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|
#!/bin/bash
set -euf -o pipefail
scripts=$(dirname $0)
# shellcheck source=jenkins-helpers.sh
. $scripts/jenkins-helpers.sh
# shellcheck source=round-robin.sh
. $scripts/round-robin.sh
convert_args_to_variables "$@"
obligatory_variables rr[ci_project] rr[ci_config]
declare -A rr
# Execution mode: build or bisect
rr[mode]="${rr[mode]-build}"
# Set custom revision for one of the projects, and use baseline revisions
# for all other projects.
rr[baseline_branch]="${rr[baseline_branch]-linaro-local/ci/${rr[ci_project]}/${rr[ci_config]}}"
rr[update_baseline]="${rr[update_baseline]-ignore}"
rr[top_artifacts]="${rr[top_artifacts]-$(pwd)/artifacts}"
# store date of the run
rr[start_date]="$(date +%s)"
# {toolchain_name}-{toolchain_ver}-{target}-{bmk}-{cflags}
IFS=- read -a ci_config <<EOF
${rr[ci_config]}
EOF
rr[toolchain]=${rr[toolchain]-${ci_config[0]}}
rr[target]=${rr[target]-${ci_config[2]}}
benchmarks=("${benchmarks[@]-${ci_config[3]}}")
if [ x"${benchmarks[*]}" = x"default" ]; then
benchmarks=("${ci_config[3]}")
fi
cflags="${cflags--${ci_config[4]}}"
metric_id="${metric_id-cflags}"
gcc_mode=""
case "${rr[target]}:$cflags" in
"arm:"*"mthumb"*) gcc_mode=thumb ;;
"arm:"*"marm"*) gcc_mode=arm ;;
"arm:-Os"*|"arm:-Oz"*)
gcc_mode=thumb
cflags="${cflags}_mthumb"
;;
"arm:"*)
gcc_mode=arm
cflags="${cflags}_marm"
;;
"arm_eabi:"*)
cflags="${cflags}_mthumb"
;;
esac
gcc_override_configure=()
# Set default ARM/Thumb mode for AArch32 compiler. This ensures that libraries
# (Glibc, libgcc, libstdc++, libgfortran, etc.) are built in the "interesting"
# ISA.
case "$gcc_mode" in
arm|thumb) gcc_override_configure+=("--set" "gcc_override_configure=--with-mode=$gcc_mode") ;;
esac
# Disable libsanitizer because it didn't build in April-June 2018.
# We need to test revisions during that time period for performance regressions.
gcc_override_configure+=("--set" "gcc_override_configure=--disable-libsanitizer")
# Build the right libs depending on the target. Hardcode the
# cpu/float-abit/mode to speed up toolchain builds: the alternative of
# building rmprofile multilibs takes a very long time. Setting the
# values here has the drawback that we have to build one toolchain per
# board type.
case "${rr[target]}" in
"arm_eabi") gcc_override_configure+=("--set" "gcc_override_configure=--disable-multilib"
"--set" "gcc_override_configure=--with-cpu=cortex-m4"
"--set" "gcc_override_configure=--with-mode=thumb"
"--set" "gcc_override_configure=--with-float=hard"
) ;;
esac
case "${rr[ci_project]}" in
*experimental_flang_llvm*) build_llvm_flang=true ;;
*) build_llvm_flang=false ;;
esac
case "${rr[toolchain]}" in
llvm)
rr[components]="binutils gcc linux glibc llvm" ;;
gnu)
rr[components]="binutils gcc linux glibc" ;;
gnu_eabi)
rr[components]="binutils gcc newlib" ;;
*) assert_with_msg "Unknown toolchain \"${rr[toolchain]}\"" false ;;
esac
# Use baseline branches by default.
for c in ${rr[components]}; do
rr[${c}_git]=${rr[${c}_git]-baseline}
done
start_at="${start_at-default}"
finish_at="${finish_at-default}"
verbose="${verbose-true}"
verbose2="${verbose2-false}"
if $verbose2; then set -x; fi
trap print_traceback EXIT
# Set start and finish steps for different modes.
default_start_at=""
default_finish_at=""
case "${rr[mode]}" in
"bisect")
single_updated_component="$(print_single_updated_component)"
case $single_updated_component in
binutils) default_start_at="build_abe-binutils" ;;
gcc) default_start_at="build_abe-stage1" ;;
linux|glibc) default_start_at="clean_sysroot" ;;
llvm) default_start_at="build_llvm-true" ;;
newlib) default_start_at="build_abe-newlib" ;;
*) assert_with_msg \
"Invalid single updated component \"$single_updated_component\"" false
;;
esac
;;
esac
if [ x"$start_at" = x"default" ]; then
start_at="$default_start_at"
fi
if [ x"$finish_at" = x"default" ]; then
finish_at="$default_finish_at"
fi
run_step_init "$start_at" "$finish_at" "${rr[top_artifacts]}" "$verbose"
benchmark ()
{
obligatory_variables ssh_host ssh_port
(
set -euf -o pipefail
local bmk_cflags="$2"
local results_id_file="$3"
