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Comment on Performance, memory and CPU usage tests of Tailscale, Netbird, Zerotier

Tailscale is written in Go with lots of dependencies. It also has a lot more features, to the point some would call it bloated. That would explain those 55 MB idle memory usage difference. But those 245 MB after iperf3 test though… I can’t explain, but it’s consistent and repeatable.

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dan@upvote.au ⁨1⁩ ⁨year⁩ ago
Is it possible the others are using the Wireguard kernel module? In that case, a lot of the memory usage will be in kernel/system memory, and just looking at the app’s memory usage won’t be the full story.

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- shevchuk@lemm.ee ⁨1⁩ ⁨year⁩ ago
  Netbird uses kernel Wireguard module, right. Is there a way to measure kernel memory / CPU usage attributed to Wireguard? Zerotier, which has the lowest memory usage, does not use Wireguard at all, they have their own custom protocol and is userspace IIRC.
  
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  - dan@upvote.au ⁨1⁩ ⁨year⁩ ago
    
    Is there a way to measure kernel memory / CPU usage attributed to Wireguard?
    
    Not that I’m aware of, unfortunately.
    
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    shevchuk@lemm.ee ⁨1⁩ ⁨year⁩ ago
    I might just compare free output before / during / after iperf3 test. Will do that later today.
    
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