* Posts by dfsmith

15 posts • joined 22 May 2018

Fun fact: GPS uses 10 bits to store the week. That means it runs out... oh heck – April 6, 2019


Re: 52 weeks per year

GPS was a military project. Military stuff tends to sit in a box for a decade or so, and some people get rather annoyed when it doesn't work straight out of the crate and the bullets are flying.


just keep wrapping

How do you sleep at night knowing that the TCP checksum is only 16 bits? Or do you set your MTU to less than 284? It must be terrible knowing that well-defined integers might wrap! ;-)

Not cool, man: Dixons spanked over discount on luxury 'smart' fridge with wildly fluctuating price


Re: American-Style Smart Fridge Freezer

The fridge keeps getting warmer and warmer, but it denies it.

Heads up: Debian's package manager is APT for root-level malware injection... Fix out now to thwart MITM hijacks


Re: "Supporting HTTP is fine,"

Using HTTPS (rather than HTTP) means than an external observer (e.g., your friendly network admin) cannot detect that your machine is retrieving indexes with invalid signatures. Uh oh!

This message brought to you by the Department of Implausible Contrary Scenarios.*

* Acronym now 20% more funny.

Germany has a problem with the entire point of Amazon's daft Dash buttons – and bans them


I really liked my Dash button, placed strategically inside the toilet paper cupboard.* But that appreciation evaporated when they sent me a different product to the one I wanted (which didn't fit properly in the holder). I'd much rather the button *only* send me an email if they cannot ship the right thing.

* It's amazing how little I think about TP during the day, and realize, at home, too late, that I should have been.

Feeling a bit gassy? Toshiba floats 16TB helium whopper


Re: WTF is 550TB/year workload rating ? limited endurance or something else

Consumer SSD endurance is less than 500 overwrites these days. If your workload is like you describe, I'd suggest adding another HDD. E.g., Samsung 850 PRO is 150TB written total; or 30 days under your scenario. Of course, you'd need about 30 SSDs to match the capacity, which takes you out to about 2.5 years before you have no space left.

Excuse me, sir. You can't store your things there. Those 7 gigabytes are reserved for Windows 10


Re: 32GB HP and Linux GUI

By default, Linux is reserving more than 35GB on one of my partitions. I could change that but... ooh squirrel! (dumpe2fs -h /dev/md1 | grep Reserved).

Reg Standards Bureau introduces the Devon fatberg as coastal town menaced by oily blob


Re: But seriously though...

Well, the size of the fat blobs will be inversely proportional to the inverse of the sewer inspection period, give or take a power/logarithm. How often does SWW send a guy down there, compared with the '90s? I'm guessing it takes at least a decafortnight or two to make a 340-govt-standard-Welsh-dresser fatberg.

You were told to clean up our systems, not delete 8,000 crucial files


Re: TMP=temporary? I hope not!

I named my (long-running) temperature logging data "temp.log". After nearly deleting it years later, I renamed it "degC.log". Don't get me started on template files.

Oops. Huawei beaten by cheap 'n' cheerful competitors in all-flash benchmark


Re: Performance isn’t everything.

A few years back I found out I could double the speed of a flash SSD by switching "mode". It did return incorrect data, but it did so blazingly fast.

A few reasons why cops haven't immediately shot down London Gatwick airport drone menace


Three words...

Fetchez la vache!

Behold! Blocks and Files is born again as storage tech website returns


Headline summary of the comments

The Register reveals rational rag to regular residents: doesn't register with reticent reviewers.

Sysadmin sank IBM mainframe by going one VM too deep


Re: Just to mudddy the waters a trifle ...

Don't forget the guinea; which was (at least in my head) a pound that included the tip. (Mostly valued at 21 shillings, but somewhat dependent the value of gold.)

Software changed the world, then died on the first of the month


Re: Not quite the end of the month....

But why would you complicate the task with perl, when you can complicate it just as much with bash?

today=`date +%Y-%m-%d`

yesterday=$( date -d @$(( `date -d "$today 1200" +%s` - 60*60*24 )) +%Y-%m-%d )

(The "1200" is to mitigate the leap second problems.)

Braking news: Tesla preps firmware fling to 'fix' Model 3's inability to stop in time


Re: A different problem

I typed your numbers into the online calculator you cited, and it returned 0.8g deceleration. Since they're using the standard A=(V*V)/(2*D) equation, you might want to check your numbers. (Braking system strength tests intentionally do not test driver reaction time.)

Under 1g of deceleration, it's like coming down a 1:1 gradient on a planet 40% denser than earth. (SpaceX has no plans to test it on a planet like that, AFAIK.)

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