今天进行了InfluxDB和MySQL的读写对比测试,这里记录下结果,也方便我以后查阅。操作系统: CentOS6.5_x64
InfluxDB版本 : v1.1.0
MySQL版本:v5.1.73
CPU : Intel(R) Core(TM) i5-2320 CPU @ 3.00GHz
内存 :12G
硬盘 :SSD
一、MySQL读写测试
测试准备
初始化SQL语句:CREATE DATABASE testMysql;CREATE TABLE `monitorStatus` (`system_name` VARCHAR(20) NOT NULL,`site_name` VARCHAR(50) NOT NULL,`equipment_name` VARCHAR(50) NOT NULL,`current_value` DOUBLE NOT NULL,`timestamp` BIGINT(20) NULL DEFAULT NULL,INDEX `system_name` (`system_name`),INDEX `site_name` (`site_name`),INDEX `equipment_name` (`equipment_name`),INDEX `timestamp` (`timestamp`))ENGINE=InnoDB;单写测试代码(insertTest1.c):#include <stdlib.h>
#include<stdio.h>
#include<time.h>
#include"mysql/mysql.h"
#define N 100
int main() { MYSQL*conn_ptr;
int res;
int t,i,j;
int64_t tstamp= 1486872962;
srand(time(NULL));
t=0;
conn_ptr= mysql_init(NULL);
if (!conn_ptr)
{
printf("mysql_init failed
");
return EXIT_FAILURE;
}
conn_ptr= mysql_real_connect(conn_ptr,"localhost","root","","testMysql",0,NULL,0);
if (conn_ptr)
{
for(i=1;i<= 10000;i++)
{
mysql_query(conn_ptr,"begin");
for(j=0;j<N;j++,t++)
{
char query[1024]={0};
sprintf(query,"insert into monitorStatus values ("sys_%d","s_%d","e_%d","0.%02d","%lld");",
//j%10,(t+i)%10,(t+j)%10,(t+i+j)%100,tstamp);
j%10,(t+i)%10,(t+j)%10,rand()%100,tstamp);
//printf("query : %s
",query);
res = mysql_query(conn_ptr,query);
if (!res)
{
//printf("Inserted %lu rows
",(unsigned long)mysql_affected_rows(conn_ptr));
}
else
{
fprintf(stderr,"Insert error %d: %sn",mysql_errno(conn_ptr),mysql_error(conn_ptr));
}
if(j%10 == 0) tstamp+=1;
}
mysql_query(conn_ptr,"commit");
//printf("i=%d
",i);
}
}
else
{
printf("Connection failed
");
}
mysql_close(conn_ptr);
return EXIT_SUCCESS;
}View Code可根据情况调整测试代码中的N参数。单读测试代码(queryTest1.c):#include <stdio.h>
#include<stdlib.h>
#include"mysql/mysql.h"
int main()
{
MYSQL*conn_ptr;
MYSQL_RES*res_ptr;
MYSQL_ROW sqlrow;
MYSQL_FIELD*fd;
int res, i, j;
conn_ptr= mysql_init(NULL);
if (!conn_ptr)
{
return EXIT_FAILURE;
}
conn_ptr= mysql_real_connect(conn_ptr,"localhost","root","","testMysql", 0, NULL, 0);
if (conn_ptr)
{
res= mysql_query(conn_ptr,"select * from `monitorStatus` where system_name="sys_8" and site_name="s_9" and equipment_name="e_6" order by timestamp desc limit 10000;");
if (res)
{
printf("SELECT error:%s
",mysql_error(conn_ptr));
}
else
{
res_ptr= mysql_store_result(conn_ptr);
if(res_ptr)
{
printf("%lu Rows
",(unsigned long)mysql_num_rows(res_ptr));
j= mysql_num_fields(res_ptr);
while((sqlrow = mysql_fetch_row(res_ptr)))
{
continue;
for(i = 0; i < j; i++)
printf("%s ", sqlrow[i]);
printf("
");
}
if (mysql_errno(conn_ptr))
{
fprintf(stderr,"Retrive error:s
",mysql_error(conn_ptr));
}
}
mysql_free_result(res_ptr);
}
}
else
{
printf("Connection failed
");
}
mysql_close(conn_ptr);
return EXIT_SUCCESS;
} View CodeMakefile文件:all:gcc -g insertTest1.c -o insertTest1 -L/usr/lib64/mysql/ -lmysqlclientgcc -g queryTest1.c -o queryTest1 -L/usr/lib64/mysql/ -lmysqlclientclean:rm -rf insertTest1rm -rf queryTest1
测试数据记录
磁盘空间占用查询:使用du方式(新数据库,仅为测试):du -sh /var/lib/mysql查询特定表:use information_schema;select concat(round(sum(DATA_LENGTH/1024/1024), 2), "MB") as data from TABLES where table_schema="testMysql" and table_name="monitorStatus";测试结果:
- 100万条数据[root@localhost mysqlTest]# time ./insertTest1real1m20.645suser0m8.238ssys0m5.931s[root@localhost mysqlTest]# time ./queryTest110000 Rowsreal0m0.269suser0m0.006ssys0m0.002s 原始数据 : 28.6M
du方式 : 279MB
sql查询方式: 57.59MB
写入速度: 12398 / s
读取速度: 37174 / s - 1000万条数据root@localhost mysqlTest]# time ./insertTest1real7m15.003suser0m48.187ssys0m33.885s[root@localhost mysqlTest]# time ./queryTest110000 Rowsreal0m6.592suser0m0.005ssys0m0.002s 原始数据 : 286M
du方式 : 2.4G
sql查询方式: 572MB
写入速度: 22988 / s
读取速度: 1516 / s - 3000万条数据[root@localhost mysqlTest]# time ./insertTest1real20m38.235suser2m21.459ssys1m40.329s[root@localhost mysqlTest]# time ./queryTest110000 Rowsreal0m4.421suser0m0.004ssys0m0.004s 原始数据 : 858M
