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introduce two commandline options for assumeutxo, specifically for
benchmarking. these commands are:
- pausebackgroundsync - an option lets the user pause the verification
of historical blocks in the background
-loadutxosnapshot=<path> - load an assumeutxo snapshot on startup,
instead of needing to go through the rpc
command. the node will shutdown immediately
after the snapshot has been loaded
this path is not meant for general use and is instead just for making it
more ergonomic to use assumeutxo for benchmarking IBD changes. the
benefits of using assumeutxo here are we can start from an arbitrary
height and sync to chaintip to collect relevant data quickly. using
assumeutxo means we can make whatever changes we need to the
chainstatedb, since it will be created fresh from the snapshot.
note, to use the loadutxosnapshot option, you must first run:
./build/src/bitcoind -stopatheight=1
this makes the node do a header sync and then shut down. this is because
assumeutxo will not load a snapshot unless the base block is in the
header chain. we could remove this requirement, but this patch is meant
to be as minimal as possible, and this also allows us to perform heaeder
sync as a preparation commit for a benchmark, which helps keep IBD
benchmarks more focused on strictly measuring IBD.
next, run:
./build/src/bitcoind -loadutxosnapshot=<path>
the node will shutdown after the snapshot is loaded. finally, run:
./build/src/bitcoind -pausebackgroundsync=1
for the actual benchmarking step. this ensures only the sync to chaintip
is benchmarked and the load snapshot step is not included in the
measurement.
Co-authored-by: Sjors Provoost <10217+sjors@users.noreply.github.com>
Co-authored-by: David Gumberg <davidzgumberg@gmail.com>
# Conflicts: # .github/workflows/ci.yml # bench-ci/run-assumeutxo-bench.sh # justfile
# Conflicts: # bench-ci/run-assumeutxo-bench.sh
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