Beta
×

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

New Research Suggests Cancer May Be an Intrinsic Property of Cells

Bengie Re: "Not eradicated" isn't needed (173 comments)

Most people get cancer after they've reproduced, so there is virtually no evolutionary pressure.

10 hours ago
top

Study: Ad-Free Internet Would Cost Everyone $230-a-Year

Bengie Re:I remember when the Internet had no ads (529 comments)

Blocking ads and privacy filters are a self fulling prophecy when it comes to ad quality. If you don't let yourself get tracked, your ads are going to suck. The ads I typically see are quite useful, but I don't have the money to purchase the items. Kind of nice to know when NewEgg has a 24 hour deal on Seasonic power supplies or Amazon has a deal on an HP managed switch I've been eyeing up. When I use privacy filters, I get all kinds of really crappy non-targeted ads.

yesterday
top

Study: Ad-Free Internet Would Cost Everyone $230-a-Year

Bengie Inference (529 comments)

To me this means that on average, companies are making about $230/person/year in ad revenue. This means the ad companies are paying out a minimum of $230, not including increased bandwidth costs, management overhead, and other costs involved with supplying ads. So as a whole, the entire economy will save money than $230/person/year, meaning more money to be used where it should be.

I was told by once of my professors that about 50% of the cost of enterprise grade software is marketing. This means the software could be 50% cheaper if they weren't trying to shove it down my throat. At the same time, without marketing, I may not have known about the software.

yesterday
top

Heartbleed To Blame For Community Health Systems Breach

Bengie Re:design (86 comments)

I see no good reason for this separate infrastructure to connect to the Internet.

Let me know how your IT can remote in from home without having an Internet connection at some point. Remoting in is nearly a requirement of all information systems.

2 days ago
top

Netflix CEO On Net Neutrality: Large ISPs Are the Problem

Bengie Re:A little naive perhaps? (181 comments)

Netflix's Beast box full of SSDs that can handle 50k customers streaming HD have a peak load of 150watts and takes up 2Us. 20gb of bandwidth for the cost of $20 of electricity per month is not a bad deal. Maybe the ISP would be more happy paying $40k/month of dedicated bandwidth from Level 3.

2 days ago
top

Groundwork Laid For Superfast Broadband Over Copper

Bengie Re:Fibre optic is almost her (93 comments)

Per unit of distance, fiber is much cheaper than copper. 144 strands of fiber in a single cable for about 1/4 the cost of a single coax. Not sure about RJ11. Anyway, fiber itself only makes up about 1% of the total cost of a full fiber ISP. Trenching the fiber from the CO to the house is only about 30%-40% of the cost. All of the computer equipment in the CO and the homes is about 10% of the cost.

If you were starting a new ISP with absolutely no infrastructure, fiber is drastically cheaper for initial capital cost and about 20% cheaper for the ongoing costs. The only place copper wins out is that it's quicker to upgrade existing copper infrastructure, but it is NOT cheaper. Not by a long shot. Comcast paid about 8x more per customer to upgrade from DOCSIS2 to 100mb DOCSIS3 than Google fiber paid to create a whole new 1gb fiber network from scratch. On average, Google Fiber is paying about $700 per customer to get fiber to the house, but not install it; About double the price to install it. Comcast paid almost $10k per customer to go from 2 to 3.

about a week ago
top

Groundwork Laid For Superfast Broadband Over Copper

Bengie Re:Fibre optic is almost her (93 comments)

But to get those speeds, they need to install a lawn wart, which costs more than just installing fiber. $200 of equipment can send 1gb/1gb over 80km of fiber. But instead we talk about $10k of equipment to send 500mb over 100m of copper. It's faster to deploy and a more familiar tech, but it's slower and more expensive.

about a week ago
top

The Flight of Gifted Engineers From NASA

Bengie Re:Not Surprising (160 comments)

What, exactly, was the long-term benefit of NASA 'space exploration' in the 1960s?

