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Comment: Re:Why ext4 (Score 2, Informative) 221

by fnj (#49744175) Attached to: Linux 4.0 Has a File-System Corruption Problem, RAID Users Warned

Name one that actually boots the Linux kernel, and doesn't just run in user space. (Yes, I am a fan of ZFS, but not the Linux implementation.)

You really should get out more. ZFS on Linux is not to be confused with the ZFS Fuse project. You can boot from a ZoL filesystem. In general ZoL is about as stable, complete, and reliable as any ZFS.

Comment: Re:I don't understand.. (Score 1) 220

Speed of light in fibre is about two-thirds that of vacuum.

Direct-line distance from New York to Los Angeles: 3940 km
Speed of light in vacuo (= approximate speed of electromagnetic radiation in air): 300,000 km/s
Travel time: 13 ms

If speed in fiber is approximately 67%, then travel time is approximate 150%
Travel time: 20 mS
The route on the surface is very unlikely to be an exactly straight line, so figure maybe 25 ms

Half of the (round-trip) ping time is maybe 80 ms for a good fast end-to-end connection in practice. So we're talking less than 10% of that for difference between fiber and wireless, not taking into account the comparative number of repeaters in each case. Doesn't sound like this hare-brain idea would do anything significant for latency.

Comment: Re:Republicans and their unhealthy space obscessio (Score 3, Interesting) 109

by fnj (#49725661) Attached to: Robotic Space Plane Launches In Mystery Mission This Week

NASA had nothing to do with the microwave oven. Diathermy (therapeatic heating of human tissue by radio waves) was being used in 1930. Westinghouse demonstrated cooking food using short waves in the 1933 Worlds Fair. The cavity magnetron was perfected early in WW2. Percy Spencer noticed a candy bar in his pocket melting when he was working close to an operating radar in 1945. He experimented with heating food in a metal box fed from a magnetron the same year; Raytheon filing a patent for it. Raytheon built he first "Radarange" in 1947. A public vending machine was producing hot dogs in Grand Central Terminal in 1947.

Comment: Re:Pass because the price point is too high (Score 1) 80

by fnj (#49689367) Attached to: Intel NUC5i7RYH Broadwell Mini PC With Iris Pro Graphics Tested

I share those kind of concerns in general. The AOpen MP945 was an example of using an excellently engineered cooling system. There basically was nothing else in the box besides the CPU that made any appreciable heat. Mine was very quiet and never degraded. The NUC from what I've heard has similarly great thermal engineering. But when the cooling system on anything like this degrades or fails, you're going to have to try to find and pay for the expensive custom part. You can't just slap a new commodity fan in there.

Interestingly, my AOpens have held up better than anything else I've had. An endless train of motherboards have succumbed to capacitor failure, but none of my AOpens.

Comment: Re:Pass because the price point is too high (Score 1) 80

by fnj (#49689243) Attached to: Intel NUC5i7RYH Broadwell Mini PC With Iris Pro Graphics Tested

Without a dBa @ distance measurement, with comparisons to other equipment using the same measuring equipment, "quite loud" is not really a useful characterization. Even then the dBa level alone doesn't tell you all you need to know about the acousic objectionability factor. My good old AOpen MP945 with GMA950 graphics (exactly the same size as the good, original Mac Mini) idles and even does useful light work in silence in a quiet residential room with nobody else in the house to make any noise, and without any radio or TV or air conditioner running. Even all out, it is plenty tame, on the good side of laptop noise. The cooling system in a dynamite design.

But my AOpen GP7A with the power hogging NVidia graphics, even sitting idle, periodically roars like a bastard as some random daemon makes a quick tiny demand. When it is really working it sounds like a freight train or jet plane taking off, and oven-like air is rushing out of it.

The NUC takes even less power than the MP945. Certainly the 5i3 is damn quiet. I expect the 5i7 isn't all that noisy. I'm pretty certain it is a damn sight quieter than that GP7A.

Comment: Re: Pass because the price point is too high (Score 2) 80

by fnj (#49688757) Attached to: Intel NUC5i7RYH Broadwell Mini PC With Iris Pro Graphics Tested

It's not as high as that. Here is one with all the pieces (including 16GB and M.2 SSD) all assembled and tested for $755. Same thing with the 5i5 is $630; 5i3 is even cheaper.

A Mac Mini with an i7, 16 GB and the cheapest available SSD is $1400. I just went to the Apple store to check. And the Mac Mini is 19.7x19.7 cm. The NUC is 11.5x11.1 cm. A whole different class. Even the original Mac Mini before it got pointlessly squashed down vertically and bloated horizontally was 15x15 - 17x17 cm. If I could find my old shell I would tell you, but it was definitely in that range. The present Mac Mini doesn't even use an external power brick you can toss on the floor under the desk. The main case is bloated to hold the whole power supply.

Maybe you could tell us just what is out there that IS competetive with the NUC?

Comment: Re:Pass because the price point is too high (Score 2) 80

by fnj (#49688561) Attached to: Intel NUC5i7RYH Broadwell Mini PC With Iris Pro Graphics Tested

Mini-ITX is absolutely colossal compared to the NUC. Even the Mac Mini is gigantic in comparison. On the other end, ARM is not even in the ballpark in performance. ARM definitely has its place, but it is not in the same class as the NUC.

By the time you buy your mini-ITX motherboard, case, and power supply you are paying more than an equivalent NUC. The 3i7 is cheap. And, unlike mini-ITX jammed-together nightmares, the NUCs are beautifully engineered systems that go together neatly.

I have never seen a mini-ITX that had anything close to an acceptable cooling system. They were noisy and/or inadequate. I went through a phase where I built a number of mini-ITX systems, and none of them were ever anywhere near satisfactory.

Disclaimer: "These opinions are my own, though for a small fee they be yours too." -- Dave Haynie

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