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> Windows > IEEE 1394 |
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Dr.X 15 Jan 2005, 13:00
Has anyone here tried comunicating with IEEE 1394 (firewire) devices yet?
thanks. -Dr.X |
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15 Jan 2005, 13:00 |
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f0dder 15 Jan 2005, 15:26
Nope, only used one - interesting to see that FireWire at 400mbit beats USB2 at 480mbit.
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15 Jan 2005, 15:26 |
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comrade 15 Jan 2005, 18:13
How is that possible?
Its like saying your car at 40 km/h is faster than mine at 48 km/h. |
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15 Jan 2005, 18:13 |
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Dr.X 16 Jan 2005, 02:47
Quote:
That's _very_ interesting. Especially since I just tested copying a 10 gig file (on the same drive, just from one folder to another) and it says 12 min. remaining. So it would seem that the firewire is faster than my ata drives. I just wanted to see if I could interface with my firewire digital video tape recorder. I have a video editing software that is capable of it. So I know it's not impossible. There's probably some complex api. ack! 
-Dr.X |
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16 Jan 2005, 02:47 |
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f0dder 16 Jan 2005, 11:25
Quote:
No no, I copied from the external HDD to one of my internal drives! Copying from one location to another on the same drive (or other partition on the same drive) is going to be slow, and really has nothing to do with 1394 vs USB2 vs ATA. Quote:
Humm, you want to do it programatically? I don't know how this works; either there's some proprietary driver, otherwise it's probably just one of the win32 media/capture APIs, which isn't going to care much which source you're using. |
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16 Jan 2005, 11:25 |
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scientica 16 Jan 2005, 12:28
/me get's a thought about Mbps <=> MHz, and thinks, can a 3GHz CPU be "beaten" by a CPU 2.2GHz... that sort of makes IEEE1394 > USB2 beeing fully reasonable (just plain figures doesn't give the truth about performance)
Quote: For USB2, it said 18 minutes left. For 1394, it was 10 minutes. Interesting, huh? It's not a cache issue, as the drive was de+re-attached to switch connection type. Of course it might be the performance of my USB2 controller (add-on card) or firewire controller (SB Audigy), or the chips in the harddisk case. well, that doesn't neccesary mean thigns aren't chached, but as I don't know jack s*t how the chache/buffer system works in windows I can't say if un+re-mounting will clear the cache(s). Also, as you say, you x-fered 14GB in "small chunks" - that could also explain it, it seems USB2 has more overhead per file than IEEE1394, would be interresting if you could tar/(put them in a defalte archive) them to onebig 14GB file and xfer that. |
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16 Jan 2005, 12:28 |
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Dr.X 16 Jan 2005, 18:40
Quote:
You're right. I don't know what I was thinking. Yes, moving from one drive to another is faster. Quote:
I'll have to read up on that. I was hoping to get at the hardware level but I think even the media api's might help me to better understand it. -Dr.X |
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16 Jan 2005, 18:40 |
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