1 2017-03-08T00:11:21  *** tripleslash has joined #bitcoin-core-dev
  2 2017-03-08T00:17:40  <cfields> gitian builders: v0.14.0 detached sigs are pushed
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  7 2017-03-08T01:01:15  <midnightmagic> cfields: \o thanks
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 42 2017-03-08T06:22:31  <wumpus> all gitian signatures match this time, this is great
 43 2017-03-08T06:25:14  <wumpus> thanks cfields
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 45 2017-03-08T06:34:50  <sipa> awesome!
 46 2017-03-08T06:37:38  * gmaxwell reloads the mailing list archive webpage
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 59 2017-03-08T07:34:27  <warren> anyone having problems with gitian where it gets stuck at "Checking if target is up"  ?
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 61 2017-03-08T07:43:14  <jonasschnelli> warren: what are you using LXC/KVM?
 62 2017-03-08T07:43:35  <jonasschnelli> warren: maybe check the gitian-builder/logs directory. Cat target.log / install.log
 63 2017-03-08T07:46:18  <warren> KVM ... qemu-system-x86_64 gets stuck with 100% CPU usage, target.log is blank
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 65 2017-03-08T08:24:59  <sipa> on what hardware
 66 2017-03-08T08:25:01  <sipa> ?
 67 2017-03-08T08:31:01  <sipa> in particular: do you have hardware acceleration?
 68 2017-03-08T08:31:18  <sipa> if running inside a VM, it may be resorting to software emulation
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 70 2017-03-08T08:45:30  <warren> model name      : Intel(R) Core(TM) i5-4690S CPU @ 3.20GHz
 71 2017-03-08T08:45:50  <warren> used KVM on this hardware before, I'll figure it out
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 76 2017-03-08T09:28:22  <jonasschnelli> prioritisetransaction <txid> 0 100000000 should lead to (always) include the transaction in the next getblocktemplate call, right?
 77 2017-03-08T09:29:59  <gmaxwell> no, due to caching.
 78 2017-03-08T09:30:20  <gmaxwell> if the block doesn't change IIRC we'll cache the CNB result for up to 30 seconds.
 79 2017-03-08T09:30:41  <jonasschnelli> Is there a way to drain the cache?
 80 2017-03-08T09:30:52  <gmaxwell> mine a new block.
 81 2017-03-08T09:31:10  <gmaxwell> don't call getblocktemplate for (IIRC) 30 seconds before.
 82 2017-03-08T09:31:53  <jonasschnelli> okay... thanks gmaxwell!
 83 2017-03-08T09:32:09  <gmaxwell> Sorry I don't have a more useful suggestion!
 84 2017-03-08T09:33:25  <jonasschnelli> Well... that's already useful. I know now why.
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 88 2017-03-08T09:45:05  <Lauda> ping wumpus
 89 2017-03-08T09:48:10  <gmaxwell> what is the gpg undocumented option to restrict recv-key to only fetch a key it already knows?
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 92 2017-03-08T09:55:08  <gmaxwell> --refresh-keys ah ha
 93 2017-03-08T09:55:12  <gmaxwell> Lauda: thanks
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 95 2017-03-08T10:02:24  <bitcoin-git> [bitcoin] jonasschnelli opened pull request #9947: Add true/false return value to prioritisetransaction (master...2017/03/ptx) https://github.com/bitcoin/bitcoin/pull/9947
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100 2017-03-08T10:34:25  <Lauda> You're welcome.
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108 2017-03-08T10:58:51  <jonasschnelli> Should we allow to add a fee delta on txn's that are not in the mempool, ... right now we do. I hink we can't change that behavior..
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110 2017-03-08T10:59:35  <dcousens_> Yeah,  I personally use the current behaviour of "CAmount &delta = mapDeltas[hash]; delta += nFeeDelta;"  to prioritize transactions before they are in the mempool
111 2017-03-08T11:00:39  <gmaxwell> jonasschnelli: it is an intentional feature that took extra effort to support. Without it, priority is much less effective.
