* Posts by fnj

194 posts • joined 21 May 2010

Page:

US Marine Corps to fly F-35s from HMS Queen Lizzie as UK won't have enough jets

fnj

Re: They should save time...

There's another, much bigger problem with the UK building Nimitz class carriers. The UK doesn't have any dock big enough to accommodate one. Nor any experience with building or manning 260,000 hp mobile nuclear steam power plants. And before you suggest modifying one for an oil-fired steam power plant, they don't have any experience with those on a 260,000 hp scale either. Not to mention, the manning requirements would be prodigious. Without steam, you've got no steam catapults.

fnj

Re: it's Pearl Harbor

American film, Rubbish film

You want a crackerjack WWII naval film, watch Tora! Tora! Tora!. Midway wasn't half bad, either.

Forget Khan and Klingons, Star Trek's greatest trick was simply surviving

fnj

My paean to the greatest joys in my life

I agree with all the fond rememberings of E. E. Doc Smith's Skylark works; also all of Murray Leinster's Med Ship and other stuff. To that I would also like to nominate Keith Laumer and Rosel George Brown's incomparable Earthblood - the single work, of all fiction and non-fiction, which had the greatest impact on my soul. Reading that epic as a teen was my piece of heaven. Laumer's Retief yarns in all their profusion also gave me wonderful times.

fnj

Re: Huh?

@Danny 14:

I would guess that the bulk of people who watched ST and TNG were at least some part nerdy and watched partly for the "science" of it.

Even in 1966 I knew there was no such thing as "warp drive", and it was patently obvious that there never would be. Yeah, I dug the gadgetry, but what made my heart fairly burst with deep identification was Jean-Luc Picard's humanity and professionalism, and Commander Data's curious spirit and thirst for knowledge.

fnj

Re: that really gave Star Trek muscle was, in a word: science.

@Mage:

ST TNG was even less scientific.

ST TOS was simple golly gee whiz kid's adventure with plenty of militarism. ST TNG was about social development, understanding, humility, and human (and non-human!) performance, leadership, and sacrifice. As such it stands up very well in the company of such towering works as Command Decision and Twelve O'Clock High (both the movie and the series).

Linus Torvalds won't apply 'sh*t-for-brains stupid patch'

fnj

Re: I expect my manager to give me all kinds of shit if I f**k-up

@oldcoder:

Abuse is perfectly fine when you need to get the persons attention.

No it isn't. Abuse is NEVER acceptable. If one thinks that is the only or best way to get their attention, then one needs character development oneself. It is the mark of someone with poor people skills and no regard for the reason good manners have developed since the days of cave men. I don't mean everything has to be a negotiation. I mean you respectfully inform people when they make damaging mistakes, and work with them to become better. That helps both them AND YOU, and avoids provoking resentment and antipathy, which is NEVER a desirable outcome.

Still got a floppy drive? Here's a solution for when 1.44MB isn't enough

fnj

Re: At 500 kb/s

@Loyal Commenter:

That is going to take 6 days, 5 hours, 7 minutes and 50.912 seconds to write a 32Gb flash disk. I can see how that might be problematic.

Yep. You're the only one who noticed this painfully obvious fact. This piece of crap makes an ancient USB 1 (remember that?) port running at 1.5 Mb LOW SPEED seem like a speed demon! It's not much faster than a freakin' SERIAL port running at 115,200 baud.

Watch the world's biggest 'flying bum' go arse over tit in a crash

fnj

@cray74:

Well, all neon is produced by fractional distillation of atmospheric air. However, it costs $330/kg. The volumetric concentration of helium in the atmosphere, however, is less than one third that of neon, so it would be extremely expensive to produce using this method. Logic would suggest at least $3000/kg (the density being 1/3 as much as neon in addition to the concentration being 1/3 as much).

Right now, helium extracted from natural gas costs only in the general neighborhood of $20-30/kg.

fnj

Re: Certainly looks like a stall...

