kijiki

22 ms·

211.
by kijiki 10y ago
On x86-64 Debian hosts you can install binfmt-support an qemu-user-static packages. You'll need to copy the qemu-armeb-static binary inside the container image. Then you just build inside a container normally, and the kernel will run
212.
by kijiki 10y ago
> How come is the difference that big ? To a first approximation, CPU and RAM are required to get your site up and running at all. Bandwidth is less so. Bandwidth scales up as your growth scales up. So it makes sense for cloud provider
213.
by kijiki 10y ago
Namespacing would work, but it might be simpler to use multiple routing tables and "ip rule" to match each app and direct it to the right routing table. You can use iptables to match on the process and set a mark on the packet th
214.
by kijiki 10y ago
You have the source code to Signal. You can see exactly how it protects you from government (and other) surveillance. To be clear: it does better than anything else you can find in an app store.
215.
by kijiki 10y ago
That would be a disaster. Without active queue management, a single bulk upload can break DNS. When the bottleneck link (usually your cable/DSL modem) is saturated by the bulk upload, it will start dropping new packets that come in wh
216.
by kijiki 10y ago
No, per the linked check-in, the Egyptian govt would have to block OWSCensorshipConfigurationFrontingHost, which is " https://google.com" . That is the domain looked up in DNS and included in the TLS Certificate's
217.
by kijiki 10y ago
Thanks for the pointers! Your 3rd example is the one I bought, but it is clear, so doesn't show up on a black laptop. They don't seem to have a non-clear version of that one. The non-clear ones they do have are just the spiral, w
218.
by kijiki 10y ago
Huawei is an OEM like cisco. The ODMs that actually make most of the networking gear are Quanta, Accton, Celstica, Alpha Networks, and Delta Networks. If you want to buy "white box" switches from those ODMs, you can do so through
219.
by kijiki 10y ago
I've been completely unable to find a Debian sticker that: a) is big enough to see from more than 3 feet away b) that works on a black laptop. Do you know of a good supplier?
220.
by kijiki 10y ago
If you're going to spend top dollar on Arista/Cisco/EMC/NetApp, you might as well stay in the cloud. None of the clouds use any of that super-expensive gear, so if you're going for cost savings, you'll need to
221.
by kijiki 10y ago
Latency, power and cost. The PHY has to do a lot of forward error correction and filtering, so it adds latency (for the FEC), power (for all the DSP) and cost (for the silicon area to do all of the above).
222.
by kijiki 10y ago
Android and Linux is (shockingly) also automatic. I plugged my phone into my laptop because I didn't want to run down the phone battery while using it as a mobile wifi hotspot. I was shocked to notice that I had Internet access on th
223.
by kijiki 10y ago
In my experience, you'll be dealing with firmware glitches even with mainstream OEMs. You can avoid a lot of the RFP/RFQ and scale issues by going to a ODM/OEM hybrid like Edge-core, or Quanta. Or Penguin Computing or Super
224.
by kijiki 10y ago
At the scale gitlab is talking about, it is usually better to source from a vendor that doesn't provide ultra-fast turnaround, and just keep a few spare servers and switches, so you can have 0-hour turnaround for hardware failure. Get
225.
by kijiki 10y ago
If you're rolling your own, you can tune these things. For example, in this case, since they're IOPs-bound first, and probably network-bound second, you can cram 16 SSDs in a box, and then put a dual-port 25Gig Ethernet NIC up to
226.
by kijiki 10y ago
The BIOS way to do this is with an Option ROM. During boot, the BIOS scans for a special signature, and jumps to a fixed offset in that block. The OPROM init routine then hooks the various software interrupts that the BIOS, boot-loader an
227.
by kijiki 10y ago
Not in US court. All US cases so far have settled. Though given that the pro-GPL side is usually just looking for compliance, not $$$, those settlements suggest serious doubts about winning in the minds of the alleged violators. There hav
228.
by kijiki 10y ago
NetFPGA. Been around in various revisions since 2007. https://en.wikipedia.org/wiki/NetFPGA
229.
by kijiki 10y ago
Microsoft doesn't use OpenDaylight. I've never heard of any serious non-research uses of it, and I've spent a good bit of time looking. Every time I've heard a rumor, it had turned out to be false.
230.
(2002) Home-Built Autonomous High Altitude Glider(canuck-boffin.net)
2 points by kijiki 10y ago|0 comments
231.
by kijiki 10y ago
Used. AMD64 removed segment limit checking. Base offsets are still applied for %fs and %gs, but not other segment registers. We got them to add a flag to re-enable it (and SAHF), but Intel never had it. Nowadays it is all Vanderpool&#x2F
232.
by kijiki 10y ago
Not really, the Tilera chips are MIMD with a coherent shared memory. The CM was a SIMD, and each processor has its own independent memory. A Sun workstation submitted the (single) stream of instructions to the array of processors. Having a
233.
by kijiki 10y ago
Thousands of cycles for a SYSCALL/SYSRET on a reasonably modern Intel/AMD CPU? I think you should try to measure that.
234.
by kijiki 10y ago
The issue here is the vmkernel, which is VMware's proprietary OS that runs "worlds" which are similar to processes and run the virtual machine monitors that run the VMs. It has its own network stack, derived from FreeBSD&#x2
235.
by kijiki 10y ago
Paradise, not S3.
236.
by kijiki 10y ago
1 light-nanosecond is about a foot. 1 sound (at sea level)-millisecond is also about a foot. Meaningless coincidence, but still handy for back-of-the-envelope calculations. Suck it metric system! =)
237.
by kijiki 10y ago
One reason you sometimes "need" BGP for this is because the networking team is highly skeptical about their ToR switches accepting routes from the server team's hypervisors/containervisors. BGP route filtering on the To
238.
by kijiki 10y ago
https://en.wikipedia.org/wiki/Distant_Early_Warning_Line Canada wasn't exactly neutral.
239.
by kijiki 10y ago
https://www.youtube.com/watch?v=01WpGDwSPpg The US tested a live Polaris in 1962. They were responsible enough to cook it off at 11,000 ft, a real combat launch would likely have been detonated closer to the ground.
240.
by kijiki 10y ago
A good book discussing the drivers (and some of the technology involved) of increasing ICBM/SLBM accuracy is "Inventing Accuracy: A Historical Sociology of Nuclear Missile Guidance". https://mitpress.mit.edu/b

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