snail007

package main

import "reflect"
import "fmt"

type User struct {
	Name string
}

func main() {

preytaren

# -*- encoding= utf-8
“”“

“””
import os
import sys
import re
import shutil
import time
from collections import defaultdict

klb3713

# -*- coding: utf-8 -*-
__author__ = 'klb3713'

import threading, time, httplib
HOST = "127.0.0.1"; #主机地址 例如192.168.1.101
PORT = 8001 #端口
URI = "/api/huohuaId2Url" #相对地址,加参数防止缓存，否则可能会返回304
TOTAL = 0 #总数
SUCC = 0 #响应成功数
FAIL = 0 #响应失败数

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD