--- Log opened Thu May 23 00:00:21 2019
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02:25 < bitcoin-git> [bitcoin] hebasto opened pull request #16077: docs: Follow ISO/IEC 14882 terms and definitions (master...20190523-iso-parameter) https://github.com/bitcoin/bitcoin/pull/16077
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03:43 < stevenroose> Does bitcoind have an RPC that either (1) gives the xpub of the master priv (the one that dumpwallet gives) or (2) allows calculating the xpub of an xpriv?
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05:24 < bitcoin-git> [bitcoin] LongShao007 opened pull request #16078: replace tx hash with txid in test rawtransaction (master...pytest) https://github.com/bitcoin/bitcoin/pull/16078
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07:21 < achow101> stevenroose: no
07:22 < stevenroose> achow101: thanks
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07:40 < bitcoin-git> [bitcoin] stevenroose opened pull request #16079: wallet_balance.py: Prevent edge cases (master...wallet-balance-test) https://github.com/bitcoin/bitcoin/pull/16079
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07:56 < dongcarl> cfields: Trying to understand your fork of cctools-port... Out of the 5 commits that you made that's no upstream, they've taken care of openssl and uuid (the first 2 commits), but I'm having trouble understanding the remaining 3... Namely: 3a2152b8e4d74601d9976f75aa7c30fd2b54733f, 81589bba090b29989dee31d8f04a78d917b34589, and ee31ae567931c426136c94aad457c7b51d844beb
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08:40 < bitcoin-git> [bitcoin] MarcoFalke pushed 2 commits to master: https://github.com/bitcoin/bitcoin/compare/12fd4bbd1ed9...b4223dd5f113
08:40 < bitcoin-git> bitcoin/master bb41e63 Steven Roose: wallet_balance.py: Prevent edge cases
08:40 < bitcoin-git> bitcoin/master b4223dd MarcoFalke: Merge #16079: wallet_balance.py: Prevent edge cases
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08:41 < bitcoin-git> [bitcoin] MarcoFalke merged pull request #16079: wallet_balance.py: Prevent edge cases (master...wallet-balance-test) https://github.com/bitcoin/bitcoin/pull/16079
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09:46 < bitcoin-git> [bitcoin] MarcoFalke pushed 2 commits to master: https://github.com/bitcoin/bitcoin/compare/b4223dd5f113...0b058ba69d85
09:46 < bitcoin-git> bitcoin/master e23809a Chris Capobianco: [rpc] deriveaddresses: Correct descriptor checksum in RPCExamples
09:46 < bitcoin-git> bitcoin/master 0b058ba MarcoFalke: Merge #16024: [rpc] deriveaddresses: Correction of descriptor checksum in ...
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09:46 < bitcoin-git> [bitcoin] MarcoFalke merged pull request #16024: [rpc] deriveaddresses: Correction of descriptor checksum in RPC example (master...2019-05-14-deriveaddresses-example-checksum) https://github.com/bitcoin/bitcoin/pull/16024
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09:51 < bitcoin-git> [bitcoin] jonatack opened pull request #16080: build/doc: update bitcoin_config.h packages, release process (master...bitcoin_config-and-release_process-updates) https://github.com/bitcoin/bitcoin/pull/16080
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10:39 < bitcoin-git> [bitcoin] MarcoFalke pushed 5 commits to master: https://github.com/bitcoin/bitcoin/compare/0b058ba69d85...65c4bbe629bb
10:39 < bitcoin-git> bitcoin/master cc25885 practicalswift: Move LockAnnotation from threadsafety.h (imported code) to sync.h (our cod...
10:39 < bitcoin-git> bitcoin/master 3a80944 practicalswift: Move LockAnnotation to make it reflect the truth
10:39 < bitcoin-git> bitcoin/master de9b5db practicalswift: Make sure the compile-time locking promises given via LockAnnotation:s hol...
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10:39 < bitcoin-git> [bitcoin] MarcoFalke merged pull request #16034: refactoring: Rename LockAnnotation to LockAssertion and add run-time check to it  (master...make-sure-LockAnnotation-promises-are-truthful) https://github.com/bitcoin/bitcoin/pull/16034
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11:34 < bitcoin-git> [bitcoin] fanquake reopened pull request #13442: Convert the 1-way SSE4 SHA256 code from asm to intrinsics (master...201806_sse4intrin) https://github.com/bitcoin/bitcoin/pull/13442
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12:00 < wumpus> #startmeeting
12:00 < lightningbot> Meeting started Thu May 23 19:00:30 2019 UTC.  The chair is wumpus. Information about MeetBot at http://wiki.debian.org/MeetBot.
