| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
Hello, brethren :-)
As it turns out, the current version of FFmpeg (version 3.1 released earlier today) and libav (master branch) supports full H.264 and HEVC encode in VAAPI on supported hardware that works reliably well to be termed "production-ready".
See how a minor change to your commit message style can make a difference.
Tip
Take a look at git-conventional-commits , a CLI util to ensure these conventions, determine version and generate changelogs
#Notes this is a fork from GMK87 adapted to gmk87, if you notice something wrong or add any other feature, just ping me here on github.
English manual for the ZUOYA GMK87 Mechanical Keyboard. Made from the printed version (Original).
Europe
This is a list of general-purpose optimizations for C programs, from the most impactful to the tiniest low-level micro-optimizations to squeeze out every last bit of performance. It is meant to be read top-down as a checklist, with each item being a potential optimization to consider. Everything is in order of speed gain.
Choose the best algorithm and data structure for the problem at hand by evaluating:
| 10-Bit H.264 | |
| For all those who haven’t heard of it already, here’s a quick rundown about the | |
| newest trend in making our encodes unplayable on even more systems: So-called | |
| high-bit-depth H.264. So, why another format, and what makes this stuff | |
| different from what you know already? | |
| First off: What is bit depth? | |
| In short, bit depth is the level of precision that’s available for storing color | |
| information. The encodes you’re used to have a precision of 8 bits (256 levels) |
This explains how to build mesa from source, and how to use the custom built mesa to run some apps and games, without needing to replace the mesa libraries that your operating system runs on.
Let's assume that you are using an x86_64 system.
| ## Make a handy json file to automatically install the needed packages for Radarr to run | |
| echo '{"pkgs":["libunwind","icu","libinotify","openssl","mediainfo","sqlite3","ca_root_nss","libiconv","nano","curl","wget"]}' > /tmp/pkg.json | |
| ## Create the jail using that json file we created earlier. | |
| ## I use 12.2-RELEASE as it's the most recent at the time of writing. | |
| ## Replace <IP>, <MASK> and <GATEWAY> with your own. | |
| iocage create -n "radarr" -p /tmp/pkg.json -r 12.2-RELEASE ip4_addr="vnet0|<IP>/<MASK>" defaultrouter="<GATEWAY>" vnet="on" allow_mlock="1" allow_raw_sockets="1" boot="on" | |
| ## Delete the now useless file we created at the beginning. | |
| rm /tmp/pkg.json |
Make sure the if value is correct! If doing this over SSH then open a TMUX session first... or else...
dd if=/dev/YOUR-DEVICE conv=sync,noerror bs=64K | gzip -c > /home/portaj/macbook.img.gz
NOTE: You might not want to compress the image. It just means you have to uncompress it later to mount it. If you're planning to access the data soon, or frequently, don't compress it.
Save it in the same directory as the compressed image so later on if you decide you want to mount or extract data from the image you can see the partition structure without having to decompress the whole image. There might be some other ways to mount a compressed image.