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MediaPortal 1
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Mediaportal 1.14Pre: TV-Server always using a new TV-Card when re-use is possible
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<blockquote data-quote="mm1352000" data-source="post: 1180288" data-attributes="member: 82144"><p>Are you overclocking the CPU?</p><p></p><p></p><p>This bandwidth is more than sufficient. Approximately 16 M. bit/s (= 2 M. Byte/s) would be enough for one HD stream. However, the bandwidth is not the only factor to consider. You should also consider the latency - both absolute latency value, and latency variability. If the latency is consistently high it can be a problem; if there are latency "spikes" (short periods of time when the latency is very high) it can be a problem.</p><p></p><p>In other words, only looking at the bandwidth is like looking at half the picture. You need to look at the latency as well to see the full picture.</p><p></p><p>Earlier you said:</p><p></p><p>It seems like you didn't understand me.</p><p></p><p>I was talking about <a href="https://en.wikipedia.org/wiki/Deferred_Procedure_Call" target="_blank">DPC latency</a>, not storage access latency.</p><p>I was talking about all drivers, not just the tuner driver(s).</p><p></p><p><strong>Any driver can cause DPC latency issues. </strong>Often it seems to be an NIC (wired or wireless) or USB controller driver that causes problems, not a tuner driver.</p><p></p><p>So, please use <a href="http://www.resplendence.com/latencymon" target="_blank">LatencyMon </a>to check the DPC latency <strong>when the discontinuities are occurring</strong>.</p></blockquote><p></p>
[QUOTE="mm1352000, post: 1180288, member: 82144"] Are you overclocking the CPU? This bandwidth is more than sufficient. Approximately 16 M. bit/s (= 2 M. Byte/s) would be enough for one HD stream. However, the bandwidth is not the only factor to consider. You should also consider the latency - both absolute latency value, and latency variability. If the latency is consistently high it can be a problem; if there are latency "spikes" (short periods of time when the latency is very high) it can be a problem. In other words, only looking at the bandwidth is like looking at half the picture. You need to look at the latency as well to see the full picture. Earlier you said: It seems like you didn't understand me. I was talking about [URL='https://en.wikipedia.org/wiki/Deferred_Procedure_Call']DPC latency[/URL], not storage access latency. I was talking about all drivers, not just the tuner driver(s). [B]Any driver can cause DPC latency issues. [/B]Often it seems to be an NIC (wired or wireless) or USB controller driver that causes problems, not a tuner driver. So, please use [URL='http://www.resplendence.com/latencymon']LatencyMon [/URL]to check the DPC latency [B]when the discontinuities are occurring[/B]. [/QUOTE]
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