[mythtv-users] ringbuf in memory?
scott at webhounds.net
Fri Dec 19 00:23:53 UTC 2008
Bill Williamson wrote:
> On Fri, Dec 19, 2008 at 8:26 AM, Scott Harris <scott at webhounds.net
> <mailto:scott at webhounds.net>> wrote:
> Has anyone considered, or even tried adding a lot of ram to their
> and using it for the ringbuf location? I mean something like 64Gb
> of ram.
> For SD recording that should provide adequate space for the
> ringbuf I think.
> Just wondering.....
> -There's not a traditional ringbuffer in myth since the livetv switch
> was made (.19?)
> -Even when there was a ringbuffer, it was never a bottleneck AFAIK.
> -Again, back when there was a ringbuffer I believe its default was
> somewhere in the 1-4gb size.
> What problem is this idea trying to solve? Having 64Gb of ram might
> go really well if you're doing a LOT of simultanious HD recording if
> you tune the kernel to be REALLY agressive with its disk caching, but
> otherwise it woudln't do anything whatsoever.
While there hasn't been the traditional ringbuffer there is still the
myth still writes the live tv files to. I was assuming that this was
where the "ringbuf" setting would write. Since for live tv it is both
and writing the disk at the same time I was hoping that writing to something
faster than a disk would all the read/write to happen a lot faster.
But the above is a *lot* of assuming, and we all know about assuming....
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