[mythtv-users] Overloaded system?
Brian Wood
beww at beww.org
Thu Mar 22 21:53:30 UTC 2007
On Mar 22, 2007, at 12:30 PM, Larry Sanderson wrote:
>
> My question: has anyone loaded up a similar system, and can the PCI
> bus handle
> 4 recordings sent to a PCI controller card, with a FE playing back
> another
> stream off the same controller?
I have a FE/BE system with 4 PVR-150s that can make 4 recordings
while playing back another. I am using a RAID0 array for disk
storage, which may make a difference, though it does all have to go
through the same PCI buss.
>
> I wasn't really worried until I stumbled on this link:
> http://www.mythtv.org/wiki/index.php/PCI_Latency
>
I happen to have written that particular entry. The information in
the "summary" section was valid when I had 3 PVR-150s and a VIA-based
mobo. Attempting to go to 4 PVRs at once didn't work too well, but
replacing the mobo with an nForce-based Asus board worked better,
thus 4 recordings are possible, but maybe not with the VIA board, and
I can't say how much the RAID0 is helping because I've never tried it
with just a single drive.
I will say that I have never used all 4 PVRs at once except for
testing purposes. The sort of stuff I record gets repeated enough
that 3 PVRs would be more than adequate, two for recording (one
satellite and one cable) and the third for use as live TV (rare) or PiP.
Your plan to just see what happens seems like the best approach.
Brian Wood
beww at beww.org
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