<sipa>
Usually a few hours on my 16-core machine, though I haven't benchmarked.
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<achow101>
depends on how many dependencies need to be built. as little as 20 minutes, and as long as overnight
<_aj_>
20 minutes?!?!? wow. for all archs?
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<fanquake>
if all Guix profiles, and depends are already built, probably < 45 minutes for all hosts
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<provoostenator>
What's the difference (if any) between running the fuzzer directly on the corpus directory vs running without the corpus and then merging?
<darosior>
provoostenator: well without corpus you restart from scratch basically. The existing corpus guides the engine.
<provoostenator>
So what's the puprose of merging? Just for parallel work to prevent duplicate new corpus entries?
<provoostenator>
A comment from sipa points out that you can "merge" the corpus into a empty folder, so it picks the smaller inputs. But he also points out why this may not be a good idea.
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<MacroFake>
provoostenator: If you want to generate inputs, there is no good answer. Probably best is to span as much different settings as possible. That is, try different fuzz engines, start with empty folder, start with inputs, change all settings of the fuzz engine, handcraft some inputs, cross-polinate, ...
<MacroFake>
provoostenator: If you want to add inputs to qa-assets, you will need to "merge" them. Otherwise the repo will grow
<MacroFake>
(We are already over capacity, so I wonder why GitHub hasn't deleted it already)
<MacroFake>
*will grow too fast
<MacroFake>
provoostenator: If you want to minimize a set of inputs (yes this may be problematic), something we need to do to avoid running into CI timeout due to a too large set of inputs, you'll merge into an empty folder
<MacroFake>
fanquake: Are there many examples of build fixes getting backported? Only I am aware of are missing includes and some guix backports, once guix was fresh out of the box.
<bitcoin-git>
bitcoin/master 741c215 brunoerg: test: remove unused vars in `feature_block`
<bitcoin-git>
bitcoin/master 51d51d3 MarcoFalke: Merge bitcoin/bitcoin#26507: test: remove unused vars in `feature_block`
<bitcoin-git>
[bitcoin] MarcoFalke merged pull request #26507: test: remove unused vars in `feature_block` (master...2022-11-unused-feature-block-test) https://github.com/bitcoin/bitcoin/pull/26507
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<fanquake>
few other examples #23045 #23315 #26350
<gribble>
https://github.com/bitcoin/bitcoin/issues/26350 | [22.x] Revert "build: Use Homebrews sqlite package if it is available" by fanquake · Pull Request #26350 · bitcoin/bitcoin · GitHub
<fanquake>
A lot of the time it's been dependency related things, which were outside our control. That should (hopefully) be less of an issue going forward
<bitcoin-git>
bitcoin/master b49e19c fanquake: doc: use arch agnostic clang path in fuzzing doc (macOS)
<bitcoin-git>
bitcoin/master de1d189 MarcoFalke: Merge bitcoin/bitcoin#27056: doc: use arch agnostic clang path in fuzzing ...
<bitcoin-git>
[bitcoin] MarcoFalke merged pull request #27056: doc: use arch agnostic clang path in fuzzing doc (macOS) (master...macos_fuzzing_doc_arch_agnostic) https://github.com/bitcoin/bitcoin/pull/27056
<fanquake>
> probably < 45 minutes for all hosts
<fanquake>
real44m33.324s
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<bitcoin-git>
[bitcoin] hebasto opened pull request #27062: ci: Use `GLOBAL_TASK_TEMPLATE` in "macOS 10.15" task (master...230208-ci-macos) https://github.com/bitcoin/bitcoin/pull/27062
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<bitcoin-git>
[bitcoin] hebasto opened pull request #27063: ci: Use the latest Ubuntu LTS for "ARM64 Android APK" task (master...230208-ci-apk) https://github.com/bitcoin/bitcoin/pull/27063
<bitcoin-git>
[bitcoin] pinheadmz opened pull request #27064: system: use %LOCALAPPDATA% as default datadir on windows (master...windows-local-datadir) https://github.com/bitcoin/bitcoin/pull/27064
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