@LeeE:

I doubt that the fans are that restricted in their vectoring limits

I believe (and this info is very difficult to pin down) the forward propulsors are limited in swivelling to +-20 degrees. But additional thrust vectoring is available through using the movable vanes in the propwash. It's very difficult to impossible to judge the final vector direction by inspection.

fnj

Airship vs fixed wing "It`s an entirely different type of flying altogether"

Not exactly entirely different. The physical realities governing airship flight are a superset of those governing fixed-wing flight. Both have aerodynamic influences following the same physics, and to these the airship adds aerostatic influences.

Both can blunder into the ground.

Russia is planning to use airships as part of a $240bn transport project

fnj

Re: Helium supply

@Maje:

Weather (wind) is the biggest issue for airships, this is what destroyed the ingenious USA airship based aircraft carriers.

One of them flew into the ocean for unknown reasons. A prominent theory is that their altimeter was grossly out of calibration, they found themselves suddenly approaching the looming surface in stormy night conditions, and they dipped their stern into the water at speed by applying hard up elevator.

Controlled flight into terrain is still a recurring problem in HTA flight after all these years and experience.

The other one was lost due to a structural flaw which they knew about and were IGNORING. Not simple vulnerability to "wind".

Funny, Graf Zeppelin flew over 1.7 million km in 9 years, encountering severe weather on many occasions, including a violent hailstorm, but never displayed any structural or flight endangerment due to weather. The sole exception was a single incident on her first crossing where some fabric ripped when she was mishandled penetrating a severe wather front.

fnj

"using cheaper-than-plane airships"

Oopsie. Big boo-boo right there. The Zeppelin NT, with a passenger capacity of 12, costs about $20 million each. A Cessna 208B Grand Caravan EX, with a passenger capacity of 13, costs about $2 million.

The Zeppelin has a range of 900 km at 115 km/h on 447 kW. The Cessna, 1996 km at 343 km/h on 647 kW.

The $40 million Airlander 10 is not believed to have any passenger facilities at all. A developed production version due in 2018 is touted as having 19 seats.

Maintenance costs are enormous for airships and far outweigh the fuel costs. And they have to be tended all the time while parked on the ground.

Judges put FCC back in its box: No, you can't override state laws, not even for city broadband

fnj

@AC:

Writing as a Non-American, a situation like this where local communities are prevented from doing something as harmless and basic as hooking up their own Internet makes it sound like the USA is properly fucked up in a fundamentally important way.

Yes; that is certainly how a great many of us USians see it, too. But it is a political fuck up, not a legal one.

And if the Courts can't see that, aren't they failing in their duty somehow?

The various levels of government, and the courts, are (thank goodness) constitutionally constrained in their powers. The feds are granted only certain specific powers by the US Constitution. Everything else devolves to the states. If a state wants to tie the hands of its own municipalities, and if that state's own constitution empowers it to do so, then as long as the people's rights as specifically guaranteed by the US Constitution are not infringed, that is none of the feds' business.

fnj

Re: The view from the UK

@Peter2:

As a Brit, doesn't the court ruling just say that a government can't run an ISP and compete with a private business from taxpayers money?

No, it doesn't say that. A government can run any kind of business it wants, and compete with any private businesses it wants to. It would be a strange world indeed if it couldn't. But the question of whether it actually chooses to do this, is a political matter.

The ruling is, dead simply, about states' rights. All matters which the federal government is not granted by the US Constitution the specific power to deal with, are reserved to the individual states and their respective constitutions, as they see fit. If a state wants to tie the hands of its own municipalities, that is the state's business and not the feds'.

Toshiba flashes 100TB QLC flash drive, may go on sale within months. Really

fnj

Re: Some math

20 cents/kWh isn't "very expensive". I pay that much right on Cape Cod, Massachusetts. Japan is 26 cents. Australia is 29 cents. Spain is 30 cents. Germany is 35 cents. Denmark is 41 cents.

