Yes, we can verify that the tracepoints are indeed nop assembly operations in a Bitcoin Core binary with tracepoints.
The Bitcoin Core doc/tracing.md contains a section on listing avaliabe tracepoints.
For example, readelf -n src/bitcoind can be used to list ELF notes in the binary. There is an ELF note in the stapsdt section for each tracepoint. This note contains the location of the tracepoint in the binary.
| #!/usr/bin/env bpftrace | |
| /* | |
| USAGE: | |
| bpftrace perf-block-connect.bt <end-height> | |
| This script requires a 'bitcoind' binary compiled with eBPF support and the | |
| 'validation:block_connected' tracepoint. By default, it's assumed that 'bitcoind' is |
| 1MB limit (no bip): | |
| commited: 2010-09-07 | |
| flag-day: 79400 2010-09-12 | |
| burial: 2010-09-20 | |
| dup-tx (bip 30): | |
| bip: 2012-02-22 | |
| flag-day: 2012-03-15 | |
| p2sh (bip 16): |
| # MOVED: | |
| # To enable better collboration, I've moved the shell.nix to https://github.com/0xB10C/nix-bitcoin-core. | |
| # Older revisions remain avaiable here. | |
| # https://gist.github.com/0xB10C/1fd0d4a68bf96914775b1515340926f8/revisions | |
| # | |
| # | |
| # | |
| # | |
| # | |
| # |
| from __future__ import print_function | |
| from bcc import BPF, USDT | |
| import sys | |
| from datetime import datetime | |
| if len(sys.argv) < 2: | |
| print("USAGE:", sys.argv[0], "path/to/bitcoind") | |
| exit() | |
| path = sys.argv[1] | |
| debug = False |
| Date.prototype.toYYYYMMDDString = function () { | |
| return this.getFullYear() + "-" + ("0" + (this.getMonth()+1)).slice(-2) + "-" + ("0" + this.getDate()).slice(-2); | |
| }; |
| #!/usr/bin/env python | |
| # requires https://github.com/petertodd/python-bitcoinlib | |
| # just retry if a TypeError occurs on nodes without tx indexing (e.g. pruned nodes) | |
| import bitcoin | |
| import bitcoin.rpc | |
| rpc = bitcoin.rpc.RawProxy() | |
| rawmempool = rpc.getrawmempool(False); |
| command | function | usage | notes |
|---|---|---|---|
| scp | remote -> local | scp uname@remotehost:filename /local/dir | |
| scp | local -> remote | scp filename uname@remotehost:/remote/dir | |
| tar | untar to dir | tar -xfv archive.tar -C /target/directory | (create dir first) |
| #!/usr/bin/python | |
| # last bucket with more than 2^14 sat/byte | |
| BUCKETCOUNT = 200 | |
| # defines a 5% increase per bucket | |
| # https://github.com/bitcoin/bitcoin/commit/e5007bae35ce22036a816505038277d99c84e3f7#diff-8c0941572d1cdf184d1751f7b7f1db4eR109 | |
| FEE_SPACING = 1.05 | |
| # list of fee buckets |
