diff options
Diffstat (limited to 'src/cryptonote_basic/miner.cpp')
| -rw-r--r-- | src/cryptonote_basic/miner.cpp | 83 |
1 files changed, 79 insertions, 4 deletions
diff --git a/src/cryptonote_basic/miner.cpp b/src/cryptonote_basic/miner.cpp index f4de2ed7e..d29a3dcd6 100644 --- a/src/cryptonote_basic/miner.cpp +++ b/src/cryptonote_basic/miner.cpp @@ -73,6 +73,9 @@ #undef MONERO_DEFAULT_LOG_CATEGORY #define MONERO_DEFAULT_LOG_CATEGORY "miner" +#define AUTODETECT_WINDOW 10 // seconds +#define AUTODETECT_GAIN_THRESHOLD 1.02f // 2% + using namespace epee; #include "miner.h" @@ -108,6 +111,7 @@ namespace cryptonote m_starter_nonce(0), m_last_hr_merge_time(0), m_hashes(0), + m_total_hashes(0), m_do_print_hashrate(false), m_do_mining(false), m_current_hash_rate(0), @@ -178,7 +182,12 @@ namespace cryptonote merge_hr(); return true; }); - + + m_autodetect_interval.do_call([&](){ + update_autodetection(); + return true; + }); + return true; } //----------------------------------------------------------------------------------------------------- @@ -209,6 +218,60 @@ namespace cryptonote m_hashes = 0; } //----------------------------------------------------------------------------------------------------- + void miner::update_autodetection() + { + if (m_threads_autodetect.empty()) + return; + + uint64_t now = epee::misc_utils::get_ns_count(); + uint64_t dt = now - m_threads_autodetect.back().first; + if (dt < AUTODETECT_WINDOW * 1000000000ull) + return; + + // work out how many more hashes we got + m_threads_autodetect.back().first = dt; + uint64_t dh = m_total_hashes - m_threads_autodetect.back().second; + m_threads_autodetect.back().second = dh; + float hs = dh / (dt / (float)1000000000); + MGINFO("Mining autodetection: " << m_threads_autodetect.size() << " threads: " << hs << " H/s"); + + // when we don't increase by at least 2%, stop, otherwise check next + // if N and N+1 have mostly the same hash rate, we want to "lighter" one + bool found = false; + if (m_threads_autodetect.size() > 1) + { + int previdx = m_threads_autodetect.size() - 2; + float previous_hs = m_threads_autodetect[previdx].second / (m_threads_autodetect[previdx].first / (float)1000000000); + if (previous_hs > 0 && hs / previous_hs < AUTODETECT_GAIN_THRESHOLD) + { + m_threads_total = m_threads_autodetect.size() - 1; + m_threads_autodetect.clear(); + MGINFO("Optimal number of threads seems to be " << m_threads_total); + found = true; + } + } + + if (!found) + { + // setup one more thread + m_threads_autodetect.push_back({now, m_total_hashes}); + m_threads_total = m_threads_autodetect.size(); + } + + // restart all threads + { + CRITICAL_REGION_LOCAL(m_threads_lock); + boost::interprocess::ipcdetail::atomic_write32(&m_stop, 1); + for(boost::thread& th: m_threads) + th.join(); + m_threads.clear(); + } + boost::interprocess::ipcdetail::atomic_write32(&m_stop, 0); + boost::interprocess::ipcdetail::atomic_write32(&m_thread_index, 0); + for(size_t i = 0; i != m_threads_total; i++) + m_threads.push_back(boost::thread(m_attrs, boost::bind(&miner::worker_thread, this))); + } + //----------------------------------------------------------------------------------------------------- void miner::init_options(boost::program_options::options_description& desc) { command_line::add_arg(desc, arg_extra_messages); @@ -297,6 +360,13 @@ namespace cryptonote { m_mine_address = adr; m_threads_total = static_cast<uint32_t>(threads_count); + if (threads_count == 0) + { + m_threads_autodetect.clear(); + m_threads_autodetect.push_back({epee::misc_utils::get_ns_count(), m_total_hashes}); + m_threads_total = 1; + } + m_attrs = attrs; m_starter_nonce = crypto::rand<uint32_t>(); CRITICAL_REGION_LOCAL(m_threads_lock); if(is_mining()) @@ -318,12 +388,15 @@ namespace cryptonote set_is_background_mining_enabled(do_background); set_ignore_battery(ignore_battery); - for(size_t i = 0; i != threads_count; i++) + for(size_t i = 0; i != m_threads_total; i++) { m_threads.push_back(boost::thread(attrs, boost::bind(&miner::worker_thread, this))); } - LOG_PRINT_L0("Mining has started with " << threads_count << " threads, good luck!" ); + if (threads_count == 0) + MINFO("Mining has started, autodetecting optimal number of threads, good luck!" ); + else + MINFO("Mining has started with " << threads_count << " threads, good luck!" ); if( get_is_background_mining_enabled() ) { @@ -360,7 +433,7 @@ namespace cryptonote if (!is_mining()) { - MDEBUG("Not mining - nothing to stop" ); + MTRACE("Not mining - nothing to stop" ); return true; } @@ -381,6 +454,7 @@ namespace cryptonote MINFO("Mining has been stopped, " << m_threads.size() << " finished" ); m_threads.clear(); + m_threads_autodetect.clear(); return true; } //----------------------------------------------------------------------------------------------------- @@ -506,6 +580,7 @@ namespace cryptonote } nonce+=m_threads_total; ++m_hashes; + ++m_total_hashes; } slow_hash_free_state(); MGINFO("Miner thread stopped ["<< th_local_index << "]"); |