Messages in this thread |  | | Date | Thu, 01 Feb 2007 18:59:53 -0600 | From | Robert Hancock <> | Subject | Re: smp and irq conflict |
| |
Lapo TIN wrote: > I need to capture at 25 frame per second from each channel... > So 25 x 8 total frames per second on the pci. > > > So do you think I have to change the motherboard ? > What is important ? the chipset ? is there specification I need ?
What resolution are you using? 720x480 with 24 bits per pixel and 25fps will use about 25MB/sec on the PCI bus, there is no way you can keep up with 8 channels running on a standard 32-bit 33MHz PCI bus which can only transfer 133 MB/sec at most. If you need this much transfer rate, you likely need PCI Express or PCI-X capture cards or at least a motherboard which has multiple PCI buses (which most desktop boards don't typically have).
You may be able to reduce the resolution and/or frame rate in order to allow the PCI bus to cope. Also, do you have enough CPU and disk speed in order to cope with all these streams?
-- Robert Hancock Saskatoon, SK, Canada To email, remove "nospam" from hancockr@nospamshaw.ca Home Page: http://www.roberthancock.com/
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |