×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

California Utility May Replace IT Workers with H-1B Workers

tlambert "...who exactly is the H1-B police..." (197 comments)

And who exactly is the H1-B police who come arrest the violators?

That would be:

= U.S. Immigration and Customs Enforcement (ICE)
= U.S. Citizenship and Immigration Services - Fraud Detection and National Security Division (FDNS)
= U.S. Department of Labor - Office of Inspector General
= U.S. Postal Inspection Service (USPIS)
= U.S. Department of State
= U.S. Attorney’s Office for the Southern District of Iowa

At least that's who it was for this case: http://exbay.blogspot.com/2009...

So perhaps you are an idiot for implying that these laws are unenforced and unpoliced, and it's a scaremongering tactic which actually has very little to do with the offshoring indicated by the original article, which in turn has very little to do with H1-B's at all, since off shore workers are in other countries, and don't require H1-B visas to be employed by a U.S. company, if they never leave their home country.

yesterday
top

Detroit: America's Next Tech Boomtown

tlambert Re:Profits (325 comments)

Given that Ford earned $7.2 Billion in net income in 2013 and GM made a $3.8 billion profit over the same period I think GM and Ford will be very surprised to hear that they cannot make cars in the US profitably since most of their profit comes from US operations.

They'd only be surprised if you told them they'd be doing it in Detroit, instead of non-union plants in other U.S. states:
http://www.nytimes.com/ref/us/...

You don't need to expand factories to make the efficient.

Correct. You just need to reduce the number of employees to increase the profit per employee, which is something you can do with automation, and.or lower wages, which is not something you can do in Michigan.

yesterday
top

Detroit: America's Next Tech Boomtown

tlambert Re:FLYOVER (325 comments)

If you're interested in high tech manufacturing with a skilled workforce, it would be hard to find a better place than the automation alley counties. What you'll spend in wages will be more than made up in productivity. And you won't be spending a fortune in recruiting costs. If you build a factory your staffing problem won't be finding qualified workers, engineers or tradesmen, but getting a big enough HR department to hire them.

The reason all but one automotive assembly line has pulled out of Detroit is that the unions wouldn't allow that much automation, or you were "allowed" to have it, but you had to still hire the same number and type of workers to satisfy the contracts, so it didn't do crap to change your value to unit labor cost ratio.

You are an absolute idiot if you locate a manufacturing facility in a state where the unions are in charge of whether or not you get labor, and you can't push costs down by automation.

Most blue collar jobs have migrated outside the U.S. due to inflated labor costs relative to value produced. It has dick all to do with what a living wage is or isn't, and *absolutely everything* to do with value produced per unit labor cost. Most U.S. auto manufacturing that still exists in the U.S. at all is in non-union states, in non-union shops.

As Steve Jobs said, "Those jobs are gone, and they're not coming back". Near the end, before they sold it to Canon, the NeXT factory producing laser printers required exactly two (2) full time workers to operate the entire factory.

yesterday
top

Ask Slashdot: Which Router Firmware For Bandwidth Management?

tlambert Re:Almost all router bandwidth management is shit. (97 comments)

OK, as someone who has been trying different methods of QoS over the past years, with varying levels of success, mainly to have my VoIP phone rock solid over DSL, I'm very interested in what you're saying.

Is there a reason this approach hasn't been implemented yet? Does it break something? If my router is lying to one my upstream router about its TCP window size, wouldn't that impact both the FTP and video stream?

You lie about the window size on a per connection basis, so no, since it's not a global policy, it's a resource policy by application, and potentially by port/IP tuple, so it's not a problem. The point is to keep the upstream router packet buffers relatively empty so that the packets you want don't have to be RED-queued. Nothing breaks because of it.

It generally won't work, unless everyone "plays fair", and the port overcommit ratio for upstream vs. downstream bandwidth is relatively low. As the downstream data rate increases to approach the upstream data rate, the technique loses value, unless you get rid of overcommit, or do it on a per-customer "flow" basis (as opposed to a per virtual circuit "flow" basis) within the upstream router itself, or move to a "resource container" or similar approach for buffer ratio allocation in the upstream router.

