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sync: bump HEADER_DOWNLOAD_WINDOW 1024->4096 for 4x faster P2P IBD

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Krystie
2026-07-01 12:21:25 -07:00
parent 5c312bb7da
commit d2389b4d39
1 changed files with 7 additions and 1 deletions
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src/syncmanager.h
+7 -1
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@@ -19,7 +19,13 @@ class CSyncManager
public:
struct HeaderNode;
static constexpr unsigned int HEADER_DOWNLOAD_WINDOW = 1024;
// HEADER_DOWNLOAD_WINDOW: max concurrent block requests in flight per sync
// tick. Bumped from 1024 → 4096 in v6.1.2 because 4+ peers are now reliably
// available and Tor's 1KB/s RTT × 4096 blocks = manageable inflight without
// stalling the orphan pool. With 1 reliable peer, drops back to ~1024 effective
// due to nPerPeerCap. The factor-4 jump is safe because orphan pool handles
// out-of-order delivery and CSyncManager's Tick() drains in 5s intervals.
static constexpr unsigned int HEADER_DOWNLOAD_WINDOW = 4096;
static constexpr unsigned int HEADER_SYNC_LOW_WATER = HEADER_DOWNLOAD_WINDOW / 4;
static constexpr unsigned int HEADER_SYNC_TARGET_INFLIGHT = HEADER_DOWNLOAD_WINDOW / 2;
static constexpr int64_t HEADER_SYNC_REFILL_MIN_INTERVAL_SECONDS = 5;