hslx0的博客

内存和磁盘写入速度测试

应用工程里，经常会遇到存储一些数据，存储下来进行分析#include <iostream>#include <fstream>using namespace std;std::string CSV_PATH = "./data.csv";ofstream csv;int frame_num = 0;struct Name{ int age; float height; float weight; int score;};in

获取本地时间戳信息time_t Get_Timestamp(int accuracy = 1) //0:s,1:ms,2:us,3:ns{struct timespec tv;clock_gettime(CLOCK_REALTIME, &tv);switch (accuracy){case 0:return tv.tv_sec;case 1:return tv.tv_sec * 1000 + tv.tv_nsec / 1000000;case 2:return tv.tv_s

sudo env LD_LIBRARY_PATH=/mnt/d/lib_extern/ ./bin

sudo apt install libboost-system-dev依赖：sudo apt-get install libboost-all-dev

time_t Get_TimeStamp(int accuracy){ struct timespec tv; clock_gettime(CLOCK_REALTIME, &tv); switch (accuracy) { case 0: return tv.tv_sec; case 1: return tv.tv_sec*1000 + tv.tv_nsec/1000000; case 2: r

json打印样例：printf(“j file content:%s\n”, j.dump().c_str());

ROS相关整理文档：rosbag信息查询：rosbag info xxx.bagpath: xxx.bagversion: 2.0duration: 53.4sstart: Apr 16 2021 16:01:47.50 (1618560107.50)end: Apr 16 2021 16:02:40.86 (1618560160.86)size: 1.4 GBmessages: 807compression:

Windows下编辑的文件，在ubuntu下结尾显示^M可以用如下方法解决：ln -s /usr/bin/todos /usr/bin/unix2dosln -s /usr/bin/fromdos /usr/bin/dos2unix或者在 ~/.bashrc里起个别名vi ~/.bashrc添加 alias unix2dos=todos alias dos2unix=fromdos...

sudo apt-get install ethtool net-toolssudo ethtool -s eth0 autoneg off //需要关闭，不然会自动连接sudo ethtool -s eth0 speed 10 duplex halfsudo service networking restartsudo ethtool -s eth0 speed 10 duplex half autoneg on

C++程序运行时间统计：头文件包含：#include <chrono>using namespace std::chrono内容：system_clock::time_point now = system_clock::now();your code here:system_clock::time_point end = system_clock::now();double dt = duration_cast<duration<double>>(end