12:00 < lightningbot> Useful Commands: #action #agreed #help #info #idea #link #topic.
12:00 < sipa> ohai
12:00 < wumpus> #bitcoin-core-dev Meeting: wumpus sipa gmaxwell jonasschnelli morcos luke-jr sdaftuar jtimon cfields petertodd kanzure bluematt instagibbs phantomcircuit codeshark michagogo marcofalke paveljanik NicolasDorier jl2012 achow101 meshcollider jnewbery maaku fanquake promag provoostenator aj Chris_Stewart_5 dongcarl gwillen jamesob ken281221 ryanofsky gleb moneyball kvaciral
12:00 < achow101> hi
12:01 < promag> hi
12:01 < fanquake> Hi
12:01 < achow101> only here for 30 min or so (if the meeting even goes that long)
12:01 < meshcollider> hi
12:01 < jamesob> hi
12:01 < gwillen> hi
12:01 < wumpus> proposed topics? (none on moneyball 's list)
12:02 < phantomcircuit> hi
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12:02 < jonasschnelli> hi
12:02 < Chris_Stewart_5> hello
12:03 < wumpus> hello
12:03 < wumpus> #topic High priority for review
12:03 < wumpus> https://github.com/bitcoin/bitcoin/projects/8
12:04 < wumpus> current PRs: #15427 #15741 #15759 #15024 #15649
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15427 | Add support for descriptors to utxoupdatepsbt by sipa · Pull Request #15427 · bitcoin/bitcoin · GitHub
12:04 < moneyball> hi
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15741 | Batch write imported stuff in importmulti by achow101 · Pull Request #15741 · bitcoin/bitcoin · GitHub
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15759 | [p2p] Add 2 outbound blocks-only connections by sdaftuar · Pull Request #15759 · bitcoin/bitcoin · GitHub
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15024 | Allow specific private keys to be derived from descriptor by meshcollider · Pull Request #15024 · bitcoin/bitcoin · GitHub
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15649 | Add ChaCha20Poly1305@Bitcoin AEAD by jonasschnelli · Pull Request #15649 · bitcoin/bitcoin · GitHub
12:04 < kanzure> hi
12:04 < jamesob> can I ask that #15976 be added? it's prone to rebase conflicts and pretty close to ack-threshold for merge (I think)
12:04 < gribble> https://github.com/bitcoin/bitcoin/issues/15976 | refactor: move methods under CChainState (pt. 1) by jamesob · Pull Request #15976 · bitcoin/bitcoin · GitHub
12:04 < jamesob> (and blocks the assumeutxo project)
12:04 < wumpus> jamesob: of course
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12:05 < jamesob> wumpus: thanks
12:05 < fanquake> done
12:05 < dongcarl> Could we add #16059? Small but without it linux gitian builds are broken right now
12:05 < gribble> https://github.com/bitcoin/bitcoin/issues/16059 | configure: Fix thread_local detection by dongcarl · Pull Request #16059 · bitcoin/bitcoin · GitHub
12:06 < wumpus> dongcarl: sure
12:06 < wumpus> fanquake: thanks
12:06 < jnewbery> hi
12:06 < fanquake> I think that can be merged quite soon. I'm testing it at the moment.
12:06 < fanquake> Have added to high prio.
12:06 < dongcarl> thank you
12:06 < wumpus> why are we using thread_local again btw?
12:06 < jamesob> for thread names
12:06 < wumpus> I thought that was removed at some point 
12:07 < jamesob> cory and I came up with a way to do without at some point but it was pretty convoluted
12:08 < fanquake> It's also linux and openbsd? only atm. Broken on win, freebsd and we can't use it on macOS until we are using a newer sdk.
12:08 < wumpus> doesn't pthread have a way to keep track of thread names?
12:09 < wumpus> I thought that was how we did that, anyway
12:09 < jonasschnelli> fanquake: you mean SDK for the depends build?
