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  6 2016-08-02T00:18:39  <GitHub23> [bitcoin] pstratem opened pull request #8445: Move CWallet::setKeyPool to private section of CWallet. (master...2016-07-01-cwallet-api-cleanup) https://github.com/bitcoin/bitcoin/pull/8445
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 16 2016-08-02T01:08:56  <Chris_Stewart_5> is there a line of code I can change somewhere to compile the entire project with c++11 standard?
 17 2016-08-02T01:10:57  <sipa> we already do
 18 2016-08-02T01:12:48  <sipa> as in: you can't compile the 0.13 codebase with c++03 anymore
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 20 2016-08-02T01:14:18  <Chris_Stewart_5> I'm still learning C++ build systems. What file is this specified in exactly? I've searched configure.ac, Makefile.am, Makefile.in
 21 2016-08-02T01:14:32  <Chris_Stewart_5> The only reference to 'c++11' I can find is wrt to boost inside of configure.ac
 22 2016-08-02T01:16:56  <sipa> line 59
 23 2016-08-02T01:17:27  <sipa> AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory])
 24 2016-08-02T01:18:06  <Chris_Stewart_5> Ahh ok. Thank you
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 26 2016-08-02T01:18:55  <phantomcircuit> a bunch of the tests in wallet/test/rpc_wallet_tests.cpp seem to be pretty confused
 27 2016-08-02T01:19:06  <phantomcircuit> things like calling getbalance on an address instead of an account and stuff
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 29 2016-08-02T01:26:39  <sipa> phantomcircuit: wah
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 31 2016-08-02T01:34:24  <phantomcircuit> sipa: yeah... line 104
 32 2016-08-02T01:34:26  <phantomcircuit> BOOST_CHECK_NO_THROW(CallRPC("getbalance " + demoAddress.ToString()));
 33 2016-08-02T01:34:34  <phantomcircuit> that's basically completely meaningless
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 39 2016-08-02T02:15:29  <kanzure> https://twitter.com/kanzure/status/760297796411002880
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 65 2016-08-02T05:50:07  <wumpus> phantomcircuit: I don't think rpc_wallet_tests.cpp should ideally exist at all
 66 2016-08-02T05:50:18  <wumpus> phantomcircuit: it is from before we had the RPC functional tests framework
 67 2016-08-02T05:50:49  <wumpus> unit tests that check RPC behavior, except for the most basic level, aren't really unit tests
 68 2016-08-02T05:51:17  <wumpus> so if someone takes care that everything that is in rpc_wallet_tests.cpp and is worthwhile is being tested in the RPC wallet tests, the file can go
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 70 2016-08-02T05:51:54  <phantomcircuit> wumpus: great im pretty sure we're already doing that and this is doing a bunch of reallllly weird stuff
 71 2016-08-02T05:52:02  <wumpus> great
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 74 2016-08-02T06:27:26  <GitHub156> [bitcoin] laanwj pushed 6 new commits to master: https://github.com/bitcoin/bitcoin/compare/ea268747b6d4...63c03dd41cc0
 75 2016-08-02T06:27:27  <GitHub156> bitcoin/master 56c87e9 Suhas Daftuar: Allow changing BIP9 parameters on regtest
 76 2016-08-02T06:27:27  <GitHub156> bitcoin/master 9c8593d Pieter Wuille: Implement SipHash in Python
 77 2016-08-02T06:27:28  <GitHub156> bitcoin/master a8689fd Suhas Daftuar: Tests: refactor compact size serialization in mininode
 78 2016-08-02T06:27:36  <GitHub180> [bitcoin] laanwj closed pull request #8418: Add tests for compact blocks (master...cb-testing) https://github.com/bitcoin/bitcoin/pull/8418
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118 2016-08-02T08:30:47  <GitHub103> [bitcoin] paveljanik opened pull request #8446: BIP9 parameters on regtest cleanup (master...20160802_shadow_bip9params) https://github.com/bitcoin/bitcoin/pull/8446
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137 2016-08-02T11:18:24  <wumpus> cfields: I don't get it, I don't manage to compile master for ARM anymore: https://github.com/bitcoin/bitcoin/issues/8447  however, in travis it's working. What could be the difference, that I'm compiling my own toolchain?
138 2016-08-02T11:19:10  <wumpus> I guess I'll try in a trusty VM
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141 2016-08-02T11:30:48  <wumpus> maybe this is false alarm and the g++ compiler produced by crosstool lacks some feature to support the c++11 threading primitives, or I've just forgot to pass some setting
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169 2016-08-02T15:10:00  <GitHub15> [bitcoin] laanwj closed pull request #8436: Update release-notes.md (0.13...patch-1) https://github.com/bitcoin/bitcoin/pull/8436
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200 2016-08-02T18:57:03  <Sanakov> Hello everybod: Yesterday we launched https://www.bitfuse.org; Share your files and get paid in bitcoins.
201 2016-08-02T18:57:08  <Sanakov> Please let me know what you think of the website.
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203 2016-08-02T19:03:30  <molz> Sanakov, wrong channel
204 2016-08-02T19:07:36  <Sanakov> where
205 2016-08-02T19:07:48  <Sanakov> do I post stuff like this then? Any suggestions
206 2016-08-02T19:07:50  <Sanakov> Thank you
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210 2016-08-02T19:24:59  <instagibbs> Sanakov, #bitcoin-otc
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213 2016-08-02T19:27:52  <Sanakov> thanks
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216 2016-08-02T19:59:28  <morcos> cfields: sipa: i've benchmarked the cumulative results of what jeremy and i have been working on.
