And snapshot can benefit backup. Since some software need to be shudown to do backup, minimize the down time is important. The snapshot can make down time is almost stop and restart time, and the software can be online again and we can do backup on snapshot in background.
Coelacanthus
joined 2 years ago
In fact, most manufacturers save money and don't shield the cable, forcing half-speed USB 1.1, which is enough for all mice and keyboards - less than 50 kb/s of the available 6 Mb/s is required even for 240Hz polling. High-end mice might have USB 3.0 (9 pins instead of 4 in the plug) but there should be no practical difference between 3.0 and 2.0 speeds.
When speed is enough, latency became an issue. Although with 8kHz poll rate (USB 2.0 half-speed and full-speed can only get 1kHz poll rate), the latency will be 125µs at least. But for USB 3.0, it gained two ways to improve latency: 1) it can send Bus Interval Adjustment Message to adjust latency to 13.333µs (around 75kHz); 2) it can switch to async mode. Host no longer poll the device, instead, the device notify host via ERDY.
Of course, I don't know how many devices utilized these features.
For forecast, you can selfhost a Open-Meteo. But note this need a lot of RAM and storage to run the weather model.
HM-SMR works better than normal DM-SMR, but it's rare and limit the filesystem choice: none on Windows and f2fs or btrfs on Linux.
Suggest use fsfreeze --freeze to block all access operation to create a stable image without unmount the SD card. (And release it later using fsfreeze --unfreeze.)
BTW, this feature was created by XFS and was moved to VFS in Linux 2.6.29 so all filesystems supported by Linux gained this feature.
and even without it, you'll get 150mA @ 5V by default out of the USB 3 host upstream and up to 900mA with some pretty basic USB negotiation in a protocol that dates from USB 1.0
That's wrong. With USB Type-C, you can get the power up to 3A @ 5V with just two 5.1kΩ resistor on CC pins.
Oh. It's great. But it seems there is only armv7a build on IzzyOnDroid repo while upstream has four architecture builds. cc @IzzyOnDroid@floss.social Is it a misconfiguration on IzzyOnDroid side?
Docker will set the default behavior of FORWARD chain to DROP, and then this make the home network of my friend off from the internet completely...
https://docs.docker.com/engine/network/packet-filtering-firewalls/#docker-on-a-router