112 2017-03-08T11:01:05  <gmaxwell> since txn you want to prioritize might not otherwise make it into your mempool at all.
113 2017-03-08T11:01:14  <jonasschnelli> Yes. I see... maybe the return value then should be wether the transaction was already in the mempool or now.
114 2017-03-08T11:01:16  <jonasschnelli> *not
115 2017-03-08T11:07:52  <dcousens_> ooi,  in the above statement,  "Amount &delta = mapDeltas[hash]; delta += nFeeDelta;",  mapDeltas[hash] if unitialized, does it get default constructed to 0 somehow?
116 2017-03-08T11:08:34  <jonasschnelli> Can anyone help me understand why CreateTransaction (CDummySigner VerifyScript seems to be the problem) if I want to use watch-only addresses (no pubkeys available).
117 2017-03-08T11:09:05  <jonasschnelli> If the address is P2PKH, it should be capable to calculate the fee, right...
118 2017-03-08T11:09:14  <jonasschnelli> Guess not possible for P2SH
119 2017-03-08T11:09:46  <jonasschnelli> *[...] understand why CreateTransaction *fails*
120 2017-03-08T11:18:36  <bitcoin-git> [bitcoin] MarcoFalke pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/47510ad3dd51...ac23a7c1f19b
121 2017-03-08T11:18:37  <bitcoin-git> bitcoin/master 6c1fb73 John Newbery: Improve logging in bctest.py if there is a formatting mismatch
122 2017-03-08T11:18:37  <bitcoin-git> bitcoin/master ac23a7c MarcoFalke: Merge #9945: Improve logging in bctest.py if there is a formatting mismatch...
123 2017-03-08T11:18:57  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #9945: Improve logging in bctest.py if there is a formatting mismatch (master...improve_bctest_logging) https://github.com/bitcoin/bitcoin/pull/9945
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125 2017-03-08T11:28:32  <bitcoin-git> [bitcoin] practicalswift opened pull request #9949: [bench] Avoid function call arguments which are pointers to uninitialized values (master...avoid-pointers-to-unitialized-values-in-function-calls) https://github.com/bitcoin/bitcoin/pull/9949
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128 2017-03-08T11:59:11  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #9790: doc/release-notes: Various cleanups (0.14...0.14-relnotes) https://github.com/bitcoin/bitcoin/pull/9790
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133 2017-03-08T12:42:26  <NicolasDorier> jonasschnelli: you may encounter the same problem I stumbled upon while doing my watchonlyhd stuff
134 2017-03-08T12:42:30  <NicolasDorier> take a look at https://github.com/bitcoin/bitcoin/pull/9728/files#diff-b2bb174788c7409b671c46ccc86034bdL1859
135 2017-03-08T12:43:28  <NicolasDorier> basically, watchonly addresses are untrusted if not confirmed
136 2017-03-08T12:43:34  <NicolasDorier> might be your problem
137 2017-03-08T12:46:21  <jonasschnelli> NicolasDorier. Thanks... ill have a look
138 2017-03-08T12:46:43  <NicolasDorier> jonasschnelli: this PR https://github.com/bitcoin/bitcoin/pull/9830 expose the istrusted flag, it might help you to debug
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145 2017-03-08T13:18:05  <bitcoin-git> [bitcoin] MarcoFalke pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/ac23a7c1f19b...8bfa13b15b84
146 2017-03-08T13:18:05  <bitcoin-git> bitcoin/master fdab309 practicalswift: [trivial] Fix typos introduced in 7184e25c80aa8b1629a700bb7a7e290ad0bb2792
147 2017-03-08T13:18:06  <bitcoin-git> bitcoin/master 8bfa13b MarcoFalke: Merge #9936: [trivial] Fix three typos introduced into walletdb.h in commit 7184e25...
