influxdb并发查询性能 InfluxDB和MySQL的读写速度及磁盘占用对比测试

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

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\n"); 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.d','%lld');", //j,(t i),(t j),(t i j)0,tstamp); j,(t i),(t j),rand()0,tstamp); //printf("query : %s\n",query); res = mysql_query(conn_ptr,query); if (!res) { //printf("Inserted %lu rows\n",(unsigned long)mysql_affected_rows(conn_ptr)); } else { fprintf(stderr, "Insert error %d: %sn",mysql_errno(conn_ptr),mysql_error(conn_ptr)); } if(j == 0) tstamp =1; } mysql_query(conn_ptr,"commit"); //printf("i=%d\n",i); } } else { printf("Connection failed\n"); } mysql_close(conn_ptr); return EXIT_SUCCESS; }

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\n",mysql_error(conn_ptr)); } else { res_ptr = mysql_store_result(conn_ptr); if(res_ptr) { printf("%lu Rows\n",(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\t", sqlrow[i]); printf("\n"); } if (mysql_errno(conn_ptr)) { fprintf(stderr,"Retrive error:s\n",mysql_error(conn_ptr)); } } mysql_free_result(res_ptr); } } else { printf("Connection failed\n"); } mysql_close(conn_ptr); return EXIT_SUCCESS; }

Makefile文件：

all: gcc -g insertTest1.c -o insertTest1 -L/usr/lib64/mysql/ -lmysqlclient gcc -g queryTest1.c -o queryTest1 -L/usr/lib64/mysql/ -lmysqlclient clean: rm -rf insertTest1 rm -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 ./insertTest1 real 1m20.645s user 0m8.238s sys 0m5.931s [root@localhost mysqlTest]# time ./queryTest1 10000 Rows real 0m0.269s user 0m0.006s sys 0m0.002s

原始数据 : 28.6Mdu方式 : 279MBsql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 ./insertTest1 real 7m15.003s user 0m48.187s sys 0m33.885s [root@localhost mysqlTest]# time ./queryTest1 10000 Rows real 0m6.592s user 0m0.005s sys 0m0.002s

原始数据 : 286Mdu方式 : 2.4Gsql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 ./insertTest1 real 20m38.235s user 2m21.459s sys 1m40.329s [root@localhost mysqlTest]# time ./queryTest1 10000 Rows real 0m4.421s user 0m0.004s sys 0m0.004s

原始数据 : 858Mdu方式 : 7.1Gsql查询方式： 1714MB写入速度： 24228 / s 读取速度： 2261 / s

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, 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 writePoints(clnt client.Client,num int) { 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), "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\n",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\n",i) i = 1 } //fmt.Printf("task done : i=%d \n",i) }

单读测试代码（query1.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, 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 client c, 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\n", count) }

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 ./write1 real 0m14.594s user 0m11.475s sys 0m0.251s [root@localhost goTest2]# time ./query1 2017/02/12 20:00:24 Found a total of 10000 records real 0m0.222s user 0m0.052s sys 0m0.009s

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 ./write1 real 2m22.520s user 1m51.704s sys 0m2.532s [root@localhost goTest2]# time ./query1 2017/02/12 20:05:16 Found a total of 10000 records real 0m0.221s user 0m0.050s sys 0m0.003s

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 ./write1 real 7m19.121s user 5m49.738s sys 0m8.189s
• [root@localhost goTest2]# ls query1 query1.go write1 write1.go
• [root@localhost goTest2]# time ./query1 2017/02/12 20:49:40 Found a total of 10000 records real 0m0.233s user 0m0.050s sys 0m0.012s

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

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。