AdBlock Plus blocked in China: 159m forbidden from stripping adverts

fnj

@AC:

I think it's amazing how China has transitioned from communism to ultra-capitalism in so few years.

It hasn't. It has slid to Hell much like every other government has. It's an equal-opportunity Hell. The old ideological divisions are passe now. Governments of all flavors throughout the world have become corrupted by crony corporatism. Goebbels, Stalin, the DNC and the RNC in the US, Labour and Conservatives in the UK, theocratical tyrannies in the Mideast; all of them are masters of indoctrination and brainwashing and deathgrip control.

fnj

The Man

Ravening all-powerful mammoth self-righteous government, indoctrination/brainwashing masquerading as education, and advertising by selfish capitalist corporations are all slightly different colors of the same basic evil.

Giant Musk-stick test-firing proves a rocket can rise twice

fnj

Re: Apparenty...

I realize it's childish and pointless of me, but I always get mad as hell when confronted by the awesome level of ignorance and stupidity exhibited in the comments for videos like that one. Obviously every one of the comments offered by anyone with two brain cells to rub together have been fastidiously expunged so all we get is an echo chamber of retards.

Seagate: We've doubled flash capacity without density changes

fnj

The blindingly obvious question

Well, what does it cost?

Explo-Xen! Bunker buster bug breaks out guests from hypervisor

fnj

Difficult to phrase this without condescending

"More tidier" code? Really? All your proofreaders who successfully achieved a grammar school education missed this?

Tesla's Model S autonomous mode may have saved a life

fnj

Re: "Saving" lives...

@JeffyPoooh:

Car hitting pedestrian in a downtown area, where the car is presumably travelling roughly in accordance with city speed limits, perhaps 30 or 35 mph (about 50-60 kph) maximum, is (these days) fatal to the pedestrian significantly less than 50% of the time.

Are you serious? First of all, on a city street with cars parked all along both sides, with doors that could suddenly be flung open, and the sidewalks mobbed with people who could dart out from between them, 99% of the time I'm driving at 10-20, regardless of what the posted or general speed limit is. That speed limit is an absolute maximum for perfect conditions. Anyway, I've NEVER seen a city street posted at 35. More usually, the are posted 25 or 30.

Now then. You think being clobbered by a one ton metal object hurtling at a speed of 15 meters per second is survivable? I think you're badly confused. Maybe if the driver is going 30, sees someone dart out in front of him, and manages to brake to maybe 15 before hitting him, MAYBE then he won't be too seriously hurt. At 30, he is going to be severely injured, if not killed. At 35, it is going to be flat-out fatal well over half the time.

An anniversary to remember: The world's only air-to-air nuke was fired on 19 July, 1957

fnj

@phuzz

Making a physically small nuclear weapon is more difficult than a large one. There is a lower limit to the smallest amount of fissile material that can create a nuclear explosion

Correct, miniaturization is the trick. But the critical mass of the fissionable material is NOT the limiting factor. The critical mass of a dead simple sphere of U-235 is only 48 kg, and of Pu-239, only 10.5 kg. Using various extremely clever tricks, Fat Man actually contained only 6.2 kg of plutonium. But the complete bomb weighed 4670 kg. The cross section and intricate description here will give you some idea why.

Today, the US has weapons with 10 and more times the explosive power that are much smaller and lighter. The really big bombs, which were 500 times as powerful as Fat Man, have been retired.

fnj

Re: its hard to find anyone who has died from radiation, anywhere in the world.

@Pascal Monnet

Second, you might remember a little event called Three Mile Island

Nobody was injured by radiation from the TMI accident. Not on site, and not in the surrounding environment.

More recently, you have to have heard of Chernobyl. ... Thousands died from exposure on-site

Another fantasy. In the 3 months following Chernobyl, a total of 31 people, workers and cleanup crew, died of acute radiation exposure. Thyroid cancer deaths reached 15 after a few years. The toll of thousands of excess cancer deaths in the general population is a wild assed guess. The cancer mortality incidence is estimated to be raised by less than 1%. There is no way you can ever identify people whose death is attributable to that.

