Benchmark

.formatter.exs

@@ -3,7 +3,7 @@
     ".credo.exs",
     ".formatter.exs",
     "apps/*/mix.exs",
-    "apps/*/{config,lib,priv,test}/**/*.{ex,exs}",
+    "apps/*/{benchmarks,config,lib,priv,test}/**/*.{ex,exs}",
     "mix.exs",
     "{config}/**/*.{ex,exs}"
   ],

apps/explorer/README.md

@@ -33,3 +33,10 @@ To get POA Explorer up and running locally:
   * Lint the Elixir code: `$ mix credo --strict`
   * Run the dialyzer: `mix dialyzer --halt-exit-status`
   * Check the Elixir code for vulnerabilities: `$ mix sobelow --config`
+
+### Benchmarking
+
+#### `Explorer.Chain.recent_collated_transactions/0`
+
+* Reset the test database: `MIX_ENV=test mix do ecto.drop, ecto.create, ecto.migrate`
+* Run the benchmark: `MIX_ENV=test mix run benchmarks/explorer/chain/recent_collated_transactions.exs`

apps/explorer/benchmarks/explorer/chain/recent_collated_transactions.exs

@@ -0,0 +1,60 @@
+path = "benchmarks/explorer/chain/recent_collated_transactions.benchee"
+
+import Explorer.Factory
+
+alias Explorer.{Chain, Repo}
+alias Explorer.Chain.Block
+
+Benchee.run(
+  %{
+    "Explorer.Chain.recent_collated_transactions" => fn _ ->
+      Chain.recent_collated_transactions()
+    end
+  },
+  inputs: %{
+    "   0 blocks   0 transactions per block" => %{block_count: 0, transaction_count_per_block: 0},
+    "  10 blocks   0 transactions per block" => %{block_count: 10, transaction_count_per_block: 0},
+    "  10 blocks   1 transaction per block" => %{block_count: 10, transaction_count_per_block: 1},
+    "  10 blocks  10 transactions per blocks" => %{block_count: 10, transaction_count_per_block: 10},
+    "  10 blocks 100 transactions per blocks" => %{block_count: 10, transaction_count_per_block: 100},
+    "  10 blocks 250 transactions per blocks" => %{block_count: 10, transaction_count_per_block: 250},
+    " 100 blocks   0 transactions per block" => %{block_count: 100, transaction_count_per_block: 0},
+    " 100 blocks   1 transaction per block" => %{block_count: 100, transaction_count_per_block: 1},
+    " 100 blocks  10 transactions per blocks" => %{block_count: 100, transaction_count_per_block: 10},
+    " 100 blocks 100 transactions per blocks" => %{block_count: 100, transaction_count_per_block: 100},
+    " 100 blocks 250 transactions per blocks" => %{block_count: 100, transaction_count_per_block: 250},
+    "1000 blocks   0 transactions per block" => %{block_count: 1000, transaction_count_per_block: 0},
+    "1000 blocks   1 transaction per block" => %{block_count: 1000, transaction_count_per_block: 1},
+    "1000 blocks  10 transactions per blocks" => %{block_count: 1000, transaction_count_per_block: 10},
+    "1000 blocks 100 transactions per blocks" => %{block_count: 1000, transaction_count_per_block: 100}
+  },
+  before_scenario: fn %{block_count: block_count, transaction_count_per_block: transaction_count_per_block} = input ->
+    :ok = Ecto.Adapters.SQL.Sandbox.checkout(Repo, ownership_timeout: :infinity)
+
+    # ensure database is clean from failed runs
+    0 = Repo.aggregate(Block, :count, :hash)
+
+    block_count
+    |> insert_list(:block)
+    |> Enum.each(fn block ->
+      transaction_count_per_block
+      |> insert_list(:transaction)
+      |> Enum.each(fn transaction ->
+        transaction
+        |> with_block(block)
+        |> with_receipt()
+      end)
+    end)
+
+    input
+  end,
+  formatter_options: %{
+    console: %{extended_statistics: true}
+  },
+  load: path,
+  save: [
+    path: path,
+    tag: "separate-receipts"
+  ],
+  time: 10
+)