12:09 < wumpus> that'll also show up in top and such
12:09 < jamesob> there's some posix key-value store API we were using with the pthreads id to avoid thread_local, but it ended up being a lot of code IIRC
12:09 < wumpus> pthread_setname or such
12:10 < wumpus> pthread_getname_np
12:10 < fanquake> jonasschnelli yes. Although now I think about it, we are building against 10.11 which I think means we can use it. Have to double check.
12:10 < jonasschnelli> Also since this is nice for debugging, the depends build matters not too much
12:11 < sipa> wumpus: https://github.com/bitcoin/bitcoin/blob/master/src/util/threadnames.cpp
12:11 < wumpus> do we have a whole util to keep track of thread names? wow
12:11 < ryanofsky> #16059 is a straightforward fix, simpler than rewriting thread names imo...
12:12 < gribble> https://github.com/bitcoin/bitcoin/issues/16059 | configure: Fix thread_local detection by dongcarl · Pull Request #16059 · bitcoin/bitcoin · GitHub
12:12 < jamesob> ryanofsky: agree
12:12 < wumpus> I had no idea it was such a big issue, anyhow, any other topics?
12:12  * luke-jr for one finds thread names useful sometimes
12:12 < jamesob> we avoided doing pthread_getname because there are supposedly implementation problems (https://stackoverflow.com/questions/2369738/how-to-set-the-name-of-a-thread-in-linux-pthreads/7989973#7989973). see also the notes at the bottom of this PR description: https://github.com/bitcoin/bitcoin/pull/13099
12:12 < gribble> https://github.com/bitcoin/bitcoin/issues/7989973 | HTTP Error 404: Not Found
12:14 < wumpus> jamesob:thanks
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12:15 < meshcollider> Not a topic, but I won't be able to attend tomorrows wallet meeting so could someone please volunteer to host it?
12:15 < wumpus> anyonw?
12:15 < sipa> i'll be here, if there's interest
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12:16 < fanquake> Maybe #15993 for a topic? Has been through a few iterations but seems to be more ready now?
12:16 < jnewbery> I'll be there
12:16 < gribble> https://github.com/bitcoin/bitcoin/issues/15993 | net: Drop support of the insecure miniUPnPc versions by hebasto · Pull Request #15993 · bitcoin/bitcoin · GitHub
12:16 < wumpus> fanquake:I think that should just be merged?
12:16 < wumpus> fanquake: is there anything to discuss about it?
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12:17 < luke-jr> did configure finally get updated?
12:17 < luke-jr> not that I see..
12:17 < wumpus> I don't know...
12:17 < MarcoFalke> Seems like it is just shuffling things around and not actually dropping support
12:17 < fanquake> wumpus I haven't tested any of the changes, just seemed there was discussion about which versions to drop support for, and wether other versions had actually been patched. 
12:18 < wumpus> it's dropping support for <10, which is fine, the only thing controversial was <14
12:18 < luke-jr> looks like it would detect older miniupnpc libraries, then fail to compile
12:18 < wumpus> because that's still in debian table
12:18 < wumpus> stable
12:19 < fanquake> ok.
12:19 < fanquake> One other topic is suggestions for 0.18.1 backporting that aren't already in #16035
12:19 < gribble> https://github.com/bitcoin/bitcoin/issues/16035 | 0.18.1: Backports by MarcoFalke · Pull Request #16035 · bitcoin/bitcoin · GitHub
12:19  * wumpus would prefer to drop support for miniUPnP completely but, don't feel like having that discussion
12:20 < wumpus> #topic backport suggestions for 0.18.1
12:21 < wumpus> anything?
12:21 < promag> maybe #14984?
12:21 < gribble> https://github.com/bitcoin/bitcoin/issues/14984 | rpc: Speedup getrawmempool when verbose=true by promag · Pull Request #14984 · bitcoin/bitcoin · GitHub
12:22 < wumpus> it's not really a bugfix
12:22 < MarcoFalke> It is not strictly a bugfix.
12:22 < fanquake> Apparently that isn't actually a clean backport, and maybe not worth it if it's just perfomance gain.
