tSuggest disabling mempool feature if load too large - electrum-personal-server - Maximally lightweight electrum server for a single user
HTML git clone https://git.parazyd.org/electrum-personal-server
DIR Log
DIR Files
DIR Refs
DIR README
---
DIR commit f6613b86f0745a1f00047c971d5fdeb6c54ef351
DIR parent 4a9f39dd8f28c7928f82d92d82b5694038b172d8
HTML Author: chris-belcher <chris-belcher@users.noreply.github.com>
Date: Wed, 10 Apr 2019 19:46:45 +0100
Suggest disabling mempool feature if load too large
Diffstat:
M config.cfg_sample | 8 +++++---
M electrumpersonalserver/server/comm… | 22 +++++++++++++++-------
2 files changed, 20 insertions(+), 10 deletions(-)
---
DIR diff --git a/config.cfg_sample b/config.cfg_sample
t@@ -12,6 +12,7 @@
#my_second_wallet = xpubanotherkey
# Multisig wallets use format `required-signatures [list of master pub keys]`
+# this example is a 2-of-3 multisig wallet
#multisig_wallet = 2 xpub661MyMwAqRbcFseXCwRdRVkhVuzEiskg4QUp5XpUdNf2uGXvQmnD4zcofZ1MN6Fo8PjqQ5cemJQ39f7RTwDVVputHMFjPUn8VRp2pJQMgEF xpub661MyMwAqRbcFseXCwRdRVkhVuzEiskg4QUp5XpUdNf2uGXvQmnD4zcofZ1MN6Fo8PjqQ5cemJQ39f7RTwDVVputHMFjPUn8VRp2pJQMgEF xpub661MyMwAqRbcFseXCwRdRVkhVuzEiskg4QUp5XpUdNf2uGXvQmnD4zcofZ1MN6Fo8PjqQ5cemJQ39f7RTwDVVputHMFjPUn8VRp2pJQMgEF
[watch-only-addresses]
t@@ -71,6 +72,7 @@ ip_whitelist = *
certfile = certs/cert.crt
keyfile = certs/cert.key
-# Option for disabling the fee histogram
-# This is useful on low powered devices at times when the mempool is large
-disable_fee_histogram = false
+# Option for disabling the fee histogram calculation
+# It improves server responsiveness but stops mempool-based Electrum features
+# This is useful on low powered devices at times when the node mempool is large
+disable_mempool_fee_histogram = false
DIR diff --git a/electrumpersonalserver/server/common.py b/electrumpersonalserver/server/common.py
t@@ -105,7 +105,7 @@ def on_disconnect(txmonitor):
subscribed_to_headers[0] = False
txmonitor.unsubscribe_all_addresses()
-def handle_query(sock, line, rpc, txmonitor, disable_fee_histogram):
+def handle_query(sock, line, rpc, txmonitor, disable_mempool_fee_histogram):
logger = logging.getLogger('ELECTRUMPERSONALSERVER')
logger.debug("=> " + line)
try:
t@@ -241,6 +241,7 @@ def handle_query(sock, line, rpc, txmonitor, disable_fee_histogram):
elif method == "blockchain.transaction.broadcast":
if not rpc.call("getnetworkinfo", [])["localrelay"]:
result = "Broadcast disabled when using blocksonly"
+ logger.info("Transaction broadcasting disabled when blocksonly")
else:
try:
result = rpc.call("sendrawtransaction", [query["params"][0]])
t@@ -248,11 +249,18 @@ def handle_query(sock, line, rpc, txmonitor, disable_fee_histogram):
result = str(e)
send_response(sock, query, result)
elif method == "mempool.get_fee_histogram":
- if disable_fee_histogram:
+ if disable_mempool_fee_histogram:
result = [[0, 0]]
logger.debug("fee histogram disabled, sending back empty mempool")
else:
+ st = time.time()
mempool = rpc.call("getrawmempool", [True])
+ et = time.time()
+ MEMPOOL_WARNING_DURATION = 10 #seconds
+ if et - st > MEMPOOL_WARNING_DURATION:
+ logger.warning("Mempool very large resulting in slow response" +
+ " by server. Consider setting " +
+ "`disable_mempool_fee_histogram = true`")
#algorithm copied from the relevant place in ElectrumX
#https://github.com/kyuupichan/electrumx/blob/e92c9bd4861c1e35989ad2773d33e01219d33280/server/mempool.py
fee_hist = defaultdict(int)
t@@ -414,7 +422,7 @@ def create_server_socket(hostport):
def run_electrum_server(rpc, txmonitor, hostport, ip_whitelist,
poll_interval_listening, poll_interval_connected, certfile, keyfile,
- disable_fee_histogram):
+ disable_mempool_fee_histogram):
logger = logging.getLogger('ELECTRUMPERSONALSERVER')
logger.info("Starting electrum server")
server_sock = create_server_socket(hostport)
t@@ -455,7 +463,7 @@ def run_electrum_server(rpc, txmonitor, hostport, ip_whitelist,
recv_buffer = recv_buffer[lb + 1:]
lb = recv_buffer.find(b'\n')
handle_query(sock, line.decode("utf-8"), rpc,
- txmonitor, disable_fee_histogram)
+ txmonitor, disable_mempool_fee_histogram)
except socket.timeout:
on_heartbeat_connected(sock, rpc, txmonitor)
except (IOError, EOFError) as e:
t@@ -709,13 +717,13 @@ def main():
poll_interval_connected = int(config.get("bitcoin-rpc",
"poll_interval_connected"))
certfile, keyfile = get_certs(config)
- disable_fee_histogram = config.getboolean("electrum-server",
- "disable_fee_histogram", fallback=False)
+ disable_mempool_fee_histogram = config.getboolean("electrum-server",
+ "disable_mempool_fee_histogram", fallback=False)
try:
run_electrum_server(rpc, txmonitor, hostport, ip_whitelist,
poll_interval_listening,
poll_interval_connected, certfile, keyfile,
- disable_fee_histogram)
+ disable_mempool_fee_histogram)
except KeyboardInterrupt:
logger.info('Received KeyboardInterrupt, quitting')