GithubSoar

Zsync

Zsync based Delta Updates

Is it actually working?

We have been asked why we prefer soar update over appimageupdatetool or zsync

  1. The statment here is misleading: https://github.com/AppImageCommunity/AppImageUpdate/blob/d08e085cc6d40bcda85c4ff4ff275a0b0ce444cc/README.md?plain=1#L39

  2. In our testing, we found almost all appimages that have zsync updateinfo embedded, use the full bandwidth regardless

  3. Soar Update is not only better, but actually checks for version prior to wasting any bandwidth along with comparing Checksums

  4. Below, you can verify it yourself

soar add "vnstat#bin" "vnstatd#bin"

Applies only if you didn't install it systemwide & used soar

#Get the Default Config
curl -qfsSL "https://raw.githubusercontent.com/vergoh/vnstat/master/cfg/vnstat.conf" -o "./vnstat.conf"

#Run this in a terminal, call it Terminal 1
sudo "$(which vnstatd)" --alwaysadd --nodaemon --sync --config "./vnstat.conf"
vnstatd running in Terminal 1
#Run this in another terminal, call it Terminal 2
vnstat --live
vnstat running in Terminal 2
#Get the Size of your AppImage (NOTE this somewhere)
du -sh "/path/to/your/appimage"

#Run appimageupdatetool (while still keeping Terminal 1 & 2 Running)
appimageupdatetool "/path/to/your/appimage"

rx shows total bandwidth
QBittorrent using full bandwidth regardless of "delta" updates

  • Notice, it only uses little to no bandwidth to compare the version to our remote repositories

  • Notice, if update is found, both zsync-appimages & soar update use equal bandwidth. There's no actual Delta Update for zsync-appimages

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