Benchmark: Jump vs switch case v2

Script Preparation code:

// Switch
function thing(j)
{
  switch(j)
  {
    case 0:
      return "rah";
    case 1:
      return "lah";
    case 2:
      return "sah";
    case 3:
      return "blah";
  }
}

// Jumptable
function rah()
{
  return "rah";
}

function lah()
{
  return "lah";
}

function sah()
{
  return "sah";
}

function blah()
{
  return "blah";
}

var jumpTable = [rah, lah, sah, blah];

// Arrow functions
var jumpTableArrow = [() => "rah", () => "lah", () => "sah", () => "blah"]

// Map
var jumpTableMap = new Map(jumpTableArrow.map((fun, i) => [i, fun]))

Tests:

switch case
for(let i = 0; i < 100000; i++) { for(let j = 0; thing(j) != "blah"; j++) { } }
jump table
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTable[j]() != "blah"; j++) { } }
jump table (arrow functions)
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTableArrow[j]() != "blah"; j++) { } }
jump table (Map)
for(let i = 0; i < 100000; i++) { for(let j = 0; jumpTableMap.get(j)() != "blah"; j++) { } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
switch case
jump table
jump table (arrow functions)
jump table (Map)

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 6 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser/OS: Chrome 118 on Windows

View result in a separate tab

Test name	Executions per second
switch case	39.8 Ops/sec
jump table	32.5 Ops/sec
jump table (arrow functions)	32.5 Ops/sec
jump table (Map)	29.7 Ops/sec

Jump vs switch case v2 (version: 0)

Updated to separate function creation from test. Also added in alternatives for arrow functions and Map

Comparing performance of: switch case vs jump table vs jump table (arrow functions) vs jump table (Map)

Created: 5 years ago by: Guest

Jump to the latest result

switch case

jump table

jump table (arrow functions)

jump table (Map)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A