Fukushima: zero deaths to workers and cleanup crews.

Linus Torvalds in sweary rant about punctuation in kernel comments

fnj

Re: All of Linus's examples are wrong

@heyrick

If he wants balanced and pleasing, the asterisks from the second line down should be indented one space to line up with the top asterisk. Anything else is fugly.

Damn right. But I don't think we can tell from TFS whether he intends to show them lined up or not. I was trying to figure it out from the context, and gave up. Using proportional fonts when showing code is unclear and lazy.

One container to rule them all? No. Um, a plastic box* refresher

fnj

LXD FTW

The only one you really need is LXD. Just ignore all the others, unless some outside influence forces you to muck with them. There is no point to Docker. LXD can do everything Docker can do, plus a whole lot more, with very little added overhead. And you get normal syslogging and all the other normal init management. You don't have to adopt a whole other way of operating inside the container.

LXD is just as useful as KVM or Xen, as long as you are just virtualizing linux inside linux - but with much less overhead.

Lightning strikes: Britain's first F-35B supersonic fighter lands

fnj

It has to do with the inescapable fact that A-10s are meat on the table for any kind of fighter; even a 50 year old fighter design. But so were B-17s in their day, and that did not make them useless. P-51s could escort them, and nowadays if we would only build A-10s PLUS single-purpose air-superiority fighters, and use them both together, we would get a hell of a lot more bang for our buck - or I should say a much better bang PLUS much less bucks overall for the bang.

fnj

Re: Harriers

Not to split hairs, but "diesel powered" is not the same as "diesel fueled". "Diesel powered" means using compression-ignition reciprocating engines. "Diesel fueled" just means using any kind of prime mover which burns diesel fuel.

Queen Elizabeth class has 96,000 hp of installed gas turbine power plus 54,600 hp of installed diesel power. The diesels are evidently considerably more than "auxiliary" power plants. It's a lot closer to 1930s-40s German plans using diesels for cruising with steam turbines for dash capability.

Note that 1/3 the hp gets you CONSIDERABLY more than 1/3 the speed. In fact, 1/3 the hp typically gives you around 70-80% the speed.

NVMe SSDs tormented for months in some kind of sick review game

fnj

Endurance???

What the heck is the endurance? Endurance is the sore spot of flash. Anybody with a clue is more concerned with the endurance than with any other spec.

Judge rules FBI can hack any time, any, place, anywhere

fnj

@Meldreth: the slimy lizards cross their fingers while taking the oath, so it doesn't count.

Cable box unlock block

fnj

Dear FCC

Please conduct an additional study of the matter for 5 minutes tomorrow. Then tell the Congress buffoons you studied it and found nothing has changed since the last time you studied it.

That's if Obama doesn't veto the goddam budget bill because of this stupid rider. Then the buffoons will either have to sheepishly advance another bill without the rider, or lose another "government shutdown" PR battle like they always do, and THEN advance an acceptable bill.

Jeeze, these buffoons just don't get it. They are the DEFINITION of stupid.

Surveillance forestalls more 'draconian' police powers – William Hague

fnj

Decode THIS!

Les sanglots longs

Des violons

De l’automne

Blessent mon cœur

D’une langueur

Monotone.

Comcast slapped with eight-figure tax bill after package fails to impress

fnj

$383/mn

Excuse please, this is way off topic, but who is teaching people to use "mn" for "month"? I remember being taught in the 1950s that it was "mo". For that matter, when did "bn" for "billion" start appearing?

