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MediaPortal 1
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Television (MyTV frontend and TV-Server)
LiveTV Records Causing 100% Drive Activity
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<blockquote data-quote="CyberSimian" data-source="post: 1276066" data-attributes="member: 141969"><p>The live-TV buffer is not persistent, and (sadly) cannot be made persistent in MP. This means that when you are watching live TV, you can start recording only from the point at which you press the RECORD button -- you cannot capture the existing contents of the live-TV buffer. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /></p><p></p><p>So, having said that, if you have enough RAM, you could use a RAM disk. E.g. if you have 16 GB of RAM, you could devote 8 GB to the RAM disk. I think that there is a page in the Wiki describing how to set this up (I have not tried this myself).</p><p></p><p>If you have 8 GB RAM or less, a disk would be preferred. Using an internal disk has the advantage that you can use the full bandwidth of the PCI bus, and so would be limited only by the speed of the disk. This might be significant if you record multiple concurrent programmes. Example: on occasion I record 8-9 programmes concurrently <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" />. (Broadcasters always seem to schedule their best programmes for the same time of day, typically 19:00-22:00hrs.)</p><p></p><p>An external disk would likely be USB, but the USB bus is not as fast as the PCI bus. A SATA3 disk has an interface speed of 6 Gbit/sec (= 750 MByte/sec), whereas the USB2 bus is 480 MBit/sec (= 60 MByte/sec). You might get around 100 MByte/sec on sustained writes using a fast mechanical disk, and faster speeds from an SSD.</p><p></p><p>USB3 would be faster, especially if you can disentangle the confusing nomenclature used for the newer versions of USB (3.0, 3.1, 3.2, ...).</p><p></p><p>I personally would not use a network-connected disk for the live-TV buffer or for the recorded-TV folder (it introduces more places where things can go wrong), but a network-connected disk is fine for playback. I use a NAS to hold the bulk of my recordings library, and once per week move files from the recordings folder to the NAS.</p><p></p><p>-- from CyberSimian in the UK</p></blockquote><p></p>
[QUOTE="CyberSimian, post: 1276066, member: 141969"] The live-TV buffer is not persistent, and (sadly) cannot be made persistent in MP. This means that when you are watching live TV, you can start recording only from the point at which you press the RECORD button -- you cannot capture the existing contents of the live-TV buffer. :( So, having said that, if you have enough RAM, you could use a RAM disk. E.g. if you have 16 GB of RAM, you could devote 8 GB to the RAM disk. I think that there is a page in the Wiki describing how to set this up (I have not tried this myself). If you have 8 GB RAM or less, a disk would be preferred. Using an internal disk has the advantage that you can use the full bandwidth of the PCI bus, and so would be limited only by the speed of the disk. This might be significant if you record multiple concurrent programmes. Example: on occasion I record 8-9 programmes concurrently :eek:. (Broadcasters always seem to schedule their best programmes for the same time of day, typically 19:00-22:00hrs.) An external disk would likely be USB, but the USB bus is not as fast as the PCI bus. A SATA3 disk has an interface speed of 6 Gbit/sec (= 750 MByte/sec), whereas the USB2 bus is 480 MBit/sec (= 60 MByte/sec). You might get around 100 MByte/sec on sustained writes using a fast mechanical disk, and faster speeds from an SSD. USB3 would be faster, especially if you can disentangle the confusing nomenclature used for the newer versions of USB (3.0, 3.1, 3.2, ...). I personally would not use a network-connected disk for the live-TV buffer or for the recorded-TV folder (it introduces more places where things can go wrong), but a network-connected disk is fine for playback. I use a NAS to hold the bulk of my recordings library, and once per week move files from the recordings folder to the NAS. -- from CyberSimian in the UK [/QUOTE]
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