So in theory, Comcast (as an example) could do it if they made everyone use the router they supplied, and their routers all participates in limiting upstream buffer impact.

Maybe the next time they replace everyone's cable modems, they'll bother to do it?

Without the deployed infrastructure, it's easier to RED-queue and just intentionally drop packets, forcing a client to request a retransmit as a means of source-quenching traffic. This wastes a lot of buffers, but they probabilistically get through, and for streaming video, that's good enough if there's a lot of client overbuffering going on before playback starts (JWZPlayer, for example, is a common player used for pirated content that will habitually under-buffer so intentional drops tend to make it choppy).

For VOIP, unfortunately, forced retransmit causes things to just typically suck, unless you use a sideband protocol instead, where the router at the one hop upstream peer agrees to reserve buffers for specifically that traffic. This is why Skype is terrible, but your phone calls over your wall jacks which are actually wired to the same packet interface instead of a POTS line are practically as good as a land line or cell phone.

Google hangouts tend to get away with it because they are predominantly broadcast, and are either "gossip"-based CSMA/CD (ALOHA style) networks between participants (i.e. people talk over each other, or wait until the other end is done before talking themselves). It means they tolerate large latencies in which 1:1 VOIP/Skype connections won't. They can be a bit of a PITA for conference calls because of that (Google uses it internally, and gets away with it, but mostly because Google has its own, parallel Internet, including transoceanic fibers), but if Google employees never see the problem, they never fix the problem. Same way any company that assumes local-equivalent bandwidth works as well for their customers as it does for them (free hint to Microsoft inre: Office 386 there).

yesterday
top

Oracle Deflects Blame For Troubled Oregon Health Care Site

tlambert Never bring politics... (154 comments)

Never bring politics... to an electronic documentation of timeline fight with a database company.

2 days ago
top

Ask Slashdot: Which Router Firmware For Bandwidth Management?

tlambert Almost all router bandwidth management is shit. (97 comments)

Almost all router bandwidth management is shit.

Bandwidth management schemes currently used by everything you mention are all base on rate limiting packet delivery based on some mythical QoS value, and they ignore the actual problem that the people who are using these things are attempting (and failing) to address.

The problem is that the point of a border routers is to hook a slower border uplink to a faster interior connection; on the other end of the slower uplink, you have a faster ISP data rate. In other words, you have a gigabit network in your house, and the ISP has a gigabit network at their DSLAM, but your DSL line sure as hell is *NOT* a gigabit link.

What that means is that software that attempts to "shape" packets ignores an upstream-downloads or a downstream-uploads ability to overwhelm the available packet buffers on the high speed side of the link when communicating to the low speed side of the link.

So you can start streaming a video down, and then start an FTP transfer, and your upstream router at the ISP is going to have its buffers full of untransmitted FTP download packets worth of data, instead of your streaming video data, and it doesn't matter how bitchy you are about letting those upstream FTP packets through your router on your downstream side of the link, it's not going to matter to the video stream, since all of the upstream router buffers that you want used for your video are already full of FTP data that you don't want to receive yet.

The correct thing to do is to have your border router lie about available TCP window size to the router on the other end, so that all intermediate routers between that router and the system transmitting the FTP packets in the first place also lie about how full the window is, and the intermediate routers don't end up with full input packet buffers with nowhere to send them in the first place.

Does your border router do this? No? Then your QoS software and AltQ and other "packet shaping" software is shit. Your upstream routers high speed input buffers are going to end up packed full of packets you want less, and you will be receiver live-locked and the packets that you *do* want won't get through to you because of that.

You can either believe this, or you can get a shitty router and not get the performance you expect as the QoS software fails to work.

Then you can read the Jeffrey Mogul paper from DEC Western Research Labs from 1997 here: http://citeseerx.ist.psu.edu/v... ...after which, you should probably ask yourselves why CS students don't read research papers, and are still trying to solve problems which were understood 27 years ago, and more or less solved 17 years ago, but still have yet to make their way into a commercial operating system.

