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On 3/10/2012 16:51, Joe Nyland wrote:
<blockquote cite="mid:0ABDA95F-B075-4158-B5DC-19DDE9F345B2@me.com"
type="cite">Xeon E31230 3.2 GHz (Quad core +HT) CPU - 4 cores
assigned to MythTV backend server</blockquote>
<br>
So that means MythTV has full access to the CPU?<br>
<br>
<blockquote cite="mid:0ABDA95F-B075-4158-B5DC-19DDE9F345B2@me.com"
type="cite">
<div>Recordings stored on 3 1TB Seagate drives in md RAID5</div>
</blockquote>
<br>
Do you have your database on this same array? What filesystem are
you using?<br>
<br>
<blockquote cite="mid:0ABDA95F-B075-4158-B5DC-19DDE9F345B2@me.com"
type="cite">
<div>
<ul class="MailOutline">
<li>CPU usage is around 50% on my primary frontend when
playing back recordings - I'm not sure this is all
MythFrontend, but it proves the point that the CPU is not
exhausted.</li>
</ul>
</div>
</blockquote>
<br>
On the contrary. It means you are using one full core of that
2.4GHz Core 2 Duo, and hitting a wall because something is single
threaded. On Linux, that should be sufficient for CABAC H264
content at around 12-14Mbps, which is rather high for broadcast HD,
and well beyond what you should be seeing for SD video. Considering
you are running the same version of MythTV and OSX on the iMac, is
it having similar problems? What is the CPU usage during playback?<br>
<br>
<blockquote cite="mid:0ABDA95F-B075-4158-B5DC-19DDE9F345B2@me.com"
type="cite">
<div>
<ul class="MailOutline">
<li>RAM usage hovers around 2GB mark on my primary frontend.</li>
</ul>
</div>
</blockquote>
<br>
Well that simply doesn't sound right. Even at 1080p and an artwork
intensive theme, you shouldn't be hitting half that. Are you
reading the resource usage, or the virtual memory allocation?<br>
<br>
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