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Merge pull request #5414

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e9fac29a unit_tests/long_term_block_weight: some tweaks that seem to make more sense (stoffu)
467f4c7e tests/block_weight: use integer division when computing median (stoffu)
815d08dc tests/block_weight: remove unused MULTIPLIER_SMALL (stoffu)
661f1fb8 blockchain: remove unused calc of short_term_constraint (stoffu)
This commit is contained in:
Riccardo Spagni 2019-04-16 22:37:02 +02:00
commit 0d2aaac15b
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3 changed files with 11 additions and 12 deletions
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1
src/cryptonote_core/blockchain.cpp
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@ -3986,7 +3986,6 @@ bool Blockchain::update_next_cumulative_weight_limit(uint64_t *long_term_effecti
new_weights[0] = long_term_block_weight; new_weights[0] = long_term_block_weight;
long_term_median = epee::misc_utils::median(new_weights); long_term_median = epee::misc_utils::median(new_weights);
m_long_term_effective_median_block_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, long_term_median); m_long_term_effective_median_block_weight = std::max<uint64_t>(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5, long_term_median);
short_term_constraint = m_long_term_effective_median_block_weight + m_long_term_effective_median_block_weight * 2 / 5;
weights.clear(); weights.clear();
get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW); get_last_n_blocks_weights(weights, CRYPTONOTE_REWARD_BLOCKS_WINDOW);

5
tests/block_weight/block_weight.py
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@ -9,7 +9,6 @@ import math
MEDIAN_WINDOW_SMALL = 100 # number of recent blocks for median computation MEDIAN_WINDOW_SMALL = 100 # number of recent blocks for median computation
MEDIAN_WINDOW_BIG = 5000 MEDIAN_WINDOW_BIG = 5000
MULTIPLIER_SMALL = 1.4 # multipliers for determining weights
MULTIPLIER_BIG = 50.0 MULTIPLIER_BIG = 50.0
MEDIAN_THRESHOLD = 300*1000 # initial value for median (scaled kB -> B) MEDIAN_THRESHOLD = 300*1000 # initial value for median (scaled kB -> B)
lcg_seed = 0 lcg_seed = 0
@ -24,9 +23,9 @@ def get_median(vec):
#temp = vec #temp = vec
temp = sorted(vec) temp = sorted(vec)
if len(temp) % 2 == 1: if len(temp) % 2 == 1:
return temp[len(temp)/2] return temp[len(temp)//2]
else: else:
return int((temp[len(temp)/2]+temp[len(temp)/2-1])/2) return int((temp[len(temp)//2]+temp[len(temp)//2-1])//2)
def LCG(): def LCG():
global lcg_seed global lcg_seed

17
tests/unit_tests/long_term_block_weight.cpp
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@ -198,9 +198,10 @@ TEST(long_term_block_weight, multi_pop)
const uint64_t effective_median = bc->get_current_cumulative_block_weight_median(); const uint64_t effective_median = bc->get_current_cumulative_block_weight_median();
const uint64_t effective_limit = bc->get_current_cumulative_block_weight_limit(); const uint64_t effective_limit = bc->get_current_cumulative_block_weight_limit();
for (uint64_t h = 0; h < 4; ++h) const uint64_t num_pop = 4;
for (uint64_t h = 0; h < num_pop; ++h)
{ {
size_t w = h < TEST_LONG_TERM_BLOCK_WEIGHT_WINDOW ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5 : bc->get_current_cumulative_block_weight_limit(); size_t w = bc->get_current_cumulative_block_weight_limit();
uint64_t ltw = bc->get_next_long_term_block_weight(w); uint64_t ltw = bc->get_next_long_term_block_weight(w);
bc->get_db().add_block(std::make_pair(cryptonote::block(), ""), w, ltw, h, h, {}); bc->get_db().add_block(std::make_pair(cryptonote::block(), ""), w, ltw, h, h, {});
ASSERT_TRUE(bc->update_next_cumulative_weight_limit()); ASSERT_TRUE(bc->update_next_cumulative_weight_limit());
@ -208,10 +209,8 @@ TEST(long_term_block_weight, multi_pop)
cryptonote::block b; cryptonote::block b;
std::vector<cryptonote::transaction> txs; std::vector<cryptonote::transaction> txs;
bc->get_db().pop_block(b, txs); for (uint64_t h = 0; h < num_pop; ++h)
bc->get_db().pop_block(b, txs); bc->get_db().pop_block(b, txs);
bc->get_db().pop_block(b, txs);
bc->get_db().pop_block(b, txs);
ASSERT_TRUE(bc->update_next_cumulative_weight_limit()); ASSERT_TRUE(bc->update_next_cumulative_weight_limit());
ASSERT_EQ(effective_median, bc->get_current_cumulative_block_weight_median()); ASSERT_EQ(effective_median, bc->get_current_cumulative_block_weight_median());
@ -294,9 +293,11 @@ TEST(long_term_block_weight, pop_invariant_random)
{ {
PREFIX(10); PREFIX(10);
for (uint64_t h = 1; h < TEST_LONG_TERM_BLOCK_WEIGHT_WINDOW - 10; ++h) for (uint64_t h = 1; h < 2 * TEST_LONG_TERM_BLOCK_WEIGHT_WINDOW - 10; ++h)
{ {
size_t w = bc->get_db().height() < TEST_LONG_TERM_BLOCK_WEIGHT_WINDOW ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5 : bc->get_current_cumulative_block_weight_limit(); lcg_seed = bc->get_db().height();
uint32_t r = lcg();
size_t w = bc->get_db().height() < TEST_LONG_TERM_BLOCK_WEIGHT_WINDOW ? CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V5 : (r % bc->get_current_cumulative_block_weight_limit());
uint64_t ltw = bc->get_next_long_term_block_weight(w); uint64_t ltw = bc->get_next_long_term_block_weight(w);
bc->get_db().add_block(std::make_pair(cryptonote::block(), ""), w, ltw, h, h, {}); bc->get_db().add_block(std::make_pair(cryptonote::block(), ""), w, ltw, h, h, {});
ASSERT_TRUE(bc->update_next_cumulative_weight_limit()); ASSERT_TRUE(bc->update_next_cumulative_weight_limit());