Linux中追蹤記憶體

  1. 追蹤特定User的特定Process： 
    #!/bin/sh
output_folder="./MemoryTracing"
if [ ! -d $output_folder ]
then
  mkdir  $output_folder
fi

file="$output_folder/$(date '+%y%m%d').txt"
rm $file
while true
do
  now=$(date '+%H:%M:%S.%3N')
  top=$(echo -n $(top -b -n 1 | grep -E '{User Name}.*{Process Name}'))
  if [ -n "$top" ] 
  then
    echo "${now} ${top}" >> $file
  fi
  sleep 0.05
done
  2. 追蹤System全體的CPU和Memory消耗： 
    #!/bin/sh
output_folder="./SystemTracing"
if [ ! -d $output_folder ]
then
  mkdir  $output_folder
fi

file="$output_folder/$(date '+%y%m%d').txt"
rm $file

user_name="{User Name}"
main_process="{Main Process Name}"
other_processes=("{Other Process Name 1}" "{Other Process Name 1}" ...)
filter="${user_name}.*${main_process}"
main_filter=$filter
for i in "${other_processes[@]}"
do
  filter=${filter}"|${user_name}.*${i}" # 作為grep命令的PATTERNS - 「|」的左右不可有空格
done

while true
do
  now=$(date '+%H:%M:%S.%3N')
  top=$(echo -n $(top -b -n 1 | grep -E "${filter}"))
  
  if [ -n "$top" ]
  then
  	pos=0
  	cpu=0; virt=0; res=0;
  	while true
  	do
  	  if [ ! -n "$(echo ${top} | cut -d' ' -f $(($pos+1)))" ]
  	  then
  	  	break
  	  fi
  	  
  	  cpu_now=$(echo ${top} | cut -d' ' -f $(($pos+9)))
    cpu=$(awk 'BEGIN{printf "%.2f\n",('${cpu}'+'${cpu_now}')}') # 小數點運算加法: ans=$(awk 'BEGIN{printf "%.2f\n",('$a'+'$b')}')
    virt_now=$(echo ${top} | cut -d' ' -f $((${pos}+5)))
    virt=$((${virt}+${virt_now}))
    res_now=$(echo ${top} | cut -d' ' -f $((${pos}+6)))
    res=$((${res}+${res_now}))
  	
  	  pos=$(($pos+12)) # 整數運算加法: ans=$(($a+$b))
  	done
  
  	echo "${now} ${cpu} ${virt} ${res}"
  	echo "${now} ${cpu} ${virt} ${res}" >> $file
  fi
  
  sleep 0.05
done

     

Last Updated on 2023/08/16 by A1go

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