sanity_check_pwd
# shellcheck disable=SC2115
rm -rf "$(pwd)"/bin
mkdir "$(pwd)"/bin
local bmk_flags bmk_ldflags reboot run_profile bmk_mode
# Use of _VECT in cflags is a historic artefact when we passed special
# flags to generate vectorization data.
#
# TODO: We need to move vectorization $ci_configs to a new $ci_project,
# since there is expected to be few regressions common to both speed
# and vectorization benchmarking.
bmk_flags="$(echo $bmk_cflags | sed -e "s/_VECT//g" -e "s/_/ -/g"\
-e "s/SVE/mcpu=generic+sve/g" -e "s/LTO/flto/g")"
case "${rr[ci_project]}:${rr[ci_config]}}" in
*:*"-Os"*|*:*"-Oz"*)
reboot=false
run_profile="parallel"
bmk_mode="code_size"
;;
*:*"VECT"*|*:*"SVE"*|*fx*:*)
reboot=false
run_profile="parallel"
bmk_mode="code_speed"
;;
*)
reboot=true
run_profile="serial"
bmk_mode="code_speed"
;;
esac
local bench_list bin cc gnu_host gnu_target sysroot toolchain
gnu_host=$(print_gnu_target native)
gnu_target=$(print_gnu_target ${rr[target]})
sysroot="$(pwd)/abe/builds/destdir/$gnu_host/$gnu_target/libc"
case "${rr[toolchain]}" in
llvm)
local llvm_target
llvm_target=$(echo "$gnu_target" | sed -e "s/^arm-/armv7a-/")
bmk_flags="$bmk_flags --target=$llvm_target --sysroot=$sysroot"
bmk_ldflags="$bmk_flags"
# Use LLD for LLVM configurations.
# Also, BFD linker crashes for AArch32 LTO builds,
# see https://projects.linaro.org/browse/LLVM-562 .
case "$bmk_ldflags" in
*"-fuse-ld="*) ;;
*) bmk_ldflags="$bmk_ldflags -fuse-ld=lld" ;;
esac
bin="$(pwd)/llvm-install/bin"
cc="$bin/"
toolchain="llvm"
;;
gnu|gnu_eabi)
bmk_ldflags="$bmk_flags"
bin="$(pwd)/abe/builds/destdir/$gnu_host/bin"
cc="$bin/$gnu_target-"
toolchain="gnu"
# Append -fdump-statistics-asmname to obtain compile time metrics.
bmk_flags="$bmk_flags -fdump-statistics-asmname -fdump-tree-vect-details"
;;
esac
# Benchs to run
case "${rr[ci_project]}:${benchmarks[*]}:$bmk_mode" in
tcwg_bmk_llvm_tx1:*:*)
# Workaround instabilities of 433.milc and 464.h264ref in AArch64
# LLVM speed benchmarking.
# See https://linaro.atlassian.net/browse/LLVM-722
bench_list="400.perlbench 401.bzip2 403.gcc 429.mcf 444.namd 445.gobmk 447.dealII 450.soplex 453.povray 456.hmmer 458.sjeng 462.libquantum 470.lbm 471.omnetpp 473.astar 482.sphinx3 483.xalancbmk"
;;
# experimental for fortran tests
*experimental_flang_llvm*:cpu2017:code_speed) bench_list="spec2017_speed" ;;
*experimental_flang_llvm*:cpu2017:code_size) bench_list="spec2017_rate" ;;
*experimental_flang_llvm*:cpu2017rate:code_speed) bench_list="spec2017_rate" ;;
# gnu_eabi toolchain
*gnu_eabi*:coremark:*) bench_list="coremark" ;;
# gnu toolchain
*gnu*:spec2k6:*) bench_list="all" ;;
*gnu*:cpu2017:code_speed) bench_list="spec2017_speed" ;;
*gnu*:cpu2017:code_size) bench_list="spec2017_rate" ;;
*gnu*:cpu2017rate:code_speed) bench_list="spec2017_rate" ;;
# llvm toolchain
*llvm*:spec2k6:*) bench_list="c_and_cxx" ;;
*llvm*:cpu2017:code_speed) bench_list="spec2017_speed_nofortran" ;;
*llvm*:cpu2017:code_size) bench_list="spec2017_rate_nofortran" ;;
*llvm*:cpu2017rate:code_speed) bench_list="spec2017_rate_nofortran" ;;
*) bench_list="${benchmarks[*]}" ;;
esac
# shellcheck disable=SC2154
sysroot="ssh://$ssh_host:$ssh_port:$sysroot"
local hw_tag
case "${rr[ci_project]}:${rr[target]}" in