Feinstein-Burr's bonkers backdoor crypto law is dead in the water

fnj

Re: Round 2

@a_yank_lurker:

the criminals will not give up until the US is another full-blown banana republic

Heh, there's no danger of that. A banana republic has to actually produce a product that is in demand to export. Not just mayhem, death and destruction.

fnj

Extension

Now when can we have Burr and Feinstein lying stone-cold dead in the water as political entities? Now that would be some real progress, and a useful object lesson to tyranny.

Just chopping heads off the monster Hydra as they regenerate endlessly is not enough. It has to be plain that tyranny has a cost.

P.S. - I plainly specified "as political entities", not "as human corpses", so let's not have any whinging and cries of "hate speech".

Inside Electric Mountain: Britain's biggest rechargeable battery

fnj

Re: Don't gloat yet awhile...

@Commswonk - it's actually (nominally):

230 x 13 = 2990

120 x 15 = 1800

So the ratio is 1.661, not 1.891.

fnj

Just keeping it real

Everybody going on about 110/220 V please get with the program. It's been 120/240 V nominal at the entry into the house in the USA for simply ages. It's actually only spec'ed +-5%, so anything in the range 114-126 V is in spec for the supply. Equipment must be capable of working without appreciable handicap anywhere from 110-130 V. Most computers and TVs are perfectly happy working with 90 V or less, up to at least 130 and very often over 240 without any circuit switching.

I am informed that the UK is 230 V, so the ratio is not "over 2.0"; not even exactly 2.0, but rather less than 2.0.

I have a very strong memory of reading that the nominal voltage in the US used to be 110/220, but that was at least 50 years ago. I cannot now locate any trace of information on the web to that effect.

Super-slow RAID rebuilds: Gone in a flash?

fnj

Re: RAID5 no longer has a role with hard drives

@Paul Renault

I've seen a 2TB RAID5 take 72 hours to rebuild on a fast desktop computer.

1) What the heck? That's pathetic performance. I just replaced a 3TB drive in a 12TB usable / 18 TB total with double parity ZFS RAID-Z2 array (90% full) and it resilvered overnight. Consumer grade 7200 rpm SATA drives.

Granted I wouldn't use RAID-Z2 nowadays. I've used RAID-Z3 (triple parity) in newer builds.

2) Who uses old fashioned RAID any more anyway when there is ZFS?

NIST readies 'post-quantum' crypto competition

fnj

@AC:

Just as Truecrypt used to do... Before it was harried into oblivion.

Oblivion: the act or process of dying out; complete annihilation or extinction.

Truecrypt is not dead or forgotten. The source code still exists and still compiles just fine, and it is just as effective as it ever was.

Thunderbird is GO: Mozilla prepares to jettison mail client

fnj
Megaphone

A chance to do some long-overdue good, actually

In general all it needs, and all that it should be touched for, are security fixes for vulnerabilities that emerge, a very few bug fixes, and one or two config rationalizations.

Beyond that, the only change that is REALLY needed, and this is in common with Firefox, is some semblance of sane memory management. This is in reality a bug fix for a colossal and deeply embarrassing super-bug. I am sick and tired of watching my Thunderbird process in ps grow in RAM use past 1, 2, 3, 4, 5, even yes, 6 GB, instrumental in driving my 16 GB RAM super powerful desktop into memory exhaustion swapping so bad that it cannot be recovered without hitting the power switch.

It gobbles RAM with every message you read, every search you run, every time you switch between accounts. I've repeatedly verified that it hogs down RAM, more and more over time and without any limit whatsoever, even just sitting statically on the desktop collecting new mail.

Firefox with plenty of tabs open shares the same inexcusable RAM hogging.

There is no excuse for this infantile, incompetent level of code design. It is only possible to read one message at a time. Having collected the other messages, the collection code's job is DONE until a new one is opened to be read. All RAM used to collect them should be freed. This is NOT rocket science. Same with Firefox tabs. Only one tab is active and live (or one SHOULD BE so) at a time. Having rendered other tabs, all RAM used to do so should be FREED.

In the case of Firefox, I completely abandoned it for Chrome. The same problem is still there, but not quite as bad, and the entire browser does not get bogged down as horribly just because a bunch of tabs are open.