BTW: I also highly recommend the Peter Druschel/Guarav Banga paper from Rice University in 1996 on Lazy Receiver Processing, since most servers are still screwed by data buss bandwidth when it comes to getting more packets than they can deal with, either as a DOS technique against the server, or because they are simply overloaded. Most ethernet firmware is also shit unless it's been written to not transfer data unless you tell it it's OK, separately from the actual interrupt acknowledgement. If you're interested, that paper's here: http://citeseerx.ist.psu.edu/v... and I expect that we will be discussing that problem in 2024 when someone decides it's actually a problem for them.

2 days ago
top

IRS Can Now Seize Your Tax Refund To Pay a Relative's Debt

tlambert Re:Over 18 (630 comments)

Nothing you say says that Mr Saverin has gotten away from his US tax liability. Only by renouncing citizenship can one end the tax liability, and even that continues for some years (10 I think) after the renouncement.

He did renounce it. And he renounced it before the IPO. So his liability is for what he owed before he renounced it, which is ... not the $1.1B.

2 days ago
top

GoPro Project Claims Technology Is Making People Lose Empathy For Homeless

tlambert I think there's a more important question... (318 comments)

How many homeless volunteers took off with the camera and sold it to buy booze?

I think there's a more important question... how many mountain lions, gazelles, and other animals took off with the Harmless Radio Collars(tm) that Marlon Perkins had Jim Fowler attach to them while filming Mutual of Omaha's "Wild Kingdom"?

2 days ago
top

San Francisco's Housing Crisis Explained

tlambert Re:BS (357 comments)

Yes, it is quite large, in relative terms. The city of Pittsburgh is only about 30,000 people, meaning the % of the population in those 2 centers alone accounts for roughly 1% of the population.

Off by a factor of over 10; as of 2012: population of 306,211. That's 0.08%, not 1%.

3 days ago
top

San Francisco's Housing Crisis Explained

tlambert Re:The real deal (357 comments)

If those San Francisco residents who are "entrenched" had to pay for their taxes like new residents do, they would be paying 1.25% per year property taxes on the current value rather than the basis of when they bought the property.

That's a great reason to do what rental property owners do, and own a company that owns the property, instead of owning it themselves. Then if they ever want to sell it, they can sell if for a heck of a lot more money by selling the company, rather than selling the property, so the taxes don't go up any more than if you'd bought under prop 13 and never sold.

That's the McDonald's model (McDonald's happily admits to being a real estate company that happens to sell burgers and rents out properties their franchisees). It's also the same model that the Kaiser Family Trust uses.

3 days ago
top

San Francisco's Housing Crisis Explained

tlambert Re:Simple problem, simple solution (357 comments)

The only way to fix the Bay Area housing crisis is to build more fucking housing.

One of the things that isn't talked about is the amount of empty office and residential apartments in the Bay Area. It's actually worth more money to price them out of the range that people are willing to pay, and then take the "market rent you are not getting", and use it as a tax write-off. It's a common practice in China (Google "ghost cities"), and it's becoming more common in the Bay Area.

If you want to take a little trip on 101 between SF and SJ, it's easy to see a lot of empty buildings, and it's easy to see some of the mega-complexes that are going in in Redwood City and elsewhere, which are probably going to remain mostly empty as a tax write-off to balance out other income.

3 days ago
top

San Francisco's Housing Crisis Explained

tlambert Re:BS (357 comments)

I was talking with a friend(another ex-Pittsburgher) and he reminded me that both Apple and Google have recently opened relatively large campuses in Pittsburgh.

150 employees in an old cookie factory for Google, and 100 employees for Apple retail is hardly "relatively large"...

3 days ago
top

San Francisco's Housing Crisis Explained

tlambert Re:BS (357 comments)

They Bay Area is one of the few economically active places in the USA, that's why housing is expensive there.

If you want cheap housing, go to an economically dying area, like Detroit; or a place with no regulations such that chemicals leak into your house or explode in your face, like Texas.

Surely San Bruno would be more to one's liking...

Stated like someone who has never lived under an airport noise footprint. There's a reason that you see all the boarded up houses right under the flight path in all the movies... no one actually wants to live there.

3 days ago
top

Inside the Stolen Smartphone Black Market In London

tlambert Re:Changing IMEI is NOT illegal (109 comments)

Under a 2002 law it was made illegal to change the IMEI unless you're the manufacturer.