12:22 < wumpus> unless performance is *really* horrible right now
12:22 < MarcoFalke> Only when the mempool is large ;)
12:22 < wumpus> if it's non-trivial to backport too then better not to, I think
12:23 < promag> right, large mempool, about 30% faster
12:23 < promag> no problem, just asked
12:23 < wumpus> no problem, thanks for suggesting something
12:24 < MarcoFalke> I am mostly waiting on those to get merged: https://github.com/bitcoin/bitcoin/milestone/41
12:24 < wumpus> are we planning on doing a 0.18.1 soon btw?
12:24 < wumpus> I mean, is there anything motivating it?
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12:25 < MarcoFalke> nothing urgent, no
12:25 < promag> ops, forgot about #15453
12:25 < gribble> https://github.com/bitcoin/bitcoin/issues/15453 | Starting bitcoin-qt with -nowallet and then opening a wallet does not show the wallet · Issue #15453 · bitcoin/bitcoin · GitHub
12:25 < fanquake> A couple of bug fixes for potentially confusing behaviour, like #15952, but nothing catastrophic
12:25 < gribble> https://github.com/bitcoin/bitcoin/issues/15952 | Cant open wallet · Issue #15952 · bitcoin/bitcoin · GitHub
12:25 < MarcoFalke> oh, maybe the gcc compile bug?
12:26 < wumpus> MarcoFalke:yes maybe that
12:26 < MarcoFalke> But it seemed to only affect the tests, so ... flip a coin?
12:26 < wumpus> would be good to have that out of the way
12:26 < wumpus> we don't *know*
12:26 < MarcoFalke> jup
12:26 < fanquake> #15983
12:26 < gribble> https://github.com/bitcoin/bitcoin/issues/15983 | build with -fstack-reuse=none by MarcoFalke · Pull Request #15983 · bitcoin/bitcoin · GitHub
12:27 < fanquake> Maybe wait another week or two then, assuming outstanding PRs are merged, cut an rc1 ?
12:27 < wumpus> that definitely needs backport to 0.18
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12:27 < MarcoFalke> It is the first thing in #16035
12:27 < gribble> https://github.com/bitcoin/bitcoin/issues/16035 | 0.18.1: Backports by MarcoFalke · Pull Request #16035 · bitcoin/bitcoin · GitHub
12:27 < wumpus> it's labeled for 0.17.2 but that's not very likely  to happen
12:28 < wumpus> oh okay
12:28 < sipa> has anyone done general benchmarks to see the affect of -fstack-reuse=none ?
12:28 < fanquake> jamesob
12:28 < fanquake> sipa https://github.com/bitcoin/bitcoin/pull/15983#issuecomment-490700321
12:28 < jamesob> I tried but I don't think I was doing it right
12:28 < MarcoFalke> sipa: We couldn't find any significant changes on our hardware
12:28 < wumpus> I doubt it affects performance at all
12:28 < sipa> MarcoFalke: that's not surprising, but good to confirm
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12:28 < wumpus> just stack use
12:29 < gmaxwell> My only concern was that it would break some other performance optimization, sounds like it doesn't.
12:30 < wumpus> anyhow, upgrade to a compiler that doesn't have the bug (when there's one)
12:30 < wumpus> performance loss is preferable to random unpredictable corruption
12:30 < wumpus> certainly for something like bitcoin
12:30 < MarcoFalke> right
12:31 < wumpus> (I mean it's obviously different if say, validation becomes two times as slow or something extreme like that, but we'd have noticed)
12:31 < gmaxwell> if the performance loss were truly significant though, we might want to look for other alternative workarounds, good that we don't need to.
12:31 < wumpus> of course
12:31 < sipa> agree
12:32 < wumpus> any other topics?
12:32 < promag> is this worth it? https://github.com/bitcoin/bitcoin/pull/16065#issuecomment-494853746
12:33 < wumpus> avoiding hashing is always the best sha256 optimization :)
12:34 < jonasschnelli> ;-)
12:34 < wumpus> (but if it's worth it depends on what slice of the total the 2.44s is, if it's on the whole initial sync it's neglible)
12:35 < fanquake> If anyone can reproduce #16027 that might be handy. Has come up a couple times now.
