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kernel: update headersync params

This commit is contained in:
fanquake 2025-09-01 11:57:42 +01:00
parent 66fb962426
commit 943de66b50
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2 changed files with 4 additions and 4 deletions
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4
contrib/devtools/headerssync-params.py
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@ -12,13 +12,13 @@ import random
# Parameters:
# Aim for still working fine at some point in the future. [datetime]
TIME = datetime(2027, 10, 6)
TIME = datetime(2028, 4, 2)
# Expected block interval. [timedelta]
BLOCK_INTERVAL = timedelta(seconds=600)
# The number of headers corresponding to the minchainwork parameter. [headers]
MINCHAINWORK_HEADERS = 886157
MINCHAINWORK_HEADERS = 912683
# Combined processing bandwidth from all attackers to one victim. [bit/s]
# 6 Gbit/s is approximately the speed at which a single thread of a Ryzen 5950X CPU thread can hash

4
src/headerssync.cpp
View File

@ -13,11 +13,11 @@
// contrib/devtools/headerssync-params.py.
//! Store one header commitment per HEADER_COMMITMENT_PERIOD blocks.
constexpr size_t HEADER_COMMITMENT_PERIOD{624};
constexpr size_t HEADER_COMMITMENT_PERIOD{632};
//! Only feed headers to validation once this many headers on top have been
//! received and validated against commitments.
constexpr size_t REDOWNLOAD_BUFFER_SIZE{14827}; // 14827/624 = ~23.8 commitments
constexpr size_t REDOWNLOAD_BUFFER_SIZE{15009}; // 15009/632 = ~23.7 commitments
// Our memory analysis assumes 48 bytes for a CompressedHeader (so we should
// re-calculate parameters if we compress further)