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Comment: Re:It's not a "right" (Score 5, Insightful) 105

by MrNemesis (#40039135) Attached to: Social Networking: The New Workplace Smoke Break

The core problem, of course, is that many workplaces (particularly offices) have no adequate way to measure employee productivity and thus use "time spent staring at your desk at a VDU" or similar as a surrogate indicator of performance.

The most productive people I know are the ones who regularly take short breaks. Even when we're in the middle of a crisis, our bosses will insist on us taking short breaks, and as an ex-smoker I still take fag breaks - you'd be amazed how many eureka* moments you can get whilst standing outside the office looking at a flower bed or waiting in line for a coffee wondering what the difference between two roasts is.

Just like too much coffee can ruin your concentration, staying on the same problem for too long frequently makes you blind to the actual solution.

* itself, of course, a term coined when the frustrated Archimedes took a break from trying to solve his problem.

Comment: Re:tmpfs (Score 2) 184

Swap files may grow, but the speed of hard drives doesn't scale along with everything else. Take a good platter-based drive and you're lucky to see reads/writes of 20MB/s assuming little to no HDD contention, especially since swap is typically highly random non-sequential 4k access. RAID that up or us an SSD and you might get 50MB/s. Lets say you have a 512MB swap, as I do, it'll take 10s to read the whole thing. Take a 512GB swap (like one poor server I found at work - someone was following the appallingly stone-aged adage about swap=mem*2) and all of a sudden it's going to take you 3 hours to read back all that virtual memory.

Compare that with some old memory, say some DDR-333, which has a transfer rate of over 2GB/s. Compare with the DDR3 in my workstation, capable of 12GB/s.

Back when we were limited to miniscule amount of memory, lots of swap made sense because memory was horrifically expensive and it didn't take *that* long to read/write to, because the total amount of memory was still fairly small in comparison. But these days you're looking at wait times of 30 minutes or more if you want your entire swap space to be double your memory and to be used by the OS.

Stick with a small swap file and not much crap ever gets written to disc, saving you the horror of having to reset a server for the umpteenth time when it's been grinding on its system disc for five minutes trying to page in the OOM killer.

Comment: Re:Close but no cigar for the moment... (Score 1) 470

Comment: Re:Not a new - or a particularly great - idea (Score 1) 353

by MrNemesis (#39030745) Attached to: Mozart and Bach Handel Subway Station Crime

They've been playing classical music at Brixton tube station for at least two or three years, on and off, and only in the evening I think.

Unfortunately, the PA system is so uniformly shitty that it doesn't sound much better than the tinny music coming out of kids mobiles. Would be much nicer if they could give the lady violinist with dreadlocks who I often see at Stockwell a permanent spot.

Comment: Re:Do companies really use Big Iron anymore? (Score 1, Troll) 230

by MrNemesis (#39018149) Attached to: NASA Unplugs Its Last Mainframe

Working in a company that ditched the last of its mainframes just as I arrived (and was lucky enough to get to talk to some of the awesome IBM techs who were decommissioning the hardware), this lovely excerpt from The Cryptonomicon is just as apropos for mainframes as it is for bandsaws and Vickers machine guns:

Now when Bobby Shaftoe had gone through high school, heâ(TM)d been slotted into a vocational track and ended up taking a lot of shop classes. A certain amount of his time was therefore, naturally, devoted to sawing large pieces of wood or metal into smaller pieces. Numerous saws were available in the shop for that purpose, some better than others. A sawing job that would be just ridiculously hard and lengthy using a hand saw would be accomplished with a power saw. Likewise, certain cuts and materials would cause the smaller power saws to overheat or seize up altogether and therefore called for larger power saws. But even with the biggest power saw in the shop, Bobby Shaftoe always got the sense that he was imposing some kind of stress on the machine. It would slow down when the blade contacted the material, it would vibrate, it would heat up, and if you pushed the material through too fast it would threaten to jam. But then one summer he worked in a mill where they had a bandsaw. The bandsaw, its supply of blades, its spare parts, maintenance supplies, special tools and manuals occupied a whole room. It was the only tool he had ever seen with infrastructure. It was the size of a car. The two wheels that drove the blade were giant eight-spoked things that looked to have been salvaged from steam locomotives. Its blades had to be manufactured from long rolls of blade-stuff by unreeling about half a mile of toothed ribbon, cutting it off, and carefully welding the cut ends together into a loop. When you hit the power switch, nothing would happen for a little while except that a subsonic vibration would slowly rise up out of the earth, as if a freight train were approaching from far away, and finally the blade would begin to move, building speed slowly but inexorably until the teeth disappeared and it became a bolt of pure hellish energy stretched taut between the table and the machinery above it. Anecdotes about accidents involving the bandsaw were told in hushed voices and not usually commingled with other industrial-accident anecdotes. Anyway, the most noteworthy thing about the bandsaw was that you could cut anything with it and not only did it do the job quickly and coolly but it didnâ(TM)t seem to notice that it was doing anything. It wasnâ(TM)t even aware that a human being was sliding a great big chunk of stuff through it. It never slowed down. Never heated up.

