Ivan ivanacostarubio

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

	#
	# More information about the multiple:
	# (*) https://www.theinvestorspodcast.com/bitcoin-mayer-multiple/
	# (*) http://www.bitcoin.kn/
	#

	2009-01-04
	2009-01-05
	2009-01-06
	2009-01-07

	lnd: 2018-01-14 12:17:06.635 [WRN] LTND: open ../lnd.conf: no such file or directory 2018-01-14 12:17:06.636 [INF] LTND: Version 0.3.0-alpha
	lnd: 2018-01-14 12:17:06.636 [INF] CHDB: Checking for schema update: latest_version=0, db_version=0
	lnd: 2018-01-14 12:17:06.638 [INF] LTND: Primary chain is set to: bitcoin
	lnd: 2018-01-14 12:17:06.658 [INF] BTCN: Loaded 1053 addresses from file '/Users/ivan/Library/Application Support/Lnd/data/testnet3/bitcoin/peers.json'
	lnd: 2018-01-14 12:17:06.667 [INF] CMGR: DNS discovery failed on seed x49.seed.tbtc.petertodd.org: lookup x49.seed.tbtc.petertodd.org: no such host 2018-01-14 12:17:06.667 [INF] CMGR: DNS discovery failed on seed x49.testnet-seed.bitcoin.jonasschnelli.ch: lookup x49.testnet-seed.bitcoin.jonasschnelli.ch: no such host
	lnd: 2018-01-14 12:17:06.757 [INF] CMGR: 3 addresses found from DNS seed testnet-seed.bluematt.me
	lnd: 2018-01-14 12:17:06.903 [INF] BTCN: New valid peer 165.227.7.29:18333 (outbound) (/btcwire:0.5.0/btcd:0.12.0/) 2018-01-14 12:17:06.903

	OCAMLOPT (node.cmxa) RPC_server.cmx
	findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/vagrant/.opam/tezos/lib/ocaml/compiler-libs, /home/vagrant/.opam/tezos/lib/ocaml
	OCAMLOPT (node.cmxa) fitness.cmx
	findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/vagrant/.opam/tezos/lib/ocaml/compiler-libs, /home/vagrant/.opam/tezos/lib/ocaml
	OCAMLOPT (node.cmxa) raw_store.cmi
	findlib: [WARNING] Interface topdirs.cmi occurs in several directories: /home/vagrant/.opam/tezos/lib/ocaml/compiler-libs, /home/vagrant/.opam/tezos/lib/ocaml
	File "node/db/raw_store.mli", line 10, characters 5-15:
	Error: Unbound module Store_sigs
	Makefile:309: recipe for target 'node/db/raw_store.cmi' failed
	make[1]: *** [node/db/raw_store.cmi] Error 2

	### stderr ###
	# [...]
	# Warning 3: deprecated: [@@noalloc] should be used instead of "noalloc"
	# /usr/lib/gcc/x86_64-alpine-linux-musl/5.3.0/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lsnappy
	# /usr/lib/gcc/x86_64-alpine-linux-musl/5.3.0/../../../../x86_64-alpine-linux-musl/bin/ld: cannot find -lsnappy
	# collect2: error: ld returned 1 exit status
	# *** omake: targets were not rebuilt because of errors:
	# src/dllcamlleveldb.so
	# src/leveldb.a
	# src/leveldb.cma

	==> default: =-=- lwt.3.0.0 installed successfully -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
	==> default: => Lwt 3.0.0 made some minor breaking changes, announced in 2.7.0. See
	==> default: https://github.com/ocsigen/lwt/issues/308
	==> default:
	==> default: =-=- conf-leveldb.1 troobleshooting -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
	==> default: => This package relies on external (system) dependencies that may be missing.
	==> default: `opam depext conf-leveldb.1' may help you find the correct installation for
	==> default: your system.
	==> default:
	==> default: The former state can be restored with:

	- # app/views/comments/_comment.html.slim

	li data-controller="comment" data-action="click->comment#hello"
	= "#{comment.message} by #{comment.user.email}"

	#!/bin/bash
	cat /path/to/public_key \| ssh root@yourdokkuinstance "sudo sshcommand acl-add dokku [description]"

	Our whole team is following [this course](http://courses.knowthen.com/courses/elm-for-beginners) on ELM and
	we've been holding weekly Google Hangouts sessions to go over the material. If you want to follow along and join some of the sessions, follow us on [Twitter](https://twitter.com/softcriollo).


	<iframe width="560" height="315" src="https://www.youtube.com/embed/FWXFbp0yH7o" frameborder="0" allowfullscreen></iframe>

	We are talking in Spanish so be aware 🇻🇪