Kelly Sommers kellabyte

Go 1.2 JSON Serialization

This test is run on Azure so it is more comparable to the EC2 results on Techempower from here:
http://www.techempower.com/benchmarks/#section=data-r8&hw=ec2&test=json

Running 15s test @ http://server:8000/json
  8 threads and 8 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     2.99ms    5.74ms  24.37ms   87.76%

Req/Sec 0.86k 448.25 2.00k 69.91%

OSX i7-3720QM CPU @ 2.60GHz go1.2 darwin/amd64

Performance doesn't increase with GOMAXPROCS it gets worse on OSX!

GOMAXPROCS=1
./websocket_client 1 100000
Sent 400000 in 2.389414969s for a rate of 167404/second

GOMAXPROCS=2
./websocket_client 2 100000

Sent 400000 in 6.219798526s for a rate of 64310/second <-- Lost 100K msgs/second!

Index using 31.1 bits per integer
Index decoded integers at 775,401,965/sec in 645ms
Compressed bitmap sets at 680,639,707/sec in 735ms
Compressed bitmap using 536,558,060 bytes for 471,997,769 bits set
471,997,769 actual records

Index using 31.1 bits per integer
Index decoded integers at 569,875,343/sec in 877ms
Compressed bitmap sets at 814,863,270/sec in 614ms
Compressed bitmap using 536,558,364 bytes for 472,003,763 bits set

New code results

for i in {1..6}; do ./wrk -d10s -t24 -c24 --latency --pipeline 512 http://server:8000; done
Running 10s test @ http://server:8000
  24 threads and 24 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    27.11ms   20.35ms 285.64ms   85.02%

Req/Sec 25.04k 11.73k 74.74k 63.48%

	package main

	import (
	"github.com/alecthomas/gozmq"
	"fmt"
	)

	type ClientAgent interface {
	ListenAndServe()
	Close()

	dstat -tcmrd --disk-util -ny --output metrics.csv

	"system","total cpu usage",,,,,,"memory usage",,,,"io/total",,"dsk/total",,"sda","sdb","sdc","net/total",,"system",
	"date/time","usr","sys","idl","wai","hiq","siq","used","buff","cach","free","read","writ","read","writ","util","util","util","recv","send","int","csw"
	13-11 15:39:48,14.670,0.850,51.739,32.718,0.0,0.022,5024739328.0,21512192.0,11012661248.0,804286464.0,152.400,3.885,13525800.545,36477.273,2.973,60.063,0.008,0.0,0.0,659.300,621.473
	13-11 15:39:49,0.0,0.0,100.0,0.0,0.0,0.0,5024735232.0,21512192.0,11012665344.0,804286464.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1194.0,2830.0,162.0,239.0
	13-11 15:39:50,0.500,0.0,99.500,0.0,0.0,0.0,5024735232.0,21512192.0,11012665344.0,804286464.0,0.0,6.0,0.0,24576.0,0.0,0.0,0.0,864.0,1530.0,145.0,228.0
	13-11 15:39:51,0.500,0.0,99.500,0.0,0.0,0.0,5024735232.0,21512192.0,11012665344.0,804286464.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,760.0,1513.0,151.0,218.0

	runtime.mach_semaphore_wait()
	/usr/local/go/src/pkg/runtime/sys_darwin_amd64.s:395 +0xb
	runtime.semasleep(0xffffffffffffffff)
	/usr/local/go/src/pkg/runtime/os_darwin.c:414 +0xa1
	runtime.notesleep(0x4697130)
	/usr/local/go/src/pkg/runtime/lock_sema.c:164 +0xc7
	stopm()
	/usr/local/go/src/pkg/runtime/proc.c:927 +0xe1
	findrunnable()
	/usr/local/go/src/pkg/runtime/proc.c:1232 +0x42d

	{
	"type": "tx",
	"ops": [
	{
	"op": "set",
	"ks": "users",
	"k": "1234",
	"v": "asmith"
	},
	{

	package libdazzle

	import (
	"fmt"
	"net/http"
	"strconv"
	"time"
	)

	type HttpServer struct {

	package dazzle

	import (
	"fmt"
	)

	func main() {
	fmt.Println("Hello world")
	}