This repo tries to give an overview over the landscape of the the different dbus implementations that exists in the rust ecosystem.
- https://github.com/KillingSpark/rustbus
- https://github.com/diwic/dbus-rs/ (bindings to C library)
- https://github.com/diwic/dbus-rs/tree/master/dbus-native
- https://gitlab.freedesktop.org/zeenix/zbus/
- https://github.com/Arnavion/dbus-pure
- https://github.com/srwalter/dbus-bytestream
- https://github.com/LinkTed/dbus-message-parser
Note that I am the author of rustbus, but of course I am trying to be as objective as possible here.
Some benchmarks exist. I plan to add equivalent ones for the missing libs, and more kinds of benchmarks.
- MarshalMix: Build a signal message with mixed params and marshal it
- MarshalBigArray: Build a signal message with a big u64 array and marshal it
- MarshalStrArray: Build a signal message with a big String array and marshal it
- Marshal + Send: Connect to the sessionbus, build a signal and send it to the bus
The dbus-message-parser does not provide any means of sending messages, so this benchmark is omitted.
I am running this on a Ryzen 3800X (/proc/cpuinfo says: AMD Ryzen 7 3800X). Your values might vary a bit.
I used rust 1.53.0 to run these benchmarks.
To replicate these results just run: cargo bench. That will run all benchmarks.
| Library | MarshalMixed | MarshalStrArray | MarshalBigArray | Marshal + Send |
|---|---|---|---|---|
| rustbus | 7.074 us | 125.65 us | 2.8302 us | 76.774 us |
| dbus-rs | 177.08 us | 1475.6 us | 367.50 us | 268.00 us |
| dbus-native | 5.2846 us | 335.77 us | 135.75 us | 47.112 us |
| dbus-bytestream | 14.387 us | 1213.3 us | 166.77 us | 62.467 us |
| dbus-message-parser | 39.111 us | 4491.1 us | 784.56 us | NaN |
| dbus-pure | 16.411 us | 294.34 us | 66.035 us | 58.328 us |
| zvariant | 41.591 us | 1493.6 us | 567.61 us | 117.78 us |
| zvariant-derive | 41.029 us | 1504.5 us | 567.79 us | 119.50 us |