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MediaPortal 1
Support
General Support
Many discontinuities when simultaneously recording from 3 tuners
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<blockquote data-quote="RonD" data-source="post: 1109232" data-attributes="member: 117536"><p>you could do a quick disk copy test to see basic USB/disk BW. I did copy/paste of a large (6GB) recorded tv video. For win7 use TaskManager > ResourceMonitor and select disk tab. On my Ivybridge i3-cpu laptop I see the following for a WD-elements external USB3 disk drive</p><p></p><p>USB3-port, RD+WR = 37+37 MB/s = 74 MB/s = 592 mbps, probably 2.5 inch "laptop drive" limited</p><p>USB2-port, RD+WR = 14+14 MB/s = 28 MB/s = 224 mbps, mainly usb2 overhead slowdown?</p><p></p><p>No idea how to really compare disk vs tuner USB performance. What size USB "data packets" do disk/tuner use, driver overhead, USB command latency overheads, etc? But my USB2 port doesn't run 480 mbps even with just disk traffic.</p><p></p><p>To see USB port connections, you could use DeviceManager > View > Devices by Connection. look under ACPI x64 based PC</p></blockquote><p></p>
[QUOTE="RonD, post: 1109232, member: 117536"] you could do a quick disk copy test to see basic USB/disk BW. I did copy/paste of a large (6GB) recorded tv video. For win7 use TaskManager > ResourceMonitor and select disk tab. On my Ivybridge i3-cpu laptop I see the following for a WD-elements external USB3 disk drive USB3-port, RD+WR = 37+37 MB/s = 74 MB/s = 592 mbps, probably 2.5 inch "laptop drive" limited USB2-port, RD+WR = 14+14 MB/s = 28 MB/s = 224 mbps, mainly usb2 overhead slowdown? No idea how to really compare disk vs tuner USB performance. What size USB "data packets" do disk/tuner use, driver overhead, USB command latency overheads, etc? But my USB2 port doesn't run 480 mbps even with just disk traffic. To see USB port connections, you could use DeviceManager > View > Devices by Connection. look under ACPI x64 based PC [/QUOTE]
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MediaPortal 1
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General Support
Many discontinuities when simultaneously recording from 3 tuners
Contact us
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