19 posts • joined 22 Aug 2018
You won't find many drives that can sustain more than 1Gbps, even sequentially, definitely not random reads/writes. You'll only see that briefly to/from cache. Besides, SAS and SATA are higher speed in part so they can be shared across several drives. Ethernet switches give everybody the full 1Gbps. And let's not get into overhead. USB3 claims 5Gbps, but is actually a bottleneck to drives than can't sustain 1Gbps.
I may be able to shine a little light in the darkness... I e-mailed email@example.com a week ago because I got a spammy e-mail specifically offering money to write product reviews on Amazon This is to an e-mail address I only give out to family and retailers I similarly trust with my credit card data.
It's not the first time I've gotten targeted emails that seem to know I'm a highly rated reviewer on Amazon, but this time they failed to use the BCC field and supplied me with a list of dozens of e-mail addresses that clearly look valid. Not remotely sequential, not dictionary words stuck together, not brute-forcing all random combos, etc. Clearly a list of personal e-mail addresses.
I requested they check the list of addresses against their user database to confirm or disprove my strong suspicion that their website is somehow being coaxed into leaking private customer e-mail addresses. Then came the Amazon e-mail early this morning...
Purely speculating now, I wonder if this is related to the phenomenon of lots of new merchant accounts popping up on Amazon, which claim to have millions of items at absurdly low prices, then either send a tracking number for unrelated packages (to stall for time) or else don't even bother pretending they have ever shipped anything. In either case they're playing a numbers game, waiting until their feedback and refund rate is bad enough that Amazon blacklists them, but in the mean time collecting angry e-mails forwarded through Amazon's e-mail proxying system of people asking where their items have gone.
Re: Amidst all the wailing and knashing of teeth here
Linux has long had pretty much everything you say it doesn't:
Live OS upgrades: KSplice has been around for a decade.
Inline memory compression: Compcache / zram has been around for a decade, also.
Hypervisor overcommit memory: KVM has had over-commit for at least a decade, Xen even longer. VMware longer still.
ASO/DSO (automatically tune the operating system: Linux systems need vastly less (if any) tuning of parameters, compared to traditional crufty Unix systems.
Workload Partitions: Linux has rather advanced containers in OpenVZ/LXC/Xen for over a decade.
Suspend / Resume: KVM/LXC/etc. suspend / resume just fine.
Re: You may have got it the wrong way around!
"IBM sold off the x86 hardware business to Lenovo and the Apple/Microsoft partnerships are not interested in alternatives to OSX and Windows."
Hmm,.. I recall Dell occasionally steps into the fray with Linux developer laptops and Windows-free desktops. Dell isn't as much of a direct competitor to IBM as others like HP, Oracle, etc, so a partnership where Dell boxes get shipped with IBM logos at a marked-up price to big IBM shops might work.
Re: Breaking DRM to perform "unauthorized repairs"
Copyright is one of the issues both sides agree on. Hollywood is a major contributor to Democrats who doesn't want to see that well dry up, and lots of other business interests make money from longer and stricter copyright, so the Republicans are on-board too. The lack of opposition is why copyright has been extended practically indefinitely, despite that being blatantly unconstitutional. Robbing the public domain while giving nothing back has been highly profitable for Disney and many other mega media corporations.
"So, HOW BIG does that mirror need to be?"
They say 8 times as bright as the moon. Moonlight is under 1 lux, so call it 8 lux. Full sunlight is around 100,000 lux. So you need a surface area of around 8/100,000ths the area of the city you intend to illuminate. If I did my quick maths right, You need a reflector of 48x48ft for every square mile of city you wish to illuminate.
- "Why not an ACTUAL jumper(s) on motherboards to enable diagnostic modes, management engines, BIOS/EFI updates etc? You should need physical access, more than USB or other socket on outside and NEVER default access by software without a HW jumper enabling it."
I'm not going to pay data-center staff to go around swapping jumpers on hundreds of servers every time we want to update the firmware, then put them all back again. That goes double if we want to do the firmware update in the middle of the night when load is low.
You can make your OS as lightweight as you want, but if you want to browse modern web pages, Firefox / Chrome / etc are going to chew up at least a couple GB of RAM on their own, and make you sorry you tried it, if you have less. I only wish there was a lightweight browser out there which could render modern web. Now THAT would be a huge productivity boost for everyone.
Re: Cue firestorm
(1) That's just ignorant. Encryption is math, and mathematical proofs are absolutely fundamental, untouchable by any technological progress. It only just happens that the currently popular factoring systems of public key encryption ala RSA are potentially vulnerable to quantum computers. There are a number of alternative, existing methods of public key exchange which are absolutely invulnerable to quantum computers. There's even a full Wikipedia page just on the subject of "Post-quantum_cryptography".