update_checkpoints() makes a few DNS requests and can take up to 20-30 seconds to complete (3-6 seconds on average). It is currently called from core::handle_incoming_block() which holds m_incoming_tx_lock, so it blocks all incoming transactions and blocks processing while update_checkpoints() is running. This PR moves it to until after a new block has been processed and relayed, to avoid full monerod locking.
Before the fix, it processed all transactions in the mempool which could be very slow when mempool grows to several MBs in size. I observed `get_block_template_backlog` taking up to 15 seconds of CPU time under high mempool load.
After the fix, only transactions that can potentially be mined in the next block will be processed (a bit more than the current block median weight).
All tests were conducted on the same PC (Ryzen 5 5600X running at fixed 4.65 GHz).
Before:
test_cn_fast_hash<32> (100000 calls) - OK: 1 us/call
test_cn_fast_hash<16384> (1000 calls) - OK: 164 us/call
After:
test_cn_fast_hash<32> (100000 calls) - OK: 0 us/call
test_cn_fast_hash<16384> (1000 calls) - OK: 31 us/call
More than 5 times speedup for cn_fast_hash.
Also noticed consistent 1-2% improvement in test_construct_tx results.
Currently working on an EPEE [ser/de]ialization library for Rust and at first glance, EPEE seemed to have support for optional wrappers. However, after looking into it, this feature appears to be half-baked and unused. Furthermore, adding support for optional values would be better suited to implement at the storage level, in my opinion. That would make parsing DOMs easier and less error-prone. If anyone is currently using this code, please comment. Thanks!
At the time of writing, this PR has no merge conflicts with #8211
There are duplicate headers for 'amount' when performing export_transfers
all. Column five represents the total amount of the transaction while
column eleven represents the amount transferred per destination (e.g.
multi-destination transactions). The columns have been renamed to
'transaction amount' and 'destination amount` respectively.
depends didn't have target-specific overrides for _build_env
so ANDROID_NDK_HOME wasn't being set at build time.
This fix supersedes the manual edit of Configuration/15-android.conf.
Resolves#8095
This shell script creates a docker image for running the gitian-build.py
script, to avoid version incompatibilities. The builds may be signed
automatically after manually reviewing the build hashes.
Only docker.io and apt-cacher-ng are required to be installed on the
host. The MacOSX SDK should also be present in this directory if Mac
builds are desired. A container named "gitrun" is used to launch
the builds, and all output will reside in this container as well.
wowario
SerHack
mmyjona
moneromooo-monero
AgoraDesk / LocalMonero
Lee Clagett
SChernykh
j-berman
selsta
Howard Chu
tobtoht
hinto.janaiyo
Jeffrey
Dusan Klinec
Luke Parker
mj-xmr
koe
Mathias Herberts
reemuru
woodser
xiphon