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30 sats \ 2 replies \ @optimism 22 Oct \ parent \ on: Stacker Saloon
Feel free to share it with anyone, though note that it's right now only a confirmation that it can be reproduced. Next steps for me:
  1. Let it finish so that I can graph and analyze the full IBD end-to-end for patterns.
  2. Start comparing BenchConnectBlock across different ARM hardware. 1
  3. If there are visible differences in bench, profile it. Otherwise make a new bench until it shows the differences, and profile that.
  4. Attempt to optimize the code
  5. Do a PR if 4 has outcome
I aim to do 2 and 3 in parallel to the IBD whenever I find time.
Is CPU the bottleneck, not hard disk speed or bandwidth?
It is for my test, so I'd say "yes". It's also what I expected.
Would connecting from an ethernet cable have helped?
I don't expect that, because txin verification doesn't depend on network - it's all done between disk, cache and cpu.
And lastly, is it due to UTXO set bloat, or simply due to larger blocks?
The block I gave as an example above contains mostly consolidation of p2sh utxo. So in this case, we're actually seeing bad performance on utxoset unbloat.

Footnotes

  1. because for example the IBD I did on an RK3588 earlier this year went much faster. There are some cpu feature differences between that and a Pi4. This would also suggest that a Pi5 would perform much better because it has some more CPU features built in. ↩
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100 sats \ 1 reply \ @SimpleStacker 22 Oct
Ok, I'll wait for more concrete results before sharing anything. That Github issue is closed anyway so unlikely to get any real attention.
The block I gave as an example above contains mostly consolidation of p2sh utxo. So in this case, we're actually seeing bad performance on utxoset unbloat.
Interesting. But we wouldn't need to do this much validation if the UTXO set wasn't so bloated to begin with, right? So I think it's fair to chalk it up to the sphere of problems caused by UTXO bloat?
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30 sats \ 0 replies \ @optimism 22h
I'd argue that bearer instruments (metals, coin/cash, bitcoin) have consolidation as a part of the natural cycle, especially for businesses. So I'd argue that it's fair to chalk it up to having a utxo system, but not to bloat.
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