Cell phones, microwave ovens, satellites, computers, huge leaps in aeroengineering. The list goes on. NASA has single handily spurned nearly all technology that we currently use. Prior to NASA, there was almost no demand for the research required for our current tech.

All tech started as a "Waste of money". An amusing physical phenomena with no practical application until it became reliable and cheap enough for an engineer to make something useful with it.

about a week ago
top

The Flight of Gifted Engineers From NASA

Bengie Re:Follow the money (160 comments)

As a beautiful picture of a distant galaxy shown to a hungry child is not going to help that child when he's hungry, instead he needs food on the table, so that's how you make decisions on how to prioritize and spend money when the money is tight.

Money represents time and our current society has excess beyond belief. Anything that someone does that isn't farming is excess time. Money is not an issue. You want to talk about feeding the poor? It's not a money issue. The poor don't need to be fed by others, they need be educated and given a safe and healthy environment. Sending them food actually create more problems than it solves. Corruption forms around the influx of food donations and exacerbates issues.

What people once thought to be wasted money in tech that no one will ever use is now the backbone of EVERYTHING.

In our current point in history, we have a lot of excess time. We should be spending it exploring new tech and getting off this fleeting planet. It won't be habitable forever. We're due for another mass extinction, we best get moving, not getting chained down worrying about starving children in civil war torn areas.

about a week ago
top

Errata Prompts Intel To Disable TSX In Haswell, Early Broadwell CPUs

Bengie Re:Not all that surprising... (131 comments)

Computer per watt, AMD is lacking. When you're limited by power, you can get almost 2x the compute from Intel. Even in the ideal situations, AMD is almost only faster than Intel for compute loads with little sharing that resemble parallel work similar to GPU loads.

about a week ago
top

The IPv4 Internet Hiccups

Bengie Re:Is IPv6 "perfect" or will there be an IPv8? (247 comments)

IPv6 is vastly simpler, just different. I know a few datacenter admins and they all say IPv6 is a god-send to organizing and managing their networks. I grew up with these folks and they're quite smart from my perspective, so I trust their judgement. My one relative, who also runs a datacenter, was asked to come as a guest speaker for a conference, where he talked about designing a distributed datacenter storage system for high reliability and performance for R&D type workloads. He wants to do away with IPv4 in his multi-petabyte logical size storage network. And his 30gb/s uplink to Level 3... MMmmmmm..... Directly peered with almost every Tier 1 and many other networks. Level 3, HE, Sprint, AT&T, Verizon, NetworkLayer, Rackspace, Comcast, Charter. Fun place to work. Not only directly connected to these places, but also directly connects to 4 different IXs.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Ipv6 to ipv4 interoperability is only way (247 comments)

IPv6 traffic is growing 300% every year and IPv4 traffic is only growing 50% every year. Give it a few more years. Once the tipping point is reached, IPv6 will become center stage.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Ipv6 to ipv4 interoperability is only way (247 comments)

Your "solution" is a bunch of horrible hacks that don't even work with DNSSEC. Essentially you have "NAT" functioning at the DHCP+router+DNS level, all conspiring to mangle packets in concert.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Lack of incentives...? (247 comments)

New IP rules are going into affect where you must PROVE every year that you need your IP addresses, otherwise they will be forcefully reclaimed. Transfer of IP address will now be charged $5 per address. They're going to start ramping up IPv4 costs to encourage ISPs to switch.

