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Comment Re:Amtrak's existing signal system (Score 1) 393

A locked cockpit door could have prevented 9/11

And, since 9/11 has been a contributory cause to at least two crashes. (Helios Airways 522 and Germanwings 9525).

(P.S. before somebody trots out the old "9/11 was the last time a plane could be hijacked" meme check it out --- there have been 10s of hijackings since 9/11).

Comment Re:Fight! (Score 5, Informative) 293

OP:

I recall NASA predicting complete loss of arctic sea ice by 2013, and the navy predicting the same in 2016.

You:

after reviewing his own new data, NASA climate scientist Jay Zwally said: "At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions."

US Department of Energy-backed research project led by a US Navy scientist predicts that the Arctic could lose its summer sea ice cover as early as 2016 - 84 years ahead of conventional model projections.

Are you unable to see the difference?

One NASA climate scientist said "the Arctic Ocean could be nearly ice-free at the end of summer by 2012", not "NASA predicted complete loss of arctic sea ice by 2013".

As it happened we hit the lowest sea ice extent since 1979 in September 2012.

A US Navy scientist predicted that "the Arctic could lose its summer sea ice cover as early as 2016", not "the Navy predicted complete loss of arctic sea ice by 2016".

As it happens we're currently only just inside 2 std deviations of the average, looking much like 2014 and 2013.

Anyway, to see what's happening go here http://nsidc.org/arcticseaicenews/charctic-interactive-sea-ice-graph/.

Comment Re:Logs via network (Score 1) 347

Randomly swapping system components to see what's broken? Where have I heard that one before:

Q: How can you recognise a DEC field circus engineer with a flat tire?
A: He's changing one tire at a time to see which one is flat.

Q: How can you recognise a DEC field circus engineer who is out of gas?
A: He's changing one tire at a time to see which one is flat.

http://www.catb.org/jargon/html/F/field-circus.html

Comment Re:Logs via network (Score 1) 347

Found pretty much what I was looking for - the journal library mmap()s the requested journal file and watches for additions using inotify event queues. So, everything is going through the disk before it goes out to the network.

No, going to memory -- even if it's written sync the in-memory cache and inode will get updated before the disk write is done, so the write to the network should happen in parallel with the write to the disk.

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