It's a Chuck Schumer http://en.wikipedia.org/wiki/C... bill that he introduces every couple of years, it gets thrown to the Judiciary committee, and then it dies in committee. Like clockwork. Here's the text of the current bill, which is presently dying in the Judiciary committee right now: http://thomas.loc.gov/cgi-bin/...:

The people who care about this are the people who traffic in stolen phones, and the people who want to buy a handset and use the same SIM in a different GSM phone, or who want to change the MEID on a new phone so that they don't have to re-up their Verizon contract once they are paying month-to-month for their CDMA phone. And the phone companies, that want you to have to re-up your contract to get a new phone. It's the same reason there's about zero incentive to update the OS in Android phones, since if they never update the OS, in order to get the new +0.0.1 version number bump, you have to get a new phone, and the manufacturer gets to sell another phone, and the phone company gets to lock you into a new 2 year contract every 18 months when the new shiny object becomes available.

Since it's a PITA to get a phone unlocked for international roaming, since it has to be listed by ID with the cell network in the country you are traveling to, and it can take many weeks to get them to actually unlock the thing, and do the registration, most times it's just easier to clone the IMEI to your old phone, and then either destroy the old phone, or do an IMEI swap. This is a common "repair/refurbish" technique, and you'll notice that it's allowed under the Schumer bill.

You might also see both NASDAQ OMX Group and TeleCommunication Systems Inc. campaign contributions, and you'll notice contributions from Facebook in 2012, the year the bill was introduced, when Facebook was going big into the mobile market. http://influenceexplorer.com/p...

Little bit of vested interest there.

4 days ago
top

Will This Flying Car Get Crowdfunded?

tlambert Re:Not getting funded. (157 comments)

Flying cars are technically possible.

Flying cars however are not desirable for everyday drivers: they have a hard enough time managing 2 dimensions, we don't need them to occupy a third. So unless they're fully automatic in flight mode (with manual control disabled), flying cars can only be flown by trained pilot.

Rename them "manned drones" and outsource the piloting to third world countries. Problem solved, since the FAA is OK with drones in U.S. airspace.

http://online.wsj.com/news/art...

4 days ago
top

IRS Can Now Seize Your Tax Refund To Pay a Relative's Debt

tlambert Re:Over 18 (630 comments)

The only way for U.S. citizens to avoid this would be to go through a process to renounce their U.S. citizenship, which is not practical or desirable for most people.

Except for Eduardo Luiz Saverin, the Facebook co-founder who was basically paid by California and the federal government about $1.1B to move to Singapore. For him, it's was a pretty desirable and practical decision, given that the bite for short term capitol gains is treated as ordinary income by California for taxation purposes.

Who would have thought someone with a degree in economics from Harvard knew how to do money math? Uh... everybody? Hello?

4 days ago
top

93 Harvard Faculty Members Call On the University To Divest From Fossil Fuels

tlambert Especially solar cells and carbon fiber windmills. (214 comments)

Especially solar cells and carbon fiber windmills. All that nasty fossil silicon and fossil carbon from previous supernova. It's clearly a limited resource, in any case.

about a week ago

Submissions

top

It looks like Apple has started paying for product placement

tlambert tlambert writes  |  about a year ago

tlambert (566799) writes "From the well-that-didn't-take-long department:

It looks like Apple has gone back on their long-standing tradition of refusing to pay for product placement; at the end of the Hulu premiere episode for the television show "Deception" in which multiple Apple products appear, there is a clear statement in the credits: "promotional consideration furnished by APPLE". The statement occurs at time hash 44:49, 6 seconds before the end of the video."

Link to Original Source
top

99 year old woman reading again on her new iPad

tlambert tlambert writes  |  more than 3 years ago

tlambert (566799) writes "This is a cute story (with video) about a 99 year old woman and her iPad. It's interesting because of the accessibility angle. After years with glaucoma, she's able to read books again due to a combination of font scaling and an adjustable backlight intensity, according to the article."
Link to Original Source

Journals

tlambert has no journal entries.

Slashdot Account

Need an Account?

Forgot your password?

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
Sign up for Slashdot Newsletters
Create a Slashdot Account

Loading...