For Thunderbird, I mostly had to abandon it in favor of Claws because T-bird's behavior got so pathological. I had to give up significant features to do so, but I can leave Claws running for many days at a time, collecting many accounts, and RAM use does not climb at all.

$ ps -C claws-mail,thunderbird -o vsz,rss,comm,etime

VSZ RSS COMMAND ELAPSED

1802716 790736 thunderbird 10:00

1337436 187896 claws-mail 15-10:52:31

(sorry, code and pre tags do not work properly)

Yeah, Claws has been running for 15 days, while I just started Thunderbird 10 minutes ago for the illustration. That Thunderbird RSS will climb to 6,000,000+ (6 GB) if I leave it sitting open a few days.

Will Comcast's set-box killer murder your data caps? The truth revealed

fnj

Re: One word: Monopoly

When you have that much power, you (should) have the various parts of your business operating at arms length to each other. That means no free-passes by the internet/transmission business to the content side of the business, or vice-versa.

@P. Lee - I couldn't agree more, but (it's just me but ...) personally I would go way, way, WAY beyond that. I am wondering what disgusting tools thought it would be a fine idea for the content providers to be subsumed by the carriers. I also think that this would be more crystal-clear if the carriers were actually classified as what they de facto ARE: common carriers.

fnj

Whilst I'm obviously against net neutrality

@Adam JC - Nothing could be less "obvious", OM. You can't just toss that out there like that and not expect us to wonder by what reasoning or instinct you came to that opinion.

Furious customers tear into 123-reg after firm's mass deletion woes

fnj

Re: Takes courage

@Destroy All Monsters:

Code this shit explicitly.

Using a programming language.

Any programming language.

Not murderhack "how is this interpreted NOW?" bash.

Oh come now. This class of error has absolutely zero to do with using bash specifically, or even using a shell based on POSIX sh. It has everything to do with the hazards of constructing arguments dynamically, no matter what the language. MySQL, python, C, go, or anything else: they all entail the same hazard.

fnj

Re: Takes courage

Watch out, using sh -e or set -e is usually crap. It is not that unusual to execute commands in the shell which are expected to return non zero in the ordinary course of events; e.g.:

#!/bin/sh

set -e

x=`expr 0 \* 1`

echo "$x"

The echo command is never executed, but there is no diagnostic. That'll give you a bad day debugging. It's the same behavior in POSIX sh and bash.

You're right about sh -u or set -u, though. It's a lot easier than testing every use of a variable with [ -z "$var" ], and does give you a built-in diagnostic when it aborts. As others noted, neither one is a complete protection, of course.

Bundling ZFS and Linux is impossible says Richard Stallman

fnj
WTF?

"Impossible", my arse

Pssst - Mr. Stallman - it may be impossible in your OPINION; not in the considered opinion of many others; but in the real world it is BEING DONE. Deal with it. Ubuntu 16.04 Beta 2 has already shipped with it, and it is a wonderful win for the users. In 12 days the final release will ship. Either join the legal machinations of certain obstructionists, or shut the heck up. Ubuntu has consulted actual legal opinion, and is not about to change its mind due to your spouting off. If, then, the obstructionists win in court, you can bask in satisfaction and the users can damn you and move on to BSD.

I have been using ZFS on CentOS for years in the form of a DKMS module that I have to compile myself every time either ZFS or the kernel gets updated. As a user, this just means when I switch to Ubuntu 16.04 I won't have to deal any longer with the stupid borked-up "weak-updates" misfeature of DKMS.

Linux is so grown up, it's ready for marriage with containers

fnj

Lxd FTW

VMs are too heavy. Docker containers are too limited and require apps to be specially written. Lxd containers are just right for a lot of stuff, if not most stuff. You can put as many services as you want in a single lxd container. Just one if you want - it's not appreciably heavier than docker. A whole lot of services if you prefer. Just like a VM. And they are ordinary services just like ones in the host OS.

