pastleo

Setup face recognition authentication on ArchLinux and KDE Plasma using howdy

This is surprisingly easy...basically following Arch Wiki:

https://wiki.archlinux.org/index.php/Howdy

After some investigation, here is step by step and preferences

Install howdy

pablopunk

If you install nvidia driver in elementary os (go to AppCenter and it's under updates as a Free app) the 4k screen works perfectly. If you disable the laptop screen you might need to fix the scaling with the gsettings command (see commands below)

https://jakob.soy/blog/2016/scale-elementary-os-hdpi/

https://elementaryos.stackexchange.com/questions/15591/command-to-enable-60hz-on-4k-display

judepereira

-Xmx2048m
-Xss256k
-XX:+UseG1GC
-XX:InitiatingHeapOccupancyPercent=65
-XX:G1HeapRegionSize=16m
-XX:MaxGCPauseMillis=100

styblope

Enable TCP port 2375 for external connection to Docker

See this issue.
Docker best practise to Control and configure Docker with systemd.

1. Create daemon.json file in /etc/docker:

    {"hosts": ["tcp://0.0.0.0:2375", "unix:///var/run/docker.sock"]}
   

svanoort

# Base settings and GC logging
-server -XX:+AlwaysPreTouch  # First should be default, but we make it explicit, second pre-zeroes memory mapped pages on JVM startup -- improves runtime performance
# -Xloggc:gc-%t.log  # CUSTOMIZE LOCATION HERE - $path/gc-%t.log -- the %t in the gc log file path is so we get a new file with each JVM restart
-XX:NumberOfGCLogFiles=5 -XX:+UseGCLogFileRotation -XX:GCLogFileSize=20m # Limits the number of files, logs to folder 
-XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCDetails -XX:+PrintHeapAtGC -XX:+PrintGCCause
-XX:+PrintTenuringDistribution -XX:+PrintReferenceGC -XX:+PrintAdaptiveSizePolicy # gather info on object age & reference GC time for further tuning if needed.

# G1 specific settings -- probably should be default for multi-core systems with >2 GB of heap (below that, default is probably fine)
-XX:+UseG1GC
-XX:+UseStringDeduplication

edwardbeckett

-server
-Xms2g
-Xmx2g
-Xss16m
-XX:+UseConcMarkSweepGC
-XX:+CMSParallelRemarkEnabled
-XX:ConcGCThreads=4
-XX:ReservedCodeCacheSize=128m
-XX:+AlwaysPreTouch
-XX:+TieredCompilation