[mythtv-users] Western Digital Red for Myth

Mike Carron jmcarron at starstream.net
Mon Aug 26 02:45:32 UTC 2013



-----Original Message-----
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Raymond Wagner
Sent: Sunday, August 25, 2013 6:15 AM
To: Discussion about MythTV
Subject: Re: [mythtv-users] Western Digital Red for Myth

On 8/25/2013 1:05 AM, Mike Carron wrote:
>
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Stephen 
> Worthington
> Sent: Saturday, August 24, 2013 6:08 PM
> To: Discussion about MythTV
> Subject: Re: [mythtv-users] Western Digital Red for Myth
>
> On Sat, 24 Aug 2013 14:34:22 -0500, you wrote:
>
>> On 08/24/2013 12:44 PM, Stephen Worthington wrote:
>>> On Sat, 24 Aug 2013 12:43:25 -0400, you wrote:
>> ...
>>> I have not done any calculations to see what that limit would mean, 
>>> for my usage of a MythTV drive, but 55 Tbytes does not seem too 
>>> small a number.
>> ...
>>
>> *Very* roughly: 55,000,000,000,000 / 6,000,000,000 / 365 = 25 1 Hour 
>> HD
> Recordings/Day.
>> Then divide 25 by 2 for commercial flagging and by 2 again if you 
>> actually want to watch the recording. ~~6 shows/day?  Hmmm, left out 
>> some
> number of preview generations/views.
>
> And you can leave out the commercial flagging from that if you have a 
> fast CPU like I have on the backend that runs the flagging in realtime 
> out of the disk buffers.
>
> //
> What do you consider a fast CPU? My BE is currently running on a Core 
> i7 930 with 12gb of RAM and it finishes the flagging of a 3 hour show 
> about 2 hours after the show is finished.

That sounds more like you have several recordings going on, and have MythTV
configured to only run one job at a time.


Correct. I had left the number of jobs and CPU usage at the defaults. I
changed them to 4 jobs and Medium CPU usage and it appears to have improved
things greatly.

Thanks for the good info.
mike




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