12:35 < gribble> https://github.com/bitcoin/bitcoin/issues/16027 | client 0.18.0 crashes when computer wakes up from hibernation · Issue #16027 · bitcoin/bitcoin · GitHub
12:35 < MarcoFalke> Yeah, sync is ~hours, so a second doesn't matter at all
12:35 < wumpus> MarcoFalke: right
12:35 < promag> wumpus: right, agree at the moment saving a couple of seconds isn't worth it
12:35 < gmaxwell> that sounds like it maybe more more relevant to propagation at the tip.
12:35 < wumpus> and that's within the measuring noise isn't it?
12:36 < gmaxwell> e.g. time from getting a block to sending the first non-HB peer.
12:36 < wumpus> gmaxwell: yes, that latency would be useful to measure
12:36 < wumpus> if it makes a significant difference there then it could still be worth it
12:36 < gmaxwell> the fact that we're rehashing in general suggests we've got something kinda wrong, layout wise.
12:36 < wumpus> true
12:37 < promag> ok, I'll keep doing those profiles
12:37 < MarcoFalke> Could just cache the hash in the data structure?
12:37 < wumpus> depends also on how much more complicated it makes the code, or whether it increases memory use, etc
12:37 < wumpus> how much it increases memory use, of course caching increases memory use
12:38  * MarcoFalke ducks
12:38 < sipa> jamesob: mr profiling... do we have any way to generally benchmark block-propagation-speed-at-synced-tip ?
12:38 < jamesob> mmm short of parsing verbose debug.log, I don't think so. not built into bitcoinperf yet, at any rate :)
12:38 < promag> MarcoFalke: the hash is only necessary while processing/validating
12:39 < sipa> jamesob: i think it would be very valuable to have; especially for scenarios where the block's transactions have already been validated in the mempool
12:39 < sipa> as there are very relevant performance improvements there that'd generally be dwarfed by script validation
12:39 < MarcoFalke> sipa: Would that require two nodes?
12:39 < MarcoFalke> or are you talking about a micro benchmark
12:39 < jamesob> sipa: yeah, agree that's a metric worth tracking
12:40 < jamesob> happy to build something for it
12:40 < sipa> perhaps we should do some brainstorming about that, but maybe outside the meeting
12:40 < wumpus> jamesob: cool!
12:40 < fanquake> If anyone is interested in guix building, dongcarl has been doing a lot of work in #15277. Would be good to get some more builds to compare hashes with.
12:40 < gribble> https://github.com/bitcoin/bitcoin/issues/15277 | [Help Wanted] contrib: Enable building in Guix containers by dongcarl · Pull Request #15277 · bitcoin/bitcoin · GitHub
12:41 < MarcoFalke> sipa: If it is for bitcoinperf: https://github.com/chaincodelabs/bitcoinperf/issues
12:41 < gmaxwell> sipa: there are tests in bitcoinfibre.
12:41 < wumpus> fanquake: if there's clear instructions to test, I'm happy to try
12:41 < promag> ah btw, one thing that takes a while is base_uint<BITS>& base_uint<BITS>::operator>>=(unsigned int shift)
12:41 < dongcarl> wumpus: I'll update and link you
12:41 < wumpus> dongcarl: great !
12:41 < sipa> promag: inside the division logic for retargetting that's expected
12:41 < sipa> most of the time is in shifts
12:42 < gmaxwell> MarcoFalke: The logical place to cache hashes in block objects themselves, doing so there is irrelevant memory use wise (32 bytes in a 1.2MB object), but complicates constness.
12:42 < fanquake> I have a setup/container guide for a quick Guix setup here as well: https://github.com/fanquake/core-review/tree/master/guix
12:43 < gmaxwell> promag: if thats actually taking a non-trivial amount of some real usecase, the division could be made faster... it uses a fairly naieve algorithim right now.
12:43 < wumpus> agree it's irrelevant on block objects, it's mostly CBlockIndex where it counts because so many of them are permanently in memory
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12:43 < jamesob> fanquake: cool!
12:44 < wumpus> fanquake:nice
12:45 < wumpus> any other topics?
