zw123456

27 ms·

271.
by zw123456 5y ago
agree iperf to a server is a good test as long as the 5 tuple is rotated so they dont figure it out.
272.
by zw123456 5y ago
Yes, I do this as part of my job. I help manage a system that does something like this for a large network operator. We have test phones that run TWAMP, RFC 6349 and iperf (and a few other tests) on a routine schedule to special test server
273.
by zw123456 5y ago
Agree. It's funny how people I know who are "non-tech" intuitively understand that of course speed-tests are rigged, but tech people somehow think that the same place that allows Facebook pages that say that the jews have spa
274.
by zw123456 5y ago
It's not illegal to make a speedtest that says you got some big value that is BS. It's illegal to put arsenic in a bottle and label it Vitamin C. It's not illegal to call you TV channel "something" news then just ma
275.
by zw123456 5y ago
Yes, and, the joke in the industry is that network speed tests are to network performance what the Volkswagen Diesel was to emission tests :). All carriers implement various types of throttling or rate limiting, for a lot of reasons (anti-d
276.
by zw123456 5y ago
I think the conundrum is people want a computer to read their minds to make things easier for them, but when it does, it creeps them out. The solution, IMHO, is less technical and more psychological. If I was trying to replace FAANG, that
277.
by zw123456 5y ago
what is the optimal voltage based on empirical data ?
278.
by zw123456 5y ago
Right, agree. But then there is the tradeoff of the popularity and availability of 12VDC devices due to RV/Boating. But strictly from a technical point of view you are spot on.
279.
by zw123456 5y ago
There is some validity to using DC distribution within a building or domicile, it can make it cheaper and more reliable to have a central power supply and battery system. That is not a new idea obviously, that exact approach has been in use
280.
by zw123456 5y ago
Always thanks to Ken for all the fun "memory" lane stuff. That board reminded me of an old PDP1 board from way back when I was doing undergrad in the 1970's and we had a "junker" PDP1 that no longer ran (replaced wi
281.
by zw123456 5y ago
This reminds me of back when I was at Bell Labs back in the 1980's and there was a "user manual" of how to crash the Unix OS on the PDP11's in our lab. The idea being if you just tell people how to do it they won't
282.
by zw123456 5y ago
Yup, it's an age old ham gag for sure. We were doing it to show off the power of our invention of course. The funny part was how when we demo'ed it for some exec's they sort of covered their privates when they saw that neon
283.
by zw123456 5y ago
There were a number of very interesting items in R17, the one I have been keeping an eye on since they started the study group on it is: > Non-terrestrial networks (NTN): following the Release 16 study, Release 17 introduced 5G NR suppo
284.
by zw123456 5y ago
It's all about the watts baby. When I was a kid I made an AM radio receiver with a safety pin and a piece of zinc and a crystal earphone. Later in life, working on an experimental MW system at Bell Labs, a fun gag was to put a Neon lam
285.
by zw123456 5y ago
Very famous study https://en.wikipedia.org/wiki/Stanford_marshmallow_experimen... Delayed gratification is hard, believe me, had my Dad not literally screamed at me to sign up for the 401K when I was 24 and entering th
286.
by zw123456 5y ago
ya, it was stupid, the interest was about $300 or something. I would have paid the original amount but I just screwed up and mis-placed the 1099. It was a gotchya game. I think this could be why people hate taxes so much, of course we all h
287.
by zw123456 5y ago
Exactly my complaint as well! They could send me a monthly statement like my city government does. Instead, they wait a year to let me know I slipped up and then charge me interest. Guys, if you know I slipped up now you could have told m
288.
by zw123456 5y ago
German efficiency! I like it, my city government sends me a statement once a month, says you owe this amount for police, that amount for fire, some other amount for sewer and water, some amount for schools. Maybe I disagree with some of th
289.
by zw123456 5y ago
Exceptional != Best
290.
by zw123456 5y ago
well, I am walking around free so, for sure you don't go to prison but you pay a penalty perhaps. In my case I just paid it. It was an honest mistake and they did not bust my chops over it, they did charge interest, which is stupid. Bu
291.
by zw123456 5y ago
Yup, dumb mistake on my part, so I track it better now. The point is, do I really have to do all this work tracking everything to guess which card they are hiding behind their backs. It's kinda dumb IMO.
292.
by zw123456 5y ago
ya, I am sure you are right, I get a bunch of them and I missed a small one. But whatever, the point is, they could just send me a statement.
293.
by zw123456 5y ago
I remember when I first started working at Bell Labs, way way back in 1978, I had just got my MSEE and had the world by the tail. But there was some old timers there that, I learned to really respect. They spoke more slowly than I did and s
294.
by zw123456 5y ago
ya, so why not just send me a statement once a month, the power company does that, the cell phone company does that, the city I live in does that, etc. Just send me a statement, you made this, you get this much deduction for the other crap
295.
by zw123456 5y ago
I have had that similar feeling and have joked around that Amazon is reading my mind. I go outside and see bird poo on my deck and driveway and they send me an add for a pressure washer. Wow, how did they do that, ESP? It sure feels like
296.
by zw123456 5y ago
A few years back I got audited, and it was called an "electronic audit" by the IRS. Which basically meant that they had their computer systems scour a bunch of the bank records and discovered that I had forgotten to claim a 1099 f
297.
by zw123456 5y ago
The basics are this, the lower the frequency because lower frequencies propagate better ( https://en.wikipedia.org/wiki/Free-space_path_loss ) but... you will get less capacity, because at the lower frequencies there is
298.
by zw123456 5y ago
Both wired and wireless are regulated by the FCC, neither have net neutrality restrictions anymore, the went bye bye in the U.S. at least, a couple years ago and I seriously doubt it will come back ever. > The FCC declared mm-wave a nati
299.
by zw123456 5y ago
Me too, nothing beats fiber if you can get it. I used to have Fios where I used to live and nothing beats it, but where I live now, you cannot get any fiber to the home, but I can get the mm-wave 5G and that is a pretty close second, the sp
300.
by zw123456 5y ago
I agree with you on this. I search for tech topics a lot and google offers an option to search "scholarly articles". I like that option as sometimes a tech term gets confused with something else. It would be great if there was a

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