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Add histogram to poolstats

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This commit is contained in:
Howard Chu 2017-06-02 03:30:26 +01:00
parent d09620b0e2
commit 3fc22e7b78
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3 changed files with 105 additions and 3 deletions
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48
src/cryptonote_core/tx_pool.cpp
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@ -556,8 +556,9 @@ namespace cryptonote
CRITICAL_REGION_LOCAL(m_transactions_lock);
CRITICAL_REGION_LOCAL1(m_blockchain);
const uint64_t now = time(NULL);
std::map<uint64_t, txpool_histo> agebytes;
stats.txs_total = m_blockchain.get_txpool_tx_count();
m_blockchain.for_all_txpool_txes([&stats, now](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
m_blockchain.for_all_txpool_txes([&stats, now, &agebytes](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
stats.bytes_total += meta.blob_size;
if (!stats.bytes_min || meta.blob_size < stats.bytes_min)
stats.bytes_min = meta.blob_size;
@ -572,8 +573,53 @@ namespace cryptonote
stats.num_10m++;
if (meta.last_failed_height)
stats.num_failing++;
uint64_t age = now - meta.receive_time;
agebytes[age].txs++;
agebytes[age].bytes += meta.blob_size;
return true;
});
if (stats.txs_total > 1)
{
/* looking for 98th percentile */
size_t end = stats.txs_total * 0.02;
uint64_t delta, factor;
std::map<uint64_t, txpool_histo>::iterator it, i2;
if (end)
{
/* If enough txs, spread the first 98% of results across
* the first 9 bins, drop final 2% in last bin.
*/
it=agebytes.end();
for (size_t n=0; n <= end; n++, it--);
stats.histo_98pc = it->first;
factor = 9;
delta = it->first;
stats.histo.resize(10);
} else
{
/* If not enough txs, don't reserve the last slot;
* spread evenly across all 10 bins.
*/
stats.histo_98pc = 0;
it = agebytes.end();
factor = stats.txs_total > 9 ? 10 : stats.txs_total;
delta = now - stats.oldest;
stats.histo.resize(factor);
}
if (!delta)
delta = 1;
for (i2 = agebytes.begin(); i2 != it; i2++)
{
size_t i = (i2->first * factor - 1) / delta;
stats.histo[i].txs += i2->second.txs;
stats.histo[i].bytes += i2->second.bytes;
}
for (; i2 != agebytes.end(); i2++)
{
stats.histo[factor].txs += i2->second.txs;
stats.histo[factor].bytes += i2->second.bytes;
}
}
}
//------------------------------------------------------------------
//TODO: investigate whether boolean return is appropriate