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12:47 < wumpus> #endmeeting
12:47 < lightningbot> Meeting ended Thu May 23 19:47:00 2019 UTC.  Information about MeetBot at http://wiki.debian.org/MeetBot . (v 0.1.4)
12:47 < lightningbot> Minutes:        http://www.erisian.com.au/meetbot/bitcoin-core-dev/2019/bitcoin-core-dev.2019-05-23-19.00.html
12:47 < lightningbot> Minutes (text): http://www.erisian.com.au/meetbot/bitcoin-core-dev/2019/bitcoin-core-dev.2019-05-23-19.00.txt
12:47 < lightningbot> Log:            http://www.erisian.com.au/meetbot/bitcoin-core-dev/2019/bitcoin-core-dev.2019-05-23-19.00.log.html
12:47 < jamesob> gmaxwell: were those fibre tests you mentioned in the microbench or somewhere else?
12:48 < gmaxwell> microbench, IIRC
12:49 < gmaxwell> BlueMatt: I summon thee
12:49 < BlueMatt> hmm
12:50 < luke-jr> is it just me, or did gmaxwell's nick change colour?
12:50 < BlueMatt> gmaxwell: note that CBlock const-ness is already fucked (yay CheckBlock), not to say we should make it worse, though
12:50 < kanzure> btw, i'm still seeking submissions for topics for upcoming physical meetup.
12:50 < promag> gmaxwell: effective
12:51 < jamesob> BlueMatt gmaxwell: this thing? https://github.com/bitcoinfibre/bitcoinfibre/commit/a04d57208e09c21d241dc880dffa8eb4efbda1e5
12:52 < BlueMatt> whats the question?
12:53 < gmaxwell> BlueMatt: 12:38:07 < sipa> jamesob: mr profiling... do we have any way to generally benchmark block-propagation-speed-at-synced-tip ?
12:53 < gmaxwell> 12:41:03 < gmaxwell> sipa: there are tests in bitcoinfibre.
12:53 < gmaxwell> basically promag has an optimization that avoids rehashing the whole block when accepting it.
12:53 < gmaxwell> her rehashing the header perhaps actually.
12:53 < promag> gmaxwell: no the block
12:54 < promag> yap, the blockheader
12:54 < BlueMatt> when do we hash the block?
12:54 < BlueMatt> yea, blockheader, ok
12:54 < BlueMatt> there was a patch like 5 years ago that removed most of the duplicate hashes in acceptance path
12:54 < BlueMatt> how many are left?
12:54 < promag> https://github.com/bitcoin/bitcoin/pull/16065#issuecomment-494853746
12:54 < gmaxwell> header yea, so question is it worthwhile? obviously not against IBD, but maybe at tip relay for non-hb peers.
12:56 -!- bitcoin-git [~bitcoin-g@x0f.org] has joined #bitcoin-core-dev
12:56 < bitcoin-git> [bitcoin] MarcoFalke pushed 3 commits to master: https://github.com/bitcoin/bitcoin/compare/65c4bbe629bb...fe47ae168b57
12:56 < bitcoin-git> bitcoin/master 3ee28c5 Jon Atack: build: bump bitcoin_config.h packages to v0.18
12:56 < bitcoin-git> bitcoin/master 8afca32 Jon Atack: doc: add bitcoin_config.h PACKAGE updates to release process
12:56 < bitcoin-git> bitcoin/master fe47ae1 MarcoFalke: Merge #16080: build/doc: update bitcoin_config.h packages, release process...
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12:56 < BlueMatt> hmm, only things I have that would test this is looking at debug.log (which I have scripts that do, but its fibre-specific)
12:57 < gmaxwell> BlueMatt: I thought one of your fibre unit tests tested accepting a block.
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12:57 < bitcoin-git> [bitcoin] MarcoFalke merged pull request #16080: build/doc: update bitcoin_config.h packages, release process (master...bitcoin_config-and-release_process-updates) https://github.com/bitcoin/bitcoin/pull/16080
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12:57 < BlueMatt> they do not, I believe
12:57 < BlueMatt> they do test the equivalent of getting a block in via fibre and converting it to a CBlock for acceptance
12:57 < BlueMatt> but nothing further
12:58 < gmaxwell> ah, okay, my mistake then.
12:59 < jamesob> so if we were to bench acceptance-at-tip, would it make sense to have different fixtures for HB vs. LB?
13:00 < gmaxwell> Yes. Both figures are important and they're radically different.
13:01 < gmaxwell> Because HB relay happens before EVERYTHING, including validation. 
13:01 < gmaxwell> (okay maybe my everything was still to uppercase)
13:01 < gmaxwell> too*
13:02 < jamesob> hm, in net_processing:SendMessages?
