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MediaPortal 1
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Many discontinuities when simultaneously recording from 3 tuners
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<blockquote data-quote="rsenden" data-source="post: 1110859" data-attributes="member: 24295"><p>Thanks everyone for the suggestions. Last weekend I did some more tests; to summarize these and earlier tests:</p><ul> <li data-xf-list-type="ul">Mac Mini, Windows 7, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners</li> <li data-xf-list-type="ul">Mac Mini, Windows 8, both tuner devices connected to USB 3.0 ports: BSOD when trying to timeshift/record</li> <li data-xf-list-type="ul">Mac Mini, Windows 8.1, both tuner devices connected to USB 3.0 ports: BSOD when trying to timeshift/record</li> <li data-xf-list-type="ul">Mac Mini, OpenElec, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners</li> <li data-xf-list-type="ul">HP Laptop, Windows 7, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners</li> <li data-xf-list-type="ul">HP Laptop, Windows 7, both tuner devices connected to USB 2.0 ports: No discontinuities<br /> </li> <li data-xf-list-type="ul">Mac Mini, Windows 7, both tuner devices connected to USB 3.0 ports, but without the Intel xHCI drivers installed (which effectively attaches the ports to a USB 2.0 controller): No discontinuities</li> <li data-xf-list-type="ul">I also noticed interference between my USB 3.0 HDD cable and the tuner devices, even when only one tuner is used (discontinuities and strongly varying tuner signal strength when USB 3.0 cable/HDD is near tuner devices). The discontinuity problem when recording from all 3 tuners is however also present when the USB 3.0 HDD is disconnected.</li> </ul><p>So the issues are definitely related to using the tuners with a USB 3.0 controller, independent of the OS used (so I guess I can rule out driver issues). As a work-around, I now have the following setup:</p><ul> <li data-xf-list-type="ul">Mac Mini, Windows 7, no xHCI drivers installed, both tuner devices (and wireless keyboard/mouse receiver) connected to the USB 3.0 ports, routed to USB 2.0 controller.</li> <li data-xf-list-type="ul">USB 3.0 HDD moved to NAS (connected to Mac Mini via Gbit LAN).</li> <li data-xf-list-type="ul">Recording folder for TV Server moved to the USB HDD on the NAS.</li> </ul><p>Interestingly, on the Mac Mini I now get much better performance from the USB HDD than when it was connected directly to the Mac Mini (transfer speed of around 100MB/s instead of 30-40MB/s). With the timeshift folder pointing to the NAS, I see no discontinuities in TV Server Setup/Manual Control when simultaneuosly timeshifting on all three tuners.</p></blockquote><p></p>
[QUOTE="rsenden, post: 1110859, member: 24295"] Thanks everyone for the suggestions. Last weekend I did some more tests; to summarize these and earlier tests: [LIST] [*]Mac Mini, Windows 7, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners [*]Mac Mini, Windows 8, both tuner devices connected to USB 3.0 ports: BSOD when trying to timeshift/record [*]Mac Mini, Windows 8.1, both tuner devices connected to USB 3.0 ports: BSOD when trying to timeshift/record [*]Mac Mini, OpenElec, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners [*]HP Laptop, Windows 7, both tuner devices connected to USB 3.0 ports: Discontinuities when recording from all three tuners [*]HP Laptop, Windows 7, both tuner devices connected to USB 2.0 ports: No discontinuities [*]Mac Mini, Windows 7, both tuner devices connected to USB 3.0 ports, but without the Intel xHCI drivers installed (which effectively attaches the ports to a USB 2.0 controller): No discontinuities [*]I also noticed interference between my USB 3.0 HDD cable and the tuner devices, even when only one tuner is used (discontinuities and strongly varying tuner signal strength when USB 3.0 cable/HDD is near tuner devices). The discontinuity problem when recording from all 3 tuners is however also present when the USB 3.0 HDD is disconnected. [/LIST] So the issues are definitely related to using the tuners with a USB 3.0 controller, independent of the OS used (so I guess I can rule out driver issues). As a work-around, I now have the following setup: [LIST] [*]Mac Mini, Windows 7, no xHCI drivers installed, both tuner devices (and wireless keyboard/mouse receiver) connected to the USB 3.0 ports, routed to USB 2.0 controller. [*]USB 3.0 HDD moved to NAS (connected to Mac Mini via Gbit LAN). [*]Recording folder for TV Server moved to the USB HDD on the NAS. [/LIST] Interestingly, on the Mac Mini I now get much better performance from the USB HDD than when it was connected directly to the Mac Mini (transfer speed of around 100MB/s instead of 30-40MB/s). With the timeshift folder pointing to the NAS, I see no discontinuities in TV Server Setup/Manual Control when simultaneuosly timeshifting on all three tuners. [/QUOTE]
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