[mythtv-users] Re: Minimum memory for myth system
iantri at gmail.com
Tue Jun 14 18:33:10 UTC 2005
Hi. I have a Celeron 2.4ghz machine, 1 PVR-250, 1 PVR-350 (using
output), 256mb RAM.
In my experience, it's not enough.
If you have satellite (or digital cable) and a large channel list,
browsing the EPG is slooow.. and using the 'find other airtimes'
function can cause the frontend to become unresponsive for minutes
while mysql thrashes..
Also, mythfilldatabase (and the resulting MySQL inserts) consume so
much memory that it starts swapping like crazy and video playback
(PVR-350 output.. I assume it would be totally unworkably slow
otherwise :/) will bog down if you try and do it at the same time.
Note though, that programs being recorded are never disturbed by and
of this because IIRC ivtv's encoder thread runs at real-time priority,
but video playback can bog down which is annoying, but not fatal.
Still, go for 512MB :)
On 6/14/05, Calvin Harrigan <charriglists at bellsouth.net> wrote:
> John Kuhn wrote:
> > I had a pvr350 in a 650mhz PIII system with 256 megs of ram.. and it
> > swapped alot but all in all never gave me problems.. no glitchs.. I
> > was however using the on board decoder..
> > --John
> >> I have a PVR350 and a pentium < 1Ghz with about 64Megs of memory
> >> running FC3. This is the second system that I have built and was
> >> trying to go 'ala cheapo. I am wondering if anyone knows what is the
> >> recommended minimum memory configuration of a myth system. I know
> >> that everything seems to work until I start watching live TV, that's
> >> when the system seems to want to randomly kill off processes and have
> >> lots of DMA errors. I am going to attempt to install 512Megs of
> >> memory in tonight and see if the problem goes away.
> >> 1. Anyone with similiar experiences?
> >> 2. Tips to reduce memory consumption would be welcomed.
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> Strange, I also have 256 Megs on a combination backend/frontend. I
> rarely ever touch the swap, typically it will use around 150 Megs of
> ram. It's an XP1800 with a pvr 250 for capture. Just seems that you
> shouldn't be swapping too much.
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iantri at gmail.com
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