Get Perf statistics over multiple run and show it in column format

perf_stats.sh

#!/bin/bash

OUTFILE=perf_out.txt
rm perf*.txt
for((i=0;i<4;i++)); do
    #timeout -s SIGINT 12 perf stat -e dTLB-loads -e cs,cycles,instructions -D 2000 -a -o perf$i.txt
    #timeout -s SIGINT 12 perf stat -e dTLB-stores -e cs,cycles,instructions -D 2000 -a -o perf$i.txt
    #timeout -s SIGINT 12 perf stat -e dTLB-load-misses,dTLB-store-misses -e cs,cycles,instructions -D 2000 -a -o perf$i.txt

    timeout -s SIGINT 12 perf stat -e cs,cycles,instructions -D 2000 -a -o perf$i.txt

    #timeout -s SIGINT 12 perf stat -e cs,cycles,instructions -e cache-misses,cache-references -D 2000 -a -o perf$i.txt
    #timeout -s SIGINT 12 perf stat -e cs,cycles,instructions -e branches,branch-misses -D 2000 -a -o perf$i.txt
    #timeout -s SIGINT 12 perf stat -e cs,cycles,instructions -e bus-cycles,ref-cycles -D 2000 -a -o perf$i.txt

    #timeout -s SIGINT 12 perf stat -e cycles -e cpu/event=0x08,umask=0x10,name=dcycles/ -e cpu/event=0x85,umask=0x10,name=icycles/ -D 2000 -a -o perf$i.txt

    #timeout -s SIGINT 12 perf stat -e cache-misses -e cpu/event=0xbc,umask=0x18,name=dreads/ -e cpu/event=0xbc,umask=0x28,name=ireads/ -D 2000 -a -o perf$i.txt
    cat perf$i.txt
    [[ $i -eq 0 ]] && tail -n +6 perf$i.txt | head -n -3 | tr -s ' ' | cut -d ' ' -f 3 | paste -s -d ' ' > $OUTFILE
    tail -n +6 perf$i.txt | head -n -3 | tr -s ' ' | cut -d ' ' -f 2 | paste -s -d ' ' >> $OUTFILE
    sleep 1
done

column -s ' ' -t $OUTFILE