*_apm_32*:*) hw_tag=apm_32 ;;
*_apm_64*:*) hw_tag=apm_64 ;;
*_apm*:arm*) hw_tag=apm_32 ;;
*_apm*:aarch64) hw_tag=apm_64 ;;
*_sq_32*:*) hw_tag=sq_32 ;;
*_sq_64*:*) hw_tag=sq_64 ;;
*_sq*:arm*) hw_tag=sq_32 ;;
*_sq*:aarch64) hw_tag=sq_64 ;;
*_tk1_32*:*) hw_tag=tk1_32 ;;
*_tk1*:arm*) hw_tag=tk1_32 ;;
*_tx1_32*:*) hw_tag=tx1_32 ;;
*_tx1_64*:*) hw_tag=tx1_64 ;;
*_tx1*:arm*) hw_tag=tx1_32 ;;
*_tx1*:aarch64) hw_tag=tx1_64 ;;
*_stm32*:arm*) hw_tag=stm32 ;;
*fx_32*:*) hw_tag=fx_32 ;;
*fx_64*:*) hw_tag=fx_64 ;;
*fx*:arm*) hw_tag=fx_32 ;;
*fx*:aarch64) hw_tag=fx_64 ;;
*) echo "ERROR: Unknown hw_tag for ${rr[ci_project]}:${rr[target]}"; exit 1 ;;
esac
local hw image_arch toolchain_proto
toolchain_proto=ssh
case "$hw_tag" in
apm_32) hw=apm; image_arch=armhf ;;
apm_64) hw=apm; image_arch=arm64 ;;
sq_32) hw=sq; image_arch=armhf ;;
sq_64) hw=sq; image_arch=arm64 ;;
tk1_32) hw=tk1; image_arch=armhf ;;
tx1_32) hw=tx1; image_arch=armhf ;;
tx1_64) hw=tx1; image_arch=arm64 ;;
stm32)
hw=stm32; image_arch=amd64
# When running benchmarks on stm32, we prefer to rsync the
# toolchain to the board's host machine -- dev-02.tcwglab.
toolchain_proto=rsync
;;
fx_32) hw=fx; image_arch=armhf ;;
fx_64) hw=fx; image_arch=arm64 ;;
*) echo "ERROR: Unknown hw_tag $hw_tag"; exit 1 ;;
esac
local results_id="$hw_tag/${rr[ci_project]}/${rr[mode]}-${rr[ci_config]}/@build_num@"
# Trigger benchmarking job and capture its console output.
# Ignore exit code of the trigger command to detect various failure
# conditions from examining the console log.
# shellcheck disable=SC2154
remote_exec "ci.linaro.org:2222::-l $USER@linaro.org" \
build tcwg-benchmark -f -v \
-p bmk_hw=$hw \
-p bench_list="$bench_list" \
-p cflags="$bmk_flags" \
-p ldflags="$bmk_ldflags" \
-p testmode=benchmark \
-p displaytag="${rr[ci_project]}/${rr[mode]}-${rr[ci_config]}" \
-p ignore_errors=true \
-p toolchain_url=$toolchain_proto://$ssh_host:$ssh_port:$cc \
-p toolchain_type=$toolchain \
-p sysroot="$sysroot" \
-p results_id="$results_id" \
-p reboot="$reboot" \
-p run_profile="$run_profile" \
-p image_arch="$image_arch" \
${scripts_branch+-p scripts_branch="$scripts_branch"} \
${bmk_branch+-p bmk_branch="$bmk_branch"} \
| tee $run_step_artifacts/benchmark-build.log || true
local build_num
build_num=$(head -n1 $run_step_artifacts/benchmark-build.log \
| sed -e "s/Started.*#\([0-9]\+\).*/\1/")
assert_with_msg "Benchmark build number should not be 0!" \
[ "$build_num" -gt "0" ]
# The "build" output adds "Completed <build>" to the console output.
# Strip this last line.
head -n -1 $run_step_artifacts/benchmark-build.log \
> $run_step_artifacts/benchmark.log
local build_status
local build_ret
while true; do
# Ssh connection to ci.linaro.org occasionally drops. We need
# to check whether benchmarking has finished, and, if not, continue
# to watch its output. We detect that the job has finished if the last
# line of console output is "Finished: <something>".
build_status=$(tail -n 1 $run_step_artifacts/benchmark.log)
case "$build_status" in
"Finished: SUCCESS")
build_ret=0
break
;;
"Finished: "*)
echo "# Benchmarking infra is offline:" >> ${rr[top_artifacts]}/results
echo "-$EXTERNAL_FAIL" >> ${rr[top_artifacts]}/results
build_ret=1
break
;;
