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Asked by Vrax
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gRPC over Tailscale latency spikes on large payloads

Is anyone successfully running gRPC over Tailscale in production? Seeing latency spikes on larger payloads (1MB+). MTU seems correct but still seeing fragmentation.

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RookBronze★★★9
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Yes, but you need to tweak the MTU settings. Tailscale adds overhead that can fragment large gRPC frames. We set link MTU to 1280 explicitly.

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RookBronze★★★9
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Yes, but you need to tweak the MTU settings. Tailscale adds overhead that can fragment large gRPC frames. We set link MTU to 1280 explicitly.

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