148 2017-03-08T13:18:25  <bitcoin-git> [bitcoin] MarcoFalke closed pull request #9936: [trivial] Fix three typos introduced into walletdb.h in commit 7184e25 (master...fix-typos-introduced-in-commit-7184e25c) https://github.com/bitcoin/bitcoin/pull/9936
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162 2017-03-08T14:48:06  <bitcoin-git> [bitcoin] laanwj opened pull request #9951: Wallet database handling abstractions/simplifications (master...2017_03_wallet_dbwrapper) https://github.com/bitcoin/bitcoin/pull/9951
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165 2017-03-08T14:53:26  <bitcoin-git> [bitcoin] laanwj closed pull request #9900: Ban "invalid messagestart" nodes (master...patch-2) https://github.com/bitcoin/bitcoin/pull/9900
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169 2017-03-08T15:04:05  <BlueMatt> wumpus: (or someone) should set v0.14.0 as a release on github (https://github.com/bitcoin/bitcoin/releases)
170 2017-03-08T15:05:46  <wumpus> yes
171 2017-03-08T15:23:53  <bitcoin-git> [bitcoin] laanwj opened pull request #9952: Add historical release notes for 0.14.0 (master...2017_03_014_release_notes) https://github.com/bitcoin/bitcoin/pull/9952
172 2017-03-08T15:26:36  <bitcoin-git> [bitcoin] laanwj pushed 2 new commits to master: https://github.com/bitcoin/bitcoin/compare/8bfa13b15b84...6996e066b538
173 2017-03-08T15:26:36  <bitcoin-git> bitcoin/master 2de6930 Wladimir J. van der Laan: Add historical release notes for 0.14.0
174 2017-03-08T15:26:37  <bitcoin-git> bitcoin/master 6996e06 Wladimir J. van der Laan: Merge #9952: Add historical release notes for 0.14.0...
175 2017-03-08T15:26:59  <arubi> release notes link on github releases is wrong, points to master (which also 404s)
176 2017-03-08T15:27:01  <bitcoin-git> [bitcoin] laanwj closed pull request #9952: Add historical release notes for 0.14.0 (master...2017_03_014_release_notes) https://github.com/bitcoin/bitcoin/pull/9952
177 2017-03-08T15:27:12  <wumpus> arubi: should be fixed now
178 2017-03-08T15:27:17  <wumpus> arubi: you checked too early
179 2017-03-08T15:27:18  <arubi> ah yes
180 2017-03-08T15:27:33  <arubi> well it still says master :)
181 2017-03-08T15:27:49  <arubi> oh, that's where it's pointing, thought it should point to the tag?
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183 2017-03-08T15:28:15  <wumpus> that's on purpose. It points at the historical release notes in master, that's the most recent version of the release notes for a version
184 2017-03-08T15:28:31  <arubi> understood
185 2017-03-08T15:29:01  <wumpus> the one in the tag may be older, e.g. sometimes there are post-mortem fixes, and it can no longer be changed
186 2017-03-08T15:29:58  <arubi> yea, now I figure the one it points to is kept up to date with the release
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190 2017-03-08T15:48:39  <wumpus> normally release notes aren't edited after the release, but it sometimes happens if there's something very wrong
191 2017-03-08T16:00:26  <arubi> I see where I got confused then, I thought for some reason the link would point to the 0.14 branch, and not the 0.14.0 tag, so at some point when 0.14.1 is released then the link points to the same place, but really no reason for it to work like that :)
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194 2017-03-08T16:26:55  <bitcoin-git> [bitcoin] TheBlueMatt opened pull request #9953: Fix shutdown hang with >= 8 -addnodes set (master...2017-03-exit-with-addnode) https://github.com/bitcoin/bitcoin/pull/9953
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218 2017-03-08T18:45:54  <CubicEarth> What would be the computational bottle neck if validation was parallelized to the point of being able to run on a GPU? During chain-sync for example.
219 2017-03-08T18:47:25  <arubi> I think if you could get signature validation on a GPU that would be cool CubicEarth :)
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221 2017-03-08T18:48:41  <gmaxwell> CubicEarth: I would be mildly surprised if it were possible to make it faster that way.