esac
# After ci.linaro.org update on 2021-10-11 behavior of console command
# option has changed: before the update it exited immediately for finished builds,
# and after the update "console" hangs indefinitely for finished builds.
# We workaround this by using "timeout 1m".
sleep 300
(timeout 1m \
ssh -p2222 -l $USER@linaro.org ci.linaro.org \
console tcwg-benchmark $build_num || true) \
| tee $run_step_artifacts/benchmark.log
done
echo "$results_id" | sed -e "s/@build_num@/$build_num/g" \
> "$results_id_file"
return $build_ret
)
}
# Compare results obtained from metric data between $1 and $2
# and generate results-vs-prev-compare.csv
compare_results ()
{
(
set -euf -o pipefail
local metric_id="$1"
local first_results_id="$2"
local ref_results_id="$3"
local new_results_id="$4"
local cmp_options="$5"
local results_first results_ref results_new
results_first=$(cat $first_results_id)
results_ref=$(cat $ref_results_id)
results_new=$(cat $new_results_id)
case "${rr[target]}" in
"arm_eabi")
cmp_options="$cmp_options --has_perf_logs no"
;;
esac
# Compare vs first run
$scripts/tcwg-benchmark-results.sh \
--results_ref $results_first ++results $results_new \
--top_artifacts "$run_step_artifacts" --verbose $verbose $cmp_options \
--out_suffix "-vs-first" \
> $run_step_artifacts/results-vs-first.log 2>&1 &
local res
res=0 && wait $! || res=$?
if [ $res != 0 ]; then
return $EXTERNAL_FAIL
fi
# Compare vs previous run
$scripts/tcwg-benchmark-results.sh \
--results_ref $results_ref ++results $results_new \
--top_artifacts "$run_step_artifacts" --verbose $verbose $cmp_options \
--out_suffix "-vs-prev" \
> $run_step_artifacts/results-vs-prev.log 2>&1 &
local res
res=0 && wait $! || res=$?
if [ $res != 0 ]; then
return $EXTERNAL_FAIL
fi
case "$metric_id:$cflags" in
cflags:*"VECT"*) metric_id="vect" ;;
cflags:*"SVE"*) metric_id="sve" ;;
cflags:"-Os"*|cflags:"-Oz"*) metric_id="size" ;;
cflags:*) metric_id="time" ;;
esac
local regressed_by improved_by changed_by exe_threshold symbol_threshold
case $metric_id in
size)
# We use 1% tolerance for binary size
# and 10% tolerance for symbol size.
exe_threshold=1
symbol_threshold=10
regressed_by="grew in size by"
improved_by="reduced in size by"
;;
time)
# We use 3% tolerance for binary speed
# and 15% tolerance for symbol speed.
exe_threshold=3
symbol_threshold=15
# Reduce thresholds when bisecting to avoid considering borderline
# regressions as spurious. This should break cycles of build and
# bisect jobs triggering each other on borderline regressions.
if [ x"${rr[mode]}" = x"bisect" ]; then
exe_threshold=2
symbol_threshold=10
fi
regressed_by="slowed down by"
improved_by="speeds up by"
;;
vect|sve)
exe_threshold=0
symbol_threshold=0
regressed_by="reduced by"
improved_by="increased up by"
;;
*) assert false ;;
esac
local -a arr
local metric bmk symbol rtime rsize rvect rsve time1 time2 size1 size2 vect1 vect2 sve1 sve2
local long_diag short_symbol short_diag
local result prev_bmk
echo "bmk,symbol,result" > $run_step_artifacts/results-vs-prev-compare.csv
printf "extra_build_params=" > $run_step_artifacts/extra-bisect-params
assert_with_msg "Found stale regression files" \
[ x"$(find $run_step_artifacts/ -name "*.regression" | wc -l)" = x"0" ]
# Read result lines from <(tail -n +2 ...) below.
# "-n +2" is to skip the header line.
prev_bmk=""
while IFS=, read -a arr; do
bmk=${arr[0]}
symbol=${arr[1]}
rtime=${arr[2]}
rsize=${arr[3]}
rvect=${arr[4]}
rsve=${arr[5]}
# $arr[6] is used to store rel_symbol_md5sum, ignore it.
time1=${arr[7]}
time2=${arr[8]}
size1=${arr[9]}
size2=${arr[10]}
vect1=${arr[11]}
vect2=${arr[12]}
sve1=${arr[13]}
sve2=${arr[14]}
md5sum1=${arr[15]}
md5sum2=${arr[16]}
case $metric_id in
size) metric=$rsize ;;
time) metric=$rtime ;;
vect) metric=$rvect ;;
sve) metric=$rsve ;;
*) assert false ;;
esac
# We don't want to track regressions on Mean benchmark. Mean variations are
# interesting, but we should never bisