--- Log opened Sat May 31 00:00:58 2025
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00:16 < dviola> Earnestly: yeah it has grown quite a bit, I still remember when my 256GB SSD was good enough...
00:31 < dviola> Earnestly: just curious but which hardware are you considering for your upgrade? I've been thinking about moving back to hdds for block storage, price per GB may be cheaper
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03:19 < Earnestly> dviola: I would likely select something boring like a crucial p3 or kioxia (toshiba) 2tb nvme, or even just dedicate a 1tb drive to the blocks
03:21 < dviola> Earnestly: I see
03:25 < Earnestly> dviola: Fwiw, it'd all just live in a micro form factor pc of some description. bitcoin core doesn't really need much in the ways of specs. I have even sync'd the block chain on an rpi 2b not so long ago, it just takes awhile. (My internet isn't that fast anyway)
03:27 < dviola> yeah, indeed
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03:33 < dviola> I was pretty impressed when I synced bitcoin core for the first time on a dual core PC (E5500 CPU + 2GB RAM)... I'm still not sure whether the slowdown I experienced was disk related or filesystem related but I did notice some slowdown when having the chainstate on SATA SSD
03:33 < dviola> when I have it on nvme it's pretty fast
03:36 < dviola> I did some tests with `dd` and writing zeros to the nvme gives me like 1.5 GB/s, the SATA SSD is a lot slower... so maybe that's just how it is
03:43 < dviola> yeah there are comments all over the internet that this SSD (WD green) is pretty slow and crappy, so that might be it
03:52 < dviola> just got curious about how much data the chainstate writes to disk...
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04:02 < dviola> 11GB, that's not a lot, I guess the chainstate gets rebuilt every time bitcoin core finishes syncing?
04:13 < dviola> oh, it's bdb...
04:19 < dviola> anyway, not that this is a problem, it isn't, I fully expect the SATA SSD to be slower
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05:13 < sipa> the chainstate is leveldb
05:13 < sipa> but depending on how high you set the dbcache, it may effectively mean rewriting the whole thing to disk on every flush
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05:55 < dviola> I see, thanks y'all!
05:58 < dviola> oh, got confused with bdb...
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06:07 < dviola> it'd be nice to know how much this kind of filesystem improvements end up helping bitcoin core: https://www.phoronix.com/news/Linux-6.16-EXT4-Performance
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07:48 < dviola> speaking of bdb, nice work on the descriptor/sqlite wallet, not having to bother with bdb when compiling bitcoin core is such a relief!
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08:19 < l0rinc> sipa: after #30611 (not yet in v29) we won't likely write the whole chainstate in a single sitting anymore
08:19 < corebot> https://github.com/bitcoin/bitcoin/issues/30611 | validation: write chainstate to disk every hour by andrewtoth · Pull Request #30611 · bitcoin/bitcoin · GitHub
08:23 < l0rinc> dviola: we could benchmark it, but disk speed is a bottleneck mostly during IBD when dbcache is very low - or when we need to iterate the utxo set for RPCs. I wouldn't expect huge differences otherwise - even SSD vs HDD measurements aren't always visible from just the results of my IBD benchmarks.
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08:38 < dviola> makes sense
08:40 < dviola> yeah, I don't expect to see huge differences either
08:47 < bitcoin-git> [bitcoin] ismaelsadeeq opened pull request #32654: init: deprecate `-blockmaxweight` startup option (master...05-2025-deprecate-block-max-weight) https://github.com/bitcoin/bitcoin/pull/32654
08:48 < l0rinc> correction to my previous claim to sipa: this applies to IBD or reindexes, with e.g. assumeutxo we still write the whole chainstate in one go for big enough dbcache
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12:16 < bitcoin-git> [gui-qml] johnny9 opened pull request #461: Introduce standard fee selection to Send (main...standard-fee) https://github.com/bitcoin-core/gui-qml/pull/461
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--- Log closed Sun Jun 01 00:00:59 2025