Application of Script Ten: I/O read/write process detection

test System version : CentOS 6.4

role: Statistical sequencing of frequent I/O Read and write operations

implementation: Open the logging function, wait for a period of time to do statistics

Demonstrate:

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Code area:

#/bin/bash# ly#------------------# Copyright 2016.04.15 Lingyi ([email protected]) Qq:1519952564trap ' 2tput Civisech O-n Please wait 10s ... echo-ne ' \e[6n ' READ-SDR pospos=${pos#*[}pos= ($ (echo $pos | tr '; ' ")) for ((i=9; i>=0; i--)) do Echo-ne" \033[${pos[0]};$ ((pos[1]+1)) h[$i]\033[0m "Sleep 1done & dmesg-c &> /dev/nullecho 1 >/proc/sys/vm/block_dumpsleep 10ECHODMESG | awk '/(read| write|dirtied)/{process[$1]++} END {for (x in process) print x,process[x]} ' |sort-k 2-nr |head-n 10echo 0 >/proc/s Ys/vm/block_dumptput Cnorm

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Application of Script Ten: I/O read/write process detection