libera #monero-pow

17 Nov 2021

Monero's Proof of Work algorithm (RandomX) and related topics. Use #p2pool-log and #p2pool-mini for P2Pool discussions. Anti-spam active: PM hyc for voice.

• 00:18
  garth
  How soon until p2p is the biggest miner?
• 00:20
  nioc
  garth: p2pool general chat can be found at #p2pool-log
• 03:57
  crypto_grampy[m]
  <nioc> "garth: p2pool general chat can..." <- Is that room bridged to matrix?
• 03:58
  nioc
  there are matrix people there
• 04:08
  crypto_grampy[m]
  Seth For Privacy do you mind adding p2pool-log to the monero space directory?
• 07:02
  DataHoarder
  afaik bridged via libera chat matrix bridge
• 13:05
  sethsimmons
  <crypto_grampy[m]> "Seth For Privacy do you mind..." <- Will do.
• 13:07
  sethsimmons
  Added bounties and ux as well.
• 16:02
  garth
  nioc: I actually don’t care enough about the answer to join another channel haha. Just a fun thought I had
• 16:04
  nioc
  soon
• 22:27
  pauliouk
  paste.debian.net/1219884
• 22:28
  pauliouk
  monerod decided to segfault on me after months of smooth running
• 22:29
  pauliouk
  Linux host4 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u1 (2019-07-19) x86_64 GNU/Linux plenty of memory, storage and CPU available to it
• 22:31
  wfaressuissia
  do you have stack trace for segfault ?
• 22:32
  wfaressuissia
  you've just pasted monerod log with some caught exception
• 22:33
  pauliouk
  no stacktrace, wasn't expecting it to fault out
• 22:33
  wfaressuissia
  journalctl / dmesg ?
• 22:33
  wfaressuissia
  if it's really segfault then there should be something
• 22:37
  pauliouk
  paste.debian.net/1219886
• 22:38
  pauliouk
  damn UFW is noisy in the logs
• 22:40
  wfaressuissia
  "... error 7 in monerod[55" you've stripped postfix
• 22:40
  wfaressuissia
  there should be `monerod[digits...]`
• 22:40
  wfaressuissia
  * be `monerod[hex digits...]`
• 22:42
  pauliouk
  my bad, screen cut it off: monerod[55b80704d000+b8b000]
• 22:44
  wfaressuissia
  "github.com/SChernykh/p2pool/releases/tag/v1.3.1" which binary did you use ? It was certainly not this one
• 22:45
  pauliouk
  built from source, Monero 'Oxygen Orion' (v0.17.2.3-97b7a41bf)
• 22:52
  wfaressuissia
  can you upload exactly that executable to somewhere ?
• 22:53
  pauliouk
  yeah 2 secs
• 22:54
  pauliouk
  p2pool.uk/monerod
• 23:27
  wfaressuissia
  "github.com/zeromq/libzmq/blob/master/src/xpub.cpp#L99", "zmq::xpub_t::xread_activated" it's within this function
• 23:27
  wfaressuissia
  "github.com/zeromq/libzmq/search?q=z…_t%3A%3Axread_activated&type=issues", "zeromq/libzmq #3940" this report with segfault and 0xffffffffff... address looks similar and it was present in 4.3.1 zmq version
• 23:28
  wfaressuissia
  there is even reproduction code
• 23:28
  pauliouk
  well fek. libzmq out of date?
• 23:29
  pauliouk
  guessing apt wont be up to date, I'll build from src
• 23:29
  wfaressuissia
  "monero-project/monero 1d451a6" you need latest release-v0.17 branch with updated zeromq to 4.3.4
• 23:29
  wfaressuissia
  ^ that's for build with depends
• 23:30
  pauliouk
  will I get away with just grabbing the latest git?
• 23:31
  wfaressuissia
  If you're building monerod with `make depends` or smth similar, then yes
• 23:31
  wfaressuissia
  otherwise check what version of zmq is being used in your env
• 23:34
  pauliouk
  libczmq-dev/oldstable 4.2.0-2 amd64 will be the one that I grabbed from apt
• 23:34
  wfaressuissia
  it's probably obvious that 4.2.0 < 4.3.1
• 23:35
  pauliouk
  ever so slightly yup
• 23:36
  pauliouk
  thanks for looking into that one. in fairness that VPS is well overdue a distupgrade