Imagine if your business suddenly lost internet connectivity because your IP blocks have been reclaimed. You're going to be down until you can find an alternative solution. Enjoy.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Yes, Please (247 comments)

Don't worry, that 10 year old router won't be able to support the 100mb+ speeds of more current ISPs. When they speed test and get 15mb and wonder why, they will eventually purchase a new router that will support IPv6.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Betteridge (247 comments)

Core routers only use the first 48bits as that's the smallest block that is routable on the Internet. Which is why IPv4's /24 vs IPv6's /48 explains the routers supporting 1024K IPv4 routes or 512K IPv6 routes or a 512K/256K split. Exactly 2x difference. But IPv6 has sparse allocations resulting in about an effective 10x reduction in the number of routes.

about two weeks ago
top

The IPv4 Internet Hiccups

Bengie Re:Is it time to switch to all IPv6 yet? (247 comments)

In many cases, the "work around" is to use software routing instead of hardware routing. In the cases of the Cisco routers linked above, their TCAM can be re-partitioned, then restarted. But with the rate of IPv4 route fragmentation, it will only buy so much time. The fix is to use IPv6 or get newer hardware with a larger TCAM.

about two weeks ago
top

The Technologies Changing What It Means To Be a Programmer

Bengie Re:What? (291 comments)

Speaking on the topic of post optimization of hotspots, architectural design optimizations are important before any code is written for anything that may require performance. Some performance issues cannot be fixed after, and in many cases that I have witnessed, you could not phase in changes because the bad code design that led to the slow performance also limited refactoring, such that phasing in the changes would be worse that waiting for the entire rewrite to be completed.

To anyone who thinks they can start coding and fix/optimize their design mistakes after, ignorance is bliss. Design optimizations are one of the few premature optimizations that are almost a requirement for anything that requires scalability.

Profiling the kind of issues I deal with doesn't help much. Low CPU, low IO, low system call, low kernel time, low lock contention. Choose your poison. Many people are left scratching their heads wondering why the profiler doesn't show almost any hot spots, and the few hot spots yield little gain once optimized. Yet I get in there and tear things apart and can gain at least factors and many times magnitudes because the designer didn't understand how the entire system works as a whole.

about two weeks ago
top

Slashdot Asks: Should Schooling Be Year-Round?

Bengie Re:No, school should not be year-round. (421 comments)

I also have to say that school was inherently baby sitting and busy work. Having dropped out of normal school with about a 2.5GPA to be homeschool for several years, where I just watching TV and played on the computer, was the best thing for me. I did almost no homework during that time and my mom helped me complete all the minimum requirements. Effectively "cheated".

I eventually went back to graduate from public school to make it easier to get into college. I stay up until 1am every night playing Diablo 2 and slept through my classes, and I now had a 3.7GPA and I didn't get any help from my mom(single parent) this time around. I some how managed a 101% in my math class. During the the study portion of math class, the other kids would wake me up and ask for help. Ironically, math was my worst subject prior to homeschooling.

Getting away from school let me recharge my brain. I found myself looking stuff up online with my 28.8k modem. In between browsing porn or watching anime, I found myself interested in stuff like math and computing. It reinvigorated my interest to learn that years of soul crushing "schooling" almost destroyed. I went on to a University, which I was originally advised against because of my horrible grades pre-homeschooling, where I went on to get a 3.2 GPA, with a 3.8GPA in my major. I immediately got hired after graduation at a great company where I have been working for 10 years now, where my talent is greatly appreciated.

I guess you could say that our current state of schooling is so bad that not doing schooling and browsing porn and watching anime all day was better for my mental health as a 13-16 year old. I will never blindly trust a school to educate my children. When that day comes, I will make sure my children enjoy learning.

about two weeks ago

Submissions

top

Resolving IP to MAC address across a router

Bengie Bengie writes  |  about 7 years ago

Bengie (1121981) writes "From what I know about networks, you can't find out the MAC of an IP across a router. At some point I stumbled across a program that does just this. The only google hits I get talk about Netbios. Being able to do this would help out IT dept because our back-up registration page pulls MAC info from our DHCP server, but the DHCP database only syncs with our back-up database every 24 hours. If we build a new computer to replace an old one, our registration page can't get the new MAC for the Wake-on-LAN info until 24 hours later. We could use netbios if we had to, but that's kind of shady and won't work for our Mac computers since they don't have netbios. Is there a way of resolving the MAC of an IP across routers?"

Journals

Bengie has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?

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>