青铜提问1/100:如何用emacs搭建c++开发环境?

学习别人的思路:

小马过河:

  • todo1

    1. 我应一开始就照抄 世界级大师 Steve Purcell 的 Emacs 配置.

    2. 安心用 Steve PurcellEmacs 配置 , 从此走上正轨.

    3. 初学者开始阶段应以模仿为主. 这点是本文核心思想.

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 sudo dnf install emacs
 
 emacs --version
 GNU Emacs 26.1 //版本不是最新版本

依赖:
yum install gnutls  gnutls-devel
yum install ncurses-devel


wget https://ftp.gnu.org/gnu/emacs/emacs-28.2.tar.gz

 https://github.com/watchpoints/emacs.d/tree/master
 git clone https://github.com/purcell/emacs.d.git ~/.emacs.d
 
//sed -i 's/https/http/g' ~/.emacs.d/lisp/init-elpa.el
//linux命令行代理神器-proxychains
emacs --debug-init

基本用法

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perf record -a -e kmem:kmalloc --filter 'bytes_alloc == 192' -e kmem:kfree --filter ' ptr != 0' sleep 200
  • Perftools-Specific Install Notes
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https://github.com/gperftools/gperftools/blob/master/INSTALL

yum install libunwind(否者heap profiler产生的数据文件都会是空的)

if you use a 64-bit system, we strongly recommend you
install libunwind before trying to configure or install gperftools.

yum install autoconf automake libtool

git clone https://github.com/gperftools/gperftools
sh autogen.sh
./configure 

问题 cpu 高怎么解决

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perf record  -F 99  -g -a  -p 3830098 -- sleep 20
perf report --stdio
perf record  -F 99  -g -e "kmem:*"  -- sleep 20

青铜提问1:

用perf report –stdio 跟踪看不到是地址,不是函数,如何根据 地址确定符号? python3调用了mpirun库

https://maimai.cn/web/gossip_detail?gid=31502447&egid=0d093d48911649ddae82276eadffbb9e&encode_id=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJlZ2lkIjoiMGQwOTNkNDg5MTE2NDlkZGFlODIyNzZlYWRmZmJiOWUiLCJpZCI6MzE1MDI0NDcsInUiOjQ2NjUxfQ.SvIZlHlCL89en81UUmhqWSvL9ffhOsAODNqjz9TMb38&from=list

王者回答:

  1. https://github.com/freelancer-leon/notes/blob/master/kernel/profiling/perf.md
  2. https://www.mpich.org/downloads/

mpirun –version HYDRA build details: Version: 3.3.2 Release Date: Tue Nov 12 21:23:16 CST 2019