apps/explorer/mix.exs

@@ -62,6 +62,10 @@ defmodule Explorer.Mixfile do
   # Type `mix help deps` for examples and options.
   defp deps do
     [
+      # benchmark optimizations
+      {:benchee, "~> 0.13.1", only: :test},
+      # CSV output for benchee
+      {:benchee_csv, "~> 0.8.0", only: :test},
       {:bypass, "~> 0.8", only: :test},
       {:credo, "0.9.2", only: [:dev, :test], runtime: false},
       {:crontab, "~> 1.1"},

apps/explorer/test/support/factory.ex

@@ -1,6 +1,11 @@
 defmodule Explorer.Factory do
   use ExMachina.Ecto, repo: Explorer.Repo
 
+  require Ecto.Query
+
+  import Ecto.Query
+  import Kernel, except: [+: 2]
+
   alias Explorer.Chain.Block.{Range, Reward}
 
   alias Explorer.Chain.{
@@ -126,8 +131,8 @@ defmodule Explorer.Factory do
   def block_reward_factory do
     # Generate ranges like 1 - 10,000; 10,001 - 20,000, 20,001 - 30,000; etc
     x = sequence("block_range", & &1)
-    lower = x * 10_000 + 1
+    lower = x * Kernel.+(10_000, 1)
-    upper = lower + 9_999
+    upper = Kernel.+(lower, 9_999)
 
     wei_per_ether = Decimal.new(1_000_000_000_000_000_000)
 
@@ -205,6 +210,45 @@ defmodule Explorer.Factory do
     Repo.preload(block_transaction, [:block, :receipt])
   end
 
+  def with_block(%Transaction{index: nil} = transaction, %Block{hash: block_hash}) do
+    next_transaction_index = block_hash_to_next_transaction_index(block_hash)
+
+    transaction
+    |> Transaction.changeset(%{block_hash: block_hash, index: next_transaction_index})
+    |> Repo.update!()
+    |> Repo.preload(:block)
+  end
+
+  def with_receipt(%Transaction{hash: hash, index: index} = transaction) do
+    insert(:receipt, transaction_hash: hash, transaction_index: index)
+
+    Repo.preload(transaction, :receipt)
+  end
+
+  defmacrop left + right do
+    quote do
+      fragment("? + ?", unquote(left), unquote(right))
+    end
+  end
+
+  defmacrop coalesce(left, right) do
+    quote do
+      fragment("coalesce(?, ?)", unquote(left), unquote(right))
+    end
+  end
+
+  defp block_hash_to_next_transaction_index(block_hash) do
+    import Kernel, except: [+: 2]
+
+    Repo.one!(
+      from(
+        transaction in Transaction,
+        select: coalesce(max(transaction.index), -1) + 1,
+        where: transaction.block_hash == ^block_hash
+      )
+    )
+  end
+
   defp internal_transaction_factory(:call = type) do
     gas = Enum.random(21_000..100_000)
     gas_used = Enum.random(0..gas)

apps/explorer_web/test/explorer_web/controllers/address_transaction_controller_test.exs

@@ -2,7 +2,6 @@ defmodule ExplorerWeb.AddressTransactionControllerTest do
   use ExplorerWeb.ConnCase
 
   import ExplorerWeb.Router.Helpers, only: [address_transaction_path: 4]
-  import ExplorerWeb.Factory
 
   alias Explorer.ExchangeRates.Token
 

apps/explorer_web/test/support/conn_case.ex

@@ -25,7 +25,6 @@ defmodule ExplorerWeb.ConnCase do
       @endpoint ExplorerWeb.Endpoint
 
