szaydel
5/20/2013 - 4:36 PM

Every 5 seconds print top 15 functions in the fbt:zfs::* probes. This will return a large number of probes. Every 60 seconds we increase our

Every 5 seconds print top 15 functions in the fbt:zfs::* probes. This will return a large number of probes. Every 60 seconds we increase our conter by one, and after 480 iterations (8 hours) we exit. Setting $1 to a number will control the number of iterations allowed.

dtr_zfs_top_15.sh
content_copyfile_download
#!/bin/bash

name=${0/.sh}
user_custom_limit=$1
var_def_limit='480'
var_limit=${user_custom_limit:-${var_def_limit}}
output_log=/root/$name-$(date +"%Y%m%d").log
exec 1> $output_log

dtrace -qn '

inline int INT_limit = '$var_limit';

BEGIN { cnt = 0; }

fbt:zfs::* {
        @[probefunc, probename] = count();
	}

tick-5sec {
	trunc(@, 15); printa("%s %s %@d\n", @); clear(@);
	}

tick-60sec { cnt++ }

tick-60sec / cnt > INT_limit / { exit(0); }' \
    | while read -r line; do printf "%s\t%s\n" "$(date -R| awk '{print $1,$2,$3,$4,$5}')" "$line"; done