du方式 : 7.1G
sql查询方式: 1714MB
写入速度: 24228 / s
读取速度: 2261 / s
二、InfluxDB读写测试
测试准备
需要将InfluxDB的源码放入 go/src/github.com/influxdata 目录单写测试代码(write1.go):package main
import (
"log"
"time"
"fmt"
"math/rand"
"github.com/influxdata/influxdb/client/v2"
)
const (
MyDB= "testInfluxdb"
username= "root"
password= "" ) func queryDB(clnt client.Client, cmdstring) (res []client.Result, err error) {
q := client.Query{
Command: cmd,
Database: MyDB,
}
if response, err := clnt.Query(q); err == nil {
if response.Error() != nil {
return res, response.Error()
}
res= response.Results
}else {
return res, err
}
return res, nil
}
func writePoints(clnt client.Client,numint) {
sampleSize := 1 * 10000
rand.Seed(42)
t := num
bp, _ := client.NewBatchPoints(client.BatchPointsConfig{
Database: MyDB,
Precision:"us",
})
for i := 0; i < sampleSize; i++ {
t+= 1
tags := map[string]string{
"system_name": fmt.Sprintf("sys_%d",i%10),
"site_name":fmt.Sprintf("s_%d", (t+i) % 10),
"equipment_name":fmt.Sprintf("e_%d",t % 10),
}
fields := map[string]interface{}{
"value" : fmt.Sprintf("%d",rand.Int()),
}
pt, err := client.NewPoint("monitorStatus", tags, fields,time.Now())
if err != nil {
log.Fatalln("Error:", err)
}
bp.AddPoint(pt)
}
err := clnt.Write(bp)
if err != nil {
log.Fatal(err)
}
//fmt.Printf("%d task done
",num)
}
func main() {
// Make client
c, err := client.NewHTTPClient(client.HTTPConfig{
Addr:"http://localhost:8086",
Username: username,
Password: password,
})
if err != nil {
log.Fatalln("Error:", err)
}
_, err= queryDB(c, fmt.Sprintf("CREATE DATABASE %s", MyDB))
if err != nil {
log.Fatal(err)
}
i := 1
for i <= 10000 {
defer writePoints(c,i)
//fmt.Printf("i=%d
",i)
i += 1
}
//fmt.Printf("task done : i=%d
",i)
}View Code单读测试代码(query1.go): package mainimport ("log"//"time""fmt"//"math/rand""github.com/influxdata/influxdb/client/v2")const (MyDB = "testInfluxdb"username = "root"password = "")func queryDB(clnt client.Client, cmd string) (res []client.Result, err error) {q := client.Query{Command:cmd,Database: MyDB,}if response, err := clnt.Query(q); err == nil {if response.Error() != nil {return res, response.Error()}res = response.Results} else {return res, err}return res, nil}func main() {// Make clientc, err := client.NewHTTPClient(client.HTTPConfig{Addr: "http://localhost:8086",Username: username,Password: password,})if err != nil {log.Fatalln("Error: ", err)}q := fmt.Sprintf("select * from monitorStatus where system_name="sys_5" and site_name="s_1" and equipment_name="e_6" order by time desc limit 10000 ;")res, err2 := queryDB(c, q)if err2 != nil {log.Fatal(err)}count := len(res[0].Series[0].Values)log.Printf("Found a total of %v records
", count)}View Code
测试结果记录
查看整体磁盘空间占用:du -sh /var/lib/influxdb/查看最终磁盘空间占用:du -sh /var/lib/influxdb/data/testInfluxdb
- 100万条数据[root@localhost goTest2]# time ./write1real0m14.594suser0m11.475ssys0m0.251s[root@localhost goTest2]# time ./query12017/02/12 20:00:24 Found a total of 10000 recordsreal0m0.222suser0m0.052ssys0m0.009s 原始数据 : 28.6M
整体磁盘占用:27M
最终磁盘占用:21M
写入速度: 68521 / s
读取速度: 45045 / s - 1000万条数据[root@localhost goTest2]# time ./write1real2m22.520suser1m51.704ssys0m2.532s[root@localhost goTest2]# time ./query12017/02/12 20:05:16 Found a total of 10000 recordsreal0m0.221suser0m0.050ssys0m0.003s原始数据 : 286M
整体磁盘占用:214M
最终磁盘占用:189M 写入速度: 70165 / s
读取速度: 45249 / s - 3000万条数据[root@localhost goTest2]# time ./write1real7m19.121suser5m49.738ssys0m8.189s[root@localhost goTest2]# lsquery1query1.gowrite1write1.go[root@localhost goTest2]# time ./query12017/02/12 20:49:40 Found a total of 10000 recordsreal0m0.233suser0m0.050ssys0m0.012s原始数据 : 858M
整体磁盘占用:623M
最终磁盘占用:602M
写入速度: 68318 / s
读取速度: 42918 / s
三、测试结果分析
整体磁盘占用情况对比:最终磁盘占用情况对比:写入速度对比:读取速度对比:
结论:相比MySQL来说,InfluxDB在磁盘占用和数据读取方面很占优势,而且随着数据规模的扩大,查询速度没有明显的下降。
针对时序数据来说,InfluxDB有明显的优势。好,就这些了,希望对你有帮助。
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