13:04 < jamesob> https://github.com/jamesob/bitcoin/blob/b2a6b0216192b6e8428f1a80b47f5178fccb961a/src/net_processing.cpp#L3587-L3590
13:08 < gmaxwell> when I'm benchmarking I'm normally looking at logs with microsecond time on for the difference between these lines:
13:09 < gmaxwell> 2019-05-23T20:07:22.551652Z received: cmpctblock (16841 bytes) peer=1
13:09 < gmaxwell> 2019-05-23T20:07:22.571894Z sending cmpctblock (16841 bytes) peer=5
13:09 < gmaxwell> 2019-05-23T20:07:22.654285Z SendMessages: sending header 00000000000000000013886cc5bfa15d88db56f024a66b92f4b10ecf46922ff5 to peer=2
13:10 < gmaxwell> The first is getting the cmpct block, the second is sending the first HB block, and the third is the first non-HB announcement.
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13:12 < jamesob> gmaxwell: ah okay, that helps
13:12 < gmaxwell> it might be interesting to setup a little stats datastructure that you can get at with an RPC.
13:14 < gmaxwell> That keeps a couple relevant times --- like the above two deltas for the last block, and maybe a couple EWMA averages of them.  Then the python test framework could be used to do some benchmarking without relying on log parsing (which we break with frustrating frequency)
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13:16 < gmaxwell> one thing to keep in mind is that cmpctblock is only the relevant start point when there are no missing txn, otherwise the blocktxn message is.
13:16 < gmaxwell> (if you measure cmpct->cmpct when there are missing txn, you'll include the response time of the peer and network latency-- which is itself also very interesting but perhaps doesn't make for a clean test :) )
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13:39 < jamesob> gmaxwell: thanks for the pointers. I was actually about to start working on a bitcoind log parsing lib, but the RPC idea's interesting too. I wonder if maintaining some of those stats datastructures under an #if defined(DEBUG) wouldn't be too invasive
13:40 < jamesob> err probably not DEBUG; we might want a separate configure flag I guess
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13:58 < gmaxwell> Ifdefs are kind of invasive, I don't think some operational stats would be bad to have at runtime regardless.
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17:19 < ahmed_> is this chan alive?
17:21 < gmaxwell> ahmed_: yes, very
17:21 < ahmed_> aye awesome
17:21 < gmaxwell> ahmed_: see the logs in the topic.
17:21 < ahmed_> just checking since #bitcoin-dev is dead haha
17:22 < ahmed_> hi guysquick question for anyone familiar with mining/asicboost 
17:22 < ahmed_> 01:17 I've looked at the spec, but i cant seem to get any miners to accept it
17:22 < ahmed_> 01:17 here is what im doing
17:22 < ahmed_> 01:20 https://gist.github.com/ahmedbodi/3f05ba501cfe1201b8cc7fe7e10496c3
17:26 < gmaxwell> sorry, don't know anything about it. You might want to try reaching out to the document author, or contacting slushpool?
17:27 < ahmed_> all good. i've looked at the spec that's been creating and i've followed it to the T
17:27 < ahmed_> so unless something is different im not quite sure myself either
17:27 < jb55> should walletnotify pass the wallet name? just noticed my emailer was failing: it was calling gettransaction with the wrong -rpcwallet when fetching the tx inside the walletnotify script
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17:34 < sipa> jb55: i think walletnotify doesn't pass the wallet name at all
17:35 < sipa> there is 
17:35 < sipa> https://github.com/bitcoin/bitcoin/pull/13339
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17:45 < jb55> I need dis
17:46 < jb55> sipa: thx
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19:02 < gmaxwell> MarcoFalke: Would you care to offer a version of #15983 up to upstream libsecp256k1? (mindful of CFLAGS vs CXXFLAGS).  If you don't have time, thats okay. 
19:02 < gribble> https://github.com/bitcoin/bitcoin/issues/15983 | build with -fstack-reuse=none by MarcoFalke · Pull Request #15983 · bitcoin/bitcoin · GitHub
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23:11 < kallewoof> achow101: Would be great if you could check https://github.com/bitcoin/bitcoin/pull/13756#discussion_r285767473 when you have some time.
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--- Log closed Fri May 24 00:00:21 2019