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#!/bin/sh
# From https://reviews.freebsd.org/D17011
[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
cd /tmp
kldstat -v | grep -q hwpmc || { kldload hwpmc; loaded=1; }
pmcstat -S unhalted_core_cycles -O ppid.pmcstat sleep 10
pmcstat -R ppid.pmcstat -z100 -G ppid.stacks
[ $loaded ] && kldunload hwpmc
rm -f ppid.pmcstat ppid.stacks
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