Read America's insane draft crypto-borking law that no one's willing to admit they wrote

fnj

Failure to measure up

1) It goes against my instinct of the truth, but I am willing to grant well meaning motivation to these two individuals.

2) We are entitled to expect more than meaning well from our elected leaders. We are entitled to expect them to inform themselves of the issues on which they legislate, and we are entitled to expect them to respect the Constitution, human rights and dignity, and the sovereignty of the People.

FreeBSD 10.3 lands

fnj

Re: 1980s coder

<blockquote>Gnome has become awful. The only one that's halfway good is Cinnamon, so it's not surprising that Mint is doing well.</blockquote>

Yes, Gnome circled the bowl and flushed itself when the developers abandoned a perfectly good design, ver 2, and came out with the ver 3 abortion. And yes, Cinammon is better. But they are far from the only games in town. There are KDE, Mate, Xfce, Enlightenment, LXDE, Trinity, CDE, and Lumina, which between them fill just about every possible preference and tradeoff between features and lightness/speed. And that is far from an exhaustive list.

IMHO Mate is substantially the best of all. It will be instantly recognizable and fully usable by any Gnome 2 devotee.

fnj

Re: @ephemeral: Who uses FreeBSD in preference to Linux and why?

@sysconfig - first, you make some great points, almost all of which I entirely agree with. However ...

<blockquote>FreeBSD has the most solid and longest running non-Solaris implementation of it, which also runs as a kernel module and not, like on Linux, in Userland</blockquote>

Utter horse feathers. ZFSonLinux is a kernel module, albeit one that uses a shim (SPL - Solaris Porting Layer) to emulate a bunch of the Solaris kernel interface. You are probably thinking of zfs-fuse, which, in the dim past, USED to be the only way to run ZFS on linux. They are COMPLETELY different animals.

<blockquote>ZFS on Linux in any form is much younger, hasn't seen a lot of production use, and is therefore a no-no for the time being in any case.</blockquote>

It is certainly comparatively young, but for at least a couple of years now, ZFSonLinux has been rock-solid and most definitely production ready. Lots of people use it, plenty of them for mission critical work. I am one of them. I use ZFSonLinux on multiple systems, as well as ZFS under FreeBSD.

Go nuts, brother: Ubuntu 16.04 beta – no more auto data-spaffing

fnj

Re: It's the server version that got my attention

<blockquote>Just a mere 8 GB, eh? And there was me thinking that Ubuntu (desktop, admittedly) would run in half a Gig of RAM...</blockquote>

Did you completely overlook the fact that I was running seven operating systems at the same time, plus ZFS, which has the reputation of being a memory hog, in 8 GB?

fnj

It's the server version that got my attention

I jumped on the beta to try out the server version on a headless system. There are two HUGE wins. The article barely touches on one of them, and doesn't even mention the other.

1. ZFS fully baked in means no more DKMS nightmare with the expletive-deleted "weak modules" generated on upgrades, which screw up the system.

2. LXD is an earth-shaking development. This is the first availability in pretty-fully-ready-for-prime-time form. It makes LXC containers a pleasure to use. I see this tech overshadowing full virtual machine tech such as KVM, and far preferable to Docker. In no time at all I brought up 6 containers with the 2 latest versions of CentOS, Debian and Ubuntu, all running together with virtually no load on the host system, everything under-committed. It only uses as much RAM, disk space, and CPU as needed for the load you put on the containers.

ZFS and LXD work synergistically together. My test system is an 8-10 year old junk box low-end system with only 2 cores, no hyperthreads, and only 8 GB RAM, and it is happy as a clam and super responsive.

If you clone one container n times (cloning and starting is an incredibly quick operation), they all share almost all the same store on the hard drive initially. Through the magic of ZFS COW, as soon as you make changes between them it transparently generates the most efficient branching of the storage.

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