217 2016-08-02T19:59:39  <morcos> http://imgur.com/a/WPvi1
218 2016-08-02T20:00:21  <sipa> morcos: nice!
219 2016-08-02T20:00:26  <sipa> morcos: what is tipcache?
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221 2016-08-02T20:00:37  <morcos> still a bit more work to go before PR's and we probably need to figure out how to apply NicolasDorier's hash cache as well
222 2016-08-02T20:00:59  <morcos> tipcache is a permanent CCoinsViewCache in front of pcoinstip instead of creating a new one each ConnectBlock
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224 2016-08-02T20:01:34  <morcos> its prepopulated every 30 secs by the inputs necessary for a block created by CreateNewBlock (takes on average 13ms)
225 2016-08-02T20:01:47  <sipa> ha
226 2016-08-02T20:01:55  <morcos> and its only cleared after a block is connected
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228 2016-08-02T20:02:12  <morcos> this also serves to keep pcoinsTip itself properly warm
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230 2016-08-02T20:02:40  <sipa> interesting
231 2016-08-02T20:02:51  <morcos> so all these tests are with about 550M of total caches  (300M dbcache, 100M sigcache, approx 150M tipcache)  or 450M dbache if not using tipcache
232 2016-08-02T20:03:41  <morcos> so overal cpu running time is increased of course using tipcache, but it happens out of critical path and its quick enough that its not hurting anything i dont' think 13ms every 30 secs
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235 2016-08-02T20:06:39  <sipa> morcos: i can do benchmarks on a 52-core system, if you have code for me to test
236 2016-08-02T20:06:45  <sipa> s/core/thread/
237 2016-08-02T20:07:28  <jeremyrubin> woooo
238 2016-08-02T20:07:34  <morcos> ah, ok good , yeah i have 16 cores / 32 threads
239 2016-08-02T20:07:42  <jeremyrubin> How many cores?
240 2016-08-02T20:08:06  <sipa> 2 chips, each 13 cores, each 2 threads
241 2016-08-02T20:08:17  <gmaxwell> s/13/14/
242 2016-08-02T20:08:18  <morcos> i tried setting scriptcheck threads to 24 or 32 and it slowed down a lot in all versions
243 2016-08-02T20:08:38  <sipa> oops, 56, not 52
244 2016-08-02T20:08:47  <jeremyrubin> how is the memory bus configured?
245 2016-08-02T20:09:03  <jeremyrubin> im curious how the lockfree stuff is implemented
246 2016-08-02T20:09:19  <jeremyrubin> nvm
247 2016-08-02T20:10:20  <jeremyrubin> (but in general, if someone better understands the lockfree stuff there are a bunch of low hanging fruit optimizations to investigate, although as is it's already fast enough to forget about for a while)
248 2016-08-02T20:10:39  <morcos> in any case the question there will only be whether it gets slower, as there isn't much room to get faster by more parallelism without changes.  waiting on verification is pretty minimal now.
249 2016-08-02T20:10:57  <morcos> i suppose it could help a lot on startup/reindex, where you don't have warm caches (sig or pcoinstip)
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251 2016-08-02T20:11:22  <jeremyrubin> quick q: best way to give up cpu cycles
252 2016-08-02T20:11:34  <jeremyrubin> eg, sleep(0), this_thread::yield()
253 2016-08-02T20:11:43  <sipa> jeremyrubin: i wonder about the same
254 2016-08-02T20:11:58  <gmaxwell> jeremyrubin: it's numa. with 4-way parallel memory on each of the two chips.
255 2016-08-02T20:12:21  <morcos> sipa: have you figured out what the optimal number of scriptcheck threads is for you do do a reindex is right now?
256 2016-08-02T20:12:51  <sipa> morcos: i have not; will do
257 2016-08-02T20:15:00  <sipa> morcos: how do you benchmark? use -debug=bench numbers?
258 2016-08-02T20:15:58  <morcos> sipa: yes thats what i've been doing
259 2016-08-02T20:16:23  <morcos> although for reindex, i guess the actual time elapsed is most interesting
260 2016-08-02T20:17:15  <sipa> for the graph you posted above... where do those come from?
261 2016-08-02T20:18:03  <morcos> thats using sdaftuar's simulation mode over the first 3 days of may (470 blocks)
262 2016-08-02T20:18:23  <morcos> so a bit biased by having no mempool at the beginning of that period..
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293 2016-08-02T22:49:05  <NicolasDorier> Actually, the bug I pointed out yestersday about time-too-new may really be a problem: https://www.reddit.com/r/Bitcoin/comments/4vsvvm/bitcoind_stuck_at_block_422168_timestamp_too_far/.
294 2016-08-02T22:49:05  <NicolasDorier> Having seen that independently, I tried to make a test to reproduce the bug in regnet. However I could not reproduce: If the block was rejected for time-too-new, then later rebroadcasted it worked fine and was reconsidered. I've not tried with header first propagation though
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301 2016-08-02T23:32:20  <gmaxwell> NicolasDorier: maybe if its rejected during the startup checks.
302 2016-08-02T23:32:37  <gmaxwell> e.g. set time forward, accept a block. shut down, turn time back. restart.
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306 2016-08-02T23:37:08  <sipa> NicolasDorier: i don't understand the logs there
307 2016-08-02T23:37:38  <sipa> the "CheckBlockHeader(): block timestamp too far in the future" message is something that implies a header is being received that at the time of receipt is too far in the future
308 2016-08-02T23:38:04  <sipa> while the "AcceptBlockHeader: block is marked invalid" message is about the header being marked as invalid in the database
309 2016-08-02T23:38:55  <sipa> the two should never occur together
310 2016-08-02T23:39:07  <sipa> as the first should result in us not storing the header at all
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