       import Explorer.Factory
-      import ExplorerWeb.Factory
     end
   end
 

apps/explorer_web/test/support/factory.ex

@@ -1,36 +0,0 @@
-defmodule ExplorerWeb.Factory do
-  import Ecto.Query
-  import Explorer.Factory
-
-  alias Explorer.Chain.{Block, Transaction}
-  alias Explorer.Repo
-
-  def with_block(%Transaction{index: nil} = transaction, %Block{hash: block_hash}) do
-    next_transaction_index = block_hash_to_next_transaction_index(block_hash)
-
-    transaction
-    |> Transaction.changeset(%{block_hash: block_hash, index: next_transaction_index})
-    |> Repo.update!()
-    |> Repo.preload(:block)
-  end
-
-  def with_receipt(%Transaction{hash: hash, index: index} = transaction) do
-    insert(:receipt, transaction_hash: hash, transaction_index: index)
-
-    Repo.preload(transaction, :receipt)
-  end
-
-  defp block_hash_to_next_transaction_index(block_hash) do
-    query =
-      from(
-        transaction in Transaction,
-        select: transaction.index,
-        where: transaction.block_hash == ^block_hash
-      )
-
-    case Repo.one(query) do
-      nil -> 0
-      index -> index + 1
-    end
-  end
-end

apps/explorer_web/test/support/feature_case.ex

@@ -12,7 +12,6 @@ defmodule ExplorerWeb.FeatureCase do
       import Ecto.Changeset
       import Ecto.Query
       import Explorer.Factory
-      import ExplorerWeb.Factory
       import ExplorerWeb.Router.Helpers
 
       alias Explorer.Repo

coveralls.json

@@ -1,7 +1,7 @@
 {
   "coverage_options": {
     "treat_no_relevant_lines_as_covered": true,
-    "minimum_coverage": 91.9
+    "minimum_coverage": 92.3
   },
   "terminal_options": {
     "file_column_width": 120

