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<bitcoin-git>
[bitcoin] fanquake closed pull request #33337: chore: compare against keys.size() in writeObject comma check (master...fix/univalue-writeobject-size-consistency) https://github.com/bitcoin/bitcoin/pull/33337
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<hebasto>
#proposedmeetingtopic Drop support for Ubuntu 22.04 LTS as a build platform
<fanquake>
Why?
<darosior>
So sipa and i had a look into the high memory usage of v29 vs v28 reported in the SE post i linked yesterday. Our best guess (well really sipa's and it makes sense to me too) is that this is due to #30039. With this change the bitcoind process will mmap larger LevelDB files, causing a higher reported memory usage. In case of memory pressure the
<darosior>
kernel will just drop those so it won't lead to an OOM.
<corebot>
https://github.com/bitcoin/bitcoin/issues/30039 | dbwrapper: Bump LevelDB max file size to 32 MiB to avoid system slowdown from high disk cache flush rate by maciejsszmigiero · Pull Request #30039 · bitcoin/bitcoin · GitHub
<instagibbs>
darosior please put n issue if you haven't (goes without saying)
<darosior>
But it's still mildly annoying that common utilities like `top` will report it as memory actively used by bitcoind, which may confuse (more) users.
<darosior>
instagibbs: wouldn't have gone without you asking
<hebasto>
fanquake: mostly due to outdated and problematic to maintain packages in default repositories: cmake, qt, capnp
<fanquake>
qt & capnp from depends should be fine?
<hebasto>
sure
<fanquake>
if there's something that's broken with cmake, worth knowing
<hebasto>
in April 2026, when Core v31 will be released, another LTS will be available
<hebasto>
no, cmake is _not_ broken; but we are not able to use newer useful features
<instagibbs>
darosior there are dozens of us top users
<sipa>
still, 22.04 is supported until 2027
<hebasto>
correct
<darosior>
instagibbs: i'm on it
<sipa>
i'd hate to be in a situation where some important user chooses not to upgrade because they want to build from source, and they're stuck on an older platform
<sipa>
so i guess it's a trade-off, how important are those features
<fanquake>
unless something is broken, I don't see why we'd "drop support" for something, if everything still works fine
<sipa>
fanquake: i mean, it's a similar consideration we make for e.g. updating to a new C++ standard, which implies dropping support for some older platforms
<fanquake>
You mean in the case that the default compiler can no-longer compile the source?
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<sipa>
right
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<fanquake>
I do sometimes wish we could get users to install a newer compiler, if there system one is aging
<fanquake>
In this case, I'm not sure we should drop support for an LTS distro, because of an old, not actually broken, CMake
<hebasto>
I was expecting this outcome :)
<fanquake>
It'd be good if you could elaborate on what the actual problem is
<fanquake>
It's not clear what the "newer/useful" CMake features, we need to start using
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<hebasto>
my initial motivation mostly was not about CMake features, but rather my personal burden to keep Ubuntu 22.04 LTS instance and perform testing on it
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<bitcoin-git>
[bitcoin] l0rinc opened pull request #33353: logs: show reindex progress in `ImportBlocks` (master...l0rinc/show-reindex-progress) https://github.com/bitcoin/bitcoin/pull/33353
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<bitcoin-git>
[bitcoin] sipa opened pull request #33354: txgraph: use enum Level instead of bool main_only (master...202509_txgraph_explicit_level) https://github.com/bitcoin/bitcoin/pull/33354
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<bitcoin-git>
bitcoin/master 4d4789d woltx: net: Prevent node from binding to the same CService
<bitcoin-git>
bitcoin/master 2c8a478 Ava Chow: Merge bitcoin/bitcoin#33231: net: Prevent node from binding to the same `C...
<bitcoin-git>
[bitcoin] achow101 merged pull request #33231: net: Prevent node from binding to the same `CService` (master...mulitple_binds) https://github.com/bitcoin/bitcoin/pull/33231