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|
#!/bin/bash
# Compare the processing speed for the shipped
# tools between two bpftrace builds
#
# based on scripts/compare_tool_speed.h
#
set -o pipefail
set -e
set -u
if [[ "$#" -lt 3 ]]; then
echo "Compare tools' speed between two bpftrace builds"
echo ""
echo "USAGE:"
echo "$(basename $0) <bpftrace_A> <bpftrace_B> <tooldir> [<testmode>] [<threshold>]"
echo ""
echo "EXAMPLE:"
echo "$(basename $0) bpftrace bpftrace_master ./tools"
echo ""
echo "NOTE: assume that second bpftrace binary is newer"
exit 1
fi
TOOLDIR=$3
BPF_A=$(command -v "$1") || ( echo "ERROR: $1 not found"; exit 1 )
BPF_B=$(command -v "$2") || ( echo "ERROR: $2 not found"; exit 1 )
[[ -d "$TOOLDIR" ]] || (echo "tooldir does not appear to be a directory: ${TOOLDIR}"; exit 1)
TMPDIR=$(mktemp -d)
[[ $? -ne 0 || -z $TMPDIR ]] && (echo "Failed to create tmp dir"; exit 10)
cd $TMPDIR
set +e
TESTMODE=${4:-codegen}
if [[ $TESTMODE != "codegen" ]]; then
echo invalid testmode: $TESTMODE
exit 20
fi
THRESHOLD=${5:-1}
TIME="/usr/bin/time -f%e --"
FLAGS="--no-warnings --test $TESTMODE"
echo $TESTMODE test
echo "Using version $($BPF_A -V) and $($BPF_B -V)"
MAXLEN=0
for script in ${TOOLDIR}/*.bt; do
s=$(basename ${script/.bt/})
len=${#s}
if [[ "$MAXLEN" -lt "$len" ]]; then
MAXLEN=$len
fi
done
echo -n " script"
for i in `seq 0 1 $((MAXLEN - 6))`; do echo -n ' '; done
echo "A B diff"
for script in ${TOOLDIR}/*.bt; do
s=$(basename ${script/.bt/})
len=${#s}
space=$((MAXLEN - len))
echo -n "Checking $s"
for i in `seq 0 1 $space`; do echo -n ' '; done
a=`$TIME $BPF_A $FLAGS "$script" 3>&1 1>&2 2>&3 3>&-`
b=`$TIME $BPF_B $FLAGS "$script" 3>&1 1>&2 2>&3 3>&-`
if [ $? -ne 0 ]; then
echo "###############################"
echo "bpftrace failed on script: ${s}"
echo "###############################"
continue
fi
d=$(echo $b - $a | bc)
t=$(echo "$d > $THRESHOLD" | bc)
mark=""
if [[ "$t" -eq 1 ]]; then
mark="*"
fi
echo "$a $b $d$mark"
done
[[ -n ${TMPDIR} ]] && rm -rf "${TMPDIR}"
|
