
-- Matt White [EMAIL PROTECTED] College of Arts and Science University of Saskatchewan
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