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I am attempting to build a 16-camera surveillance system with 8 2-channel multiplexed frame-grabber channels each.. Each channel is read at at about 5 frames per second, the image converted into JPEG and saved, and an MPEG-1 clip made at the same time (lots of storage, yes). I typically use a small IDE drive for my OS, and a 2-drive RAID-0 built with WD120JB 8-MB cache drives. I have learned the hard way that regular IDE RAID controllers of the Promise type loose interrupts and result in disk corruption, whereas the 3-ware (with its SCSI-like hardware) are reliable. There is a LOT of processing and storage going on here, and I have had good luck on my 8-camera systems using a GigaByte GA7VAXP with AMD2400XP processors, but average about 10% CPU utilization for each active (detected motion, now capturing and encoding) channel. So when all 8 cameras are active, I sustain about 80% or more total CPU loading. Typically never more than 5 are active at the same time. My question is how can I scale up to get 16 camera channels? I use Debian Woody 2.4.19 with Reiserfs (good job Hans!). The fastest Athlon that I can get is a AMD3200 XP with 400 Mhz FSB. On the other hand, I can use the Tyan 2466 Dual Athlon board, but MP processors only have a 266 Mhz FSB and the fastest speed is the 2800 MP. So, given the nature of the CPU and data intensive application, which is the faster platform: a slower 2800/266 MHZ FSB dual processor or a single 3200/400 MHZ FSB processor? All suggestions and analysis welcomed. Joe - 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/ | ||||||||||||
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