In Shaftoeâ(TM)s post-high-school experience he had found that guns had much in common with saws. Guns could fire bullets all right, but they kicked back and heated up, got dirty, and jammed eventually. They could fire bullets in other words, but it was a big deal for them, it placed a certain amount of stress on them, and they could not take that stress forever. But the Vickers in the back of this truck was to other guns as the bandsaw was to other saws. The Vickers was water-cooled. It actually had a fucking radiator on it. It had infrastructure, just like the bandsaw, and a whole crew of technicians to fuss over it. But once the damn thing was up and running, it could fire continuously for days as long as people kept scurrying up to it with more belts of ammunition. After Private Mikulski opened fire with the Vickers, some of the other Detachment 2702 men, eager to pitch in and do their bit, took potshots at those Germans with their rifles, but doing so made them feel so small and pathetic that they soon gave up and just took cover in the ditch and lit up cigarettes and watched the slow progress of the Vickersâ(TM) bullet-stream across the roadblock. Mikulski hosed down all of the German vehicles for a while, yawing the Vickers back and forth like a man playing a fire extinguisher against the base of a fire. Then he picked out a few bits of the roadblock that he suspected people might be standing behind and concentrated on them for a while, boring tunnels through the wreckage of the vehicles until he could see what was on the other side, sawing through their frames and breaking them in half. He cut down half a dozen or so roadside trees behind which he suspected Germans were hiding, and then mowed about half an acre of grass.

By this time it had become evident that some Germans had retreated behind a gentle swell in the earth just off to one side of the road and were taking potshots from there, so Mikulski swung the muzzle of the Vickers up into the air at a steep angle and shot the bullet-stream into the sky so that the bullets plunged down like mortar shells on the other side of the rise. It took him a while to get the angle just right, but then he patiently distributed bullets over the entire field, like a man watering his lawn. One of the SAS blokes actually did some calculations on his knee, figuring out how long Mikulski should keep doing this to make sure that bullets were distributed over the ground in question at the right densityâ"say, one per square foot. When the territory had been properly sown with lead slugs, Mikulski turned back to the roadblock and made sure that the truck pulled across the pavement was in small enough pieces that it could be shoved out of the way by hand.

Then he ceased firing at last. Shaftoe felt like he should make an entry in a log book, the way shipsâ(TM) captains do when they pull a man-of-war into port. When they drove past the wreckage, they slowed down for a bit to gawk. The brittle grey iron of the German vehiclesâ(TM) engine blocks had shattered like glass and you could look into the engines all neatly cross-sectioned and see the gleaming pistons and crankshafts exposed to the sun, bleeding oil and coolant.

They're not the sexiest hardware, but they're there to do one of a few jobs well, and to keep doing them no matter what.

Comment: Re:Thank god we still have Radio Shack (Score 1) 491

by MrNemesis (#38996085) Attached to: The Gradual Death of the Brick and Mortar Tech Store

Same here - I used to get all my computer components from scan.co.uk but their customer service was appalling. Negotiating a replacement took a battery of emails and phone calls and paying my own postage ending with a "the item is fine, we're charging you £xyz for costing our time" and I'd either get back the same item still faulty, or a silently-replaced (diff. serial number) functional item. Before I shopped at scan, I used aria.co.uk who refused to ship me an order I never received, despite having no tracking information for the parcel. Had to take those fuckers to the small claims court.

With amazon, I say "it's broken, I want a refund", I get a refund. When I got a DOA NAS unit, the replacement was there the next day along with the "here's a DHL coupon thing, let them know when you're ready to send the original back and they'll pick it up from your door. Coupon is valid for weekend pickups too!". As with you, if the cost of the postage is too much (as with a lot of DVD's) they'll say "just keep it or throw it away".

And yes, I frequently pay above the odds (they're usually 2-3% more expensive than the "cheapest" online from a reputable dealer) simply for the peace of mind.

Comment: Re:"Report Bug" clicky (Score 1) 360

You forgot the mandatory "After spending literally seconds looking at your responses to my pointless questions about video drivers, I decree that it's almost certainly due to you having a virus rather than being a bug, as such I'm now closing this ticket and ignoring any future bug reports from you".

Have a nice day!

"Consistency requires you to be as ignorant today as you were a year ago." -- Bernard Berenson

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