mix.lock

@@ -1,5 +1,7 @@
 %{
   "abnf2": {:hex, :abnf2, "0.1.2", "6f8792b8ac3288dba5fc889c2bceae9fe78f74e1a7b36bea9726ffaa9d7bef95", [:mix], [], "hexpm"},
+  "benchee": {:hex, :benchee, "0.13.1", "bd93ca05be78bcb6159c7176230efeda2f724f7ffd485515175ca411dff4893e", [:mix], [{:deep_merge, "~> 0.1", [hex: :deep_merge, repo: "hexpm", optional: false]}], "hexpm"},
+  "benchee_csv": {:hex, :benchee_csv, "0.8.0", "0ca094677d6e2b2f601b7ee7864b754789ef9d24d079432e5e3d6f4fb83a4d80", [:mix], [{:benchee, "~> 0.12", [hex: :benchee, repo: "hexpm", optional: false]}, {:csv, "~> 2.0", [hex: :csv, repo: "hexpm", optional: false]}], "hexpm"},
   "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
   "bypass": {:hex, :bypass, "0.8.1", "16d409e05530ece4a72fabcf021a3e5c7e15dcc77f911423196a0c551f2a15ca", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "certifi": {:hex, :certifi, "2.3.1", "d0f424232390bf47d82da8478022301c561cf6445b5b5fb6a84d49a9e76d2639", [:rebar3], [{:parse_trans, "3.2.0", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm"},
@@ -9,8 +11,10 @@
   "cowlib": {:hex, :cowlib, "1.0.2", "9d769a1d062c9c3ac753096f868ca121e2730b9a377de23dec0f7e08b1df84ee", [:make], [], "hexpm"},
   "credo": {:hex, :credo, "0.9.2", "841d316612f568beb22ba310d816353dddf31c2d94aa488ae5a27bb53760d0bf", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:poison, ">= 0.0.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
   "crontab": {:hex, :crontab, "1.1.2", "4784a50987b4a19af07a908f98e8a308b00f9c93efc5a7892155dc10cd8fc7d9", [:mix], [{:ecto, "~> 1.0 or ~> 2.0 or ~> 2.1", [hex: :ecto, repo: "hexpm", optional: true]}], "hexpm"},
+  "csv": {:hex, :csv, "2.1.1", "a4c1a7c30d2151b6e4976cb2f52c0a1d49ec965afb737ed84a684bc4284d1627", [:mix], [{:parallel_stream, "~> 1.0.4", [hex: :parallel_stream, repo: "hexpm", optional: false]}], "hexpm"},
   "db_connection": {:hex, :db_connection, "1.1.3", "89b30ca1ef0a3b469b1c779579590688561d586694a3ce8792985d4d7e575a61", [:mix], [{:connection, "~> 1.0.2", [hex: :connection, repo: "hexpm", optional: false]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
   "decimal": {:hex, :decimal, "1.5.0", "b0433a36d0e2430e3d50291b1c65f53c37d56f83665b43d79963684865beab68", [:mix], [], "hexpm"},
+  "deep_merge": {:hex, :deep_merge, "0.1.1", "c27866a7524a337b6a039eeb8dd4f17d458fd40fbbcb8c54661b71a22fffe846", [:mix], [], "hexpm"},
   "dialyxir": {:hex, :dialyxir, "0.5.1", "b331b091720fd93e878137add264bac4f644e1ddae07a70bf7062c7862c4b952", [:mix], [], "hexpm"},
   "earmark": {:hex, :earmark, "1.2.5", "4d21980d5d2862a2e13ec3c49ad9ad783ffc7ca5769cf6ff891a4553fbaae761", [:mix], [], "hexpm"},
   "ecto": {:hex, :ecto, "2.2.8", "a4463c0928b970f2cee722cd29aaac154e866a15882c5737e0038bbfcf03ec2c", [:mix], [{:db_connection, "~> 1.1", [hex: :db_connection, repo: "hexpm", optional: true]}, {:decimal, "~> 1.2", [hex: :decimal, repo: "hexpm", optional: false]}, {:mariaex, "~> 0.8.0", [hex: :mariaex, repo: "hexpm", optional: true]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: true]}, {:poolboy, "~> 1.5", [hex: :poolboy, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13.0", [hex: :postgrex, repo: "hexpm", optional: true]}, {:sbroker, "~> 1.0", [hex: :sbroker, repo: "hexpm", optional: true]}], "hexpm"},
@@ -43,6 +47,7 @@
   "mochiweb": {:hex, :mochiweb, "2.15.0", "e1daac474df07651e5d17cc1e642c4069c7850dc4508d3db7263a0651330aacc", [:rebar3], [], "hexpm"},
   "mock": {:hex, :mock, "0.3.1", "994f00150f79a0ea50dc9d86134cd9ebd0d177ad60bd04d1e46336cdfdb98ff9", [:mix], [{:meck, "~> 0.8.8", [hex: :meck, repo: "hexpm", optional: false]}], "hexpm"},
   "mox": {:hex, :mox, "0.3.2", "3b9b8364fd4f28628139de701d97c636b27a8f925f57a8d5a1b85fbd620dad3a", [:mix], [], "hexpm"},
+  "parallel_stream": {:hex, :parallel_stream, "1.0.6", "b967be2b23f0f6787fab7ed681b4c45a215a81481fb62b01a5b750fa8f30f76c", [:mix], [], "hexpm"},
   "parse_trans": {:hex, :parse_trans, "3.2.0", "2adfa4daf80c14dc36f522cf190eb5c4ee3e28008fc6394397c16f62a26258c2", [:rebar3], [], "hexpm"},
   "phoenix": {:hex, :phoenix, "1.3.0", "1c01124caa1b4a7af46f2050ff11b267baa3edb441b45dbf243e979cd4c5891b", [:mix], [{:cowboy, "~> 1.0", [hex: :cowboy, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 1.0", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: false]}, {:poison, "~> 2.2 or ~> 3.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "3.3.0", "702f6e164512853d29f9d20763493f2b3bcfcb44f118af2bc37bb95d0801b480", [:mix], [{:ecto, "~> 2.1", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},