Bitcoin full node and query server
Oct 15, 2024
View in context in the libbitcoin Slack #general mirror.
evoskuil12:37
It is likely that the default settings will be suboptimal for your machine, even resulting in thrashing. If you post your basic specs I can make suggestions. One of the aspects we are working on is automatically tuning what is presently manual configuration for given platform.
Also note that if your CPU supports sha native (shani), which is about 5x faster individual hashing, it will distort realistic benchmarking, since shani is not yet integrated into the hashing library.
evoskuil18:42
[log] path = X:/ application = true news = true session = true protocol = false quitting = false proxy = false remote = true fault = true verbose = false #objects = false # debug builds only [database] path = X:/bitcoin/ minimize = false [bitcoin] # defaults to all checkpoints. #checkpoint = 000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f:0 minimum_work = 000000000000000000000000000000000000000052b2559353df4117b7348b64 milestone = 0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5:840000 [forks] [node] headers_first = true allowed_deviation = 1.5 sample_period_seconds = 10 currency_window_minutes = 60 maximum_concurrency = 50,000 maximum_height = 840,000 # stops block sync (not header sync) snapshot_bytes = 0 snapshot_valid = 0 allocation_multiple = 20 [network] threads = 16 outbound_connections = 200 connect_batch_size = 5 host_pool_capacity = 10,000 enable_loopback = false self = xxx.xxx.xxx.xxx:8333 # advertised addresses inbound_connections = 0 # Use 1 for loopback user_agent = "/libbitcoin /" enable_ipv6 = false enable_alert = false # log alert messages enable_reject = false # send reject messages enable_address = true # in/out address messages enable_transaction = false # peer should not relay txs validate_checksum = false # validate inbound message checksum invalid_services = 176 # shitcoins services_minimum = 9 # witness node services_maximum = 9 # witness node protocol_maximum = 70012 # current default (send_headers). protocol_minimum = 31800 # Satoshi:22.0.0 minimum (headers). minimum_buffer = 1,000,000 # network payload buffer (per channel) retry_timeout_seconds = 5 # 1s, 2s, 7s f/m/s loopback, 5s for large connect_timeout_seconds = 5 # 1s, 3s, 5s f/m/s loopback, 10s for large handshake_timeout_seconds = 5 # time to complete handshake. channel_heartbeat_minutes = 5 # ping channel_inactivity_minutes = 10 # receive channel_expiration_minutes = 60 # unconditional [database] # TODO: These require tuning for low RAM machines. header_buckets = 565,129 header_size = 21,000,000 header_rate = 5 txs_buckets = 565,129 txs_size = 1,000,000,000 txs_rate = 5 tx_buckets = 681,968,291 tx_size = 16,000,000,000 tx_rate = 5 # compressed size point_buckets = 638,910,752 point_size = 9,000,000,000 point_rate = 5 spend_buckets = 1,739,749,749 spend_size = 16,000,000,000 spend_rate = 5 puts_size = 7,000,000,000 puts_rate = 5 input_size = 92,000,000,000 input_rate = 5 output_size = 25,000,000,000 output_rate = 5 candidate_size = 2,568,513 candidate_rate = 5 confirmed_size = 2,568,513 confirmed_rate = 5 strong_tx_buckets = 681,968,291 strong_tx_size = 3,000,000,000 strong_tx_rate = 5 validated_tx_buckets = 681,968,291 validated_tx_size = 1 validated_tx_rate = 5 validated_bk_buckets = 565,129 validated_bk_size = 2,000,000 validated_bk_rate = 5 address_buckets = 0 address_size = 1 address_rate = 0 neutrino_buckets = 0 neutrino_size = 1 neutrino_rate = 0
This is similar to what I run. The initial [database] table sizes definitely need to be reduced for low RAM. I would cut these
_size values down to 1/4 to 1/10 of above for lower RAM. This is required to prevent mmap thrashing. Also the growth _rate values must be small. I run at 15, but these are probably okay for low RAM at 5.