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223 2017-03-08T18:48:52  <arubi> :(
224 2017-03-08T18:49:08  <arubi> oh this is -core-dev, sorry
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229 2017-03-08T18:52:26  <wumpus> GPUs are fking unstable on most user's computers
230 2017-03-08T18:53:05  <gmaxwell> big lesson from mining there, remarkable how bad it was ... I hope things have improved?
231 2017-03-08T18:53:10  <wumpus> utilizing the CPU and GPU during verification by default would be a good way to cause fires and such :)
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233 2017-03-08T18:54:46  <wumpus> doesn't seem so, especially on laptops it's bad, even if it doesn't overheat immediately there's usually crash issues with ancient drivers, strange edge cases, and so on. Unless you have to deal with GPUs (e.g. game develpoment) I"d suggest staying far from using them for anything to be used by end-users. For research in well-controlled settings/hardware they're ok.
234 2017-03-08T18:56:12  <wumpus> at least you can troubleshoot on-site then...
235 2017-03-08T19:02:29  <BlueMatt> gmaxwell: i had to replace the gpu in my workstation because a reasonably-high-end consumer gpu was unstable randomly on a machine that literally only ever displays terminals
236 2017-03-08T19:02:39  <BlueMatt> they're fucking terrible
237 2017-03-08T19:03:27  <BlueMatt> the workstation-class ones seem to be stable, but its clear literally no one ever bothered to test the drivers against them
238 2017-03-08T19:03:37  <CubicEarth> that makes sense for laptops... I was imaging using a typical 4-card mining rig
239 2017-03-08T19:09:38  <gmaxwell> What was thefeeling around eliminating the requirement for gbtresults on segwit activation? IMO we shouldn't have behavior changes like that triggered by network events, if it is at all possible to avoid.  And also changing the version returned to include segwit, even if the flag isn't set-- we're enforce the rules, which is what matters.
240 2017-03-08T19:10:02  <gmaxwell> and there are plenty of miners who will already process transactions.
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243 2017-03-08T19:38:14  <sdaftuar> gmaxwell: i'm on board, i was just thinking today abotu coding that up and suggesting it as a backport to the 0.14 branch
244 2017-03-08T19:39:02  <gmaxwell> yes, well the addnode bug matt is fixing will call for a 0.14.1 at some point. so I was just thinking it would be good to get that done and in it too.
245 2017-03-08T19:39:08  <sdaftuar> agreed
246 2017-03-08T19:39:32  <gmaxwell> I'm sorry guys. Didn't make it 24 hours after release before finding something that calls for a 0.14.1. :(
247 2017-03-08T19:45:53  <BlueMatt> gmaxwell: yea sucks, but oh well
248 2017-03-08T19:56:22  <warren> wumpus: Recently a friend asked what I thought about some startup that aims to accelerate SATA controllers with "low cost desktop GPU's" ...
249 2017-03-08T19:58:55  <gmaxwell> I'm sure you must have misheard something.
250 2017-03-08T19:59:36  <gmaxwell> for example, maybe they intend to accelerate 200 disk raid with 10 disks of parity.
251 2017-03-08T20:01:30  <TD-Linux> warren, just wait until people ask you to solve all their problems with FPGAs
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254 2017-03-08T20:10:21  <warren> gmaxwell: hand wavy "everything is possible" presentation including that and somehow blockchains.  My first question was "Is this reliable?"
255 2017-03-08T20:11:30  <BlueMatt> ok, whos' blocked getting review/merge?
256 2017-03-08T20:11:50  * BlueMatt very much is on #9725, and am willing to trade review of that for other things
257 2017-03-08T20:11:52  <gribble> https://github.com/bitcoin/bitcoin/issues/9725 | CValidationInterface Cleanups by TheBlueMatt · Pull Request #9725 · bitcoin/bitcoin · GitHub
258 2017-03-08T20:16:21  <sdaftuar> gmaxwell: how important do you think it is that CreateNewBlock be fast, when invoked post-segwit activation by a miner that doesn't support it?  in order to be fast, we'd have to cache extra information in the mempool, which i'm not eager to do unless really necessary
259 2017-03-08T20:17:01  <sdaftuar> (making it work at all, on the other hand, is not very hard)
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261 2017-03-08T20:24:22  <gmaxwell> sdaftuar: I think it would be okay if it became slower in that case.
262 2017-03-08T20:25:48  <gmaxwell> my expectation is that we'd eventually go back to the current behavior in a later release. (basically: I think it's fine for a new release to change the interface, it's not so fine for network events to change the interface, if it can be avoided.)
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268 2017-03-08T20:54:50  <luke-jr> BlueMatt: why remove virtual?
269 2017-03-08T20:55:49  <BlueMatt> luke-jr: because I was told you normally remove virtual if you're using override to indicate that you are the implementor of an interface and not something which will be subclassed and overriden
270 2017-03-08T20:56:00  <BlueMatt> I dont care either way, talk to ryanofsky
271 2017-03-08T20:58:37  <ryanofsky> i don't care much either. i suggested it mainly to be consistent with our other code which uses override. and fwiw, google style guide says "For clarity, use exactly one of override, final, or virtual when declaring an override."
272 2017-03-08T21:00:39  <luke-jr> I was under the impression *only* virtuals could have an override, and unless a method is virtual, overrides would de facto get ignored
273 2017-03-08T21:02:04  <BlueMatt> no, you have to be implementing a virtual to get override
274 2017-03-08T21:02:09  <ryanofsky> it's a compile error to write override on a method that's not virtual, so writing both virtual and override is redundant
275 2017-03-08T21:02:10  <BlueMatt> but dont, yourself, have to be virtual
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277 2017-03-08T21:04:06  <luke-jr> oh, I see, these are on subclasses
278 2017-03-08T21:10:58  <paveljanik> BlueMatt, should I make torControlThread static as well (one line below gBase in src/torcontrol.cpp)?
279 2017-03-08T21:11:11  <BlueMatt> paveljanik: anything that can be, probably should be
280 2017-03-08T21:11:21  <BlueMatt> i mean especially for such a generic name like "base", but I suppose why not
281 2017-03-08T21:11:35  <paveljanik> ok
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287 2017-03-08T22:01:03  <bitcoin-git> [bitcoin] sdaftuar opened pull request #9955: Don't require segwit in getblocktemplate for segwit signalling or mining (master...2017-03-mining-segwit-changes) https://github.com/bitcoin/bitcoin/pull/9955
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306 2017-03-08T23:04:05  <bitcoin-git> [bitcoin] jnewbery opened pull request #9956: Reorganise qa directory (master...reorganise_qa) https://github.com/bitcoin/bitcoin/pull/9956
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308 2017-03-08T23:21:09  <warren> Is anyone using gitian with qemu-system-x86_64 (not LXC)?  It seems that the base-trusty-amd64.qcow2 images generated by make-base-vm are currently unbootable.  qemu-system-x86_64 gets stuck with 100% CPU usage on one core, very little memory use, nothing in logs but a localhost:16 VNC port shows it is stuck at trying to boot the disk image.
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310 2017-03-08T23:48:03  <luke-jr> warren: I do, but my base VM is somewhat old
311 2017-03-08T23:50:10  <achow101> warren: I use qemu with gitian and haven't had any issues with make-base-vm
312 2017-03-08T23:51:26  <warren> I did as recently as last month, but using the latest gitian-builder's make-base-vm the new base-trusty-amd64.qcow2 I get no longer works with gbuild.
313 2017-03-08T23:51:42  <warren> achow101: how long ago did you make your base image?
314 2017-03-08T23:51:56  <achow101> whenever 0.14.0rc3 was tagged
315 2017-03-08T23:52:17  <achow101> (last week I think)
316 2017-03-08T23:54:58  <bitcoin-git> [bitcoin] deannolan opened pull request #9958: RPC:Refactor: Remove unreachable code refs #9573 (master...RPC_refactor) https://github.com/bitcoin/bitcoin/pull/9958