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streamer/sigverify: use bounded channels between streamers and sigver #9732

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Merged
KirillLykov merged 1 commit into from
Jan 15, 2026
Merged

streamer/sigverify: use bounded channels between streamers and sigver #9732

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6 changes: 5 additions & 1 deletion core/src/tpu.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,10 @@ impl SigVerifier {
// Conservatively allow 20 TPS per validator.
pub const MAX_VOTES_PER_SECOND: u64 = 20;

/// Size of the channel between streamer and TPU sigverify stage. The values have been selected to
/// be conservative max of obsersed on mnb during high-load events.
const TPU_CHANNEL_SIZE: usize = 50_000;

pub struct Tpu {
fetch_stage: FetchStage,
sig_verifier: SigVerifier,
Expand Down Expand Up @@ -180,7 +184,7 @@ impl Tpu {
vortexor_receivers,
} = sockets;

let (packet_sender, packet_receiver) = unbounded();
let (packet_sender, packet_receiver) = bounded(TPU_CHANNEL_SIZE);
let (vote_packet_sender, vote_packet_receiver) = unbounded();
let (forwarded_packet_sender, forwarded_packet_receiver) = unbounded();
let fetch_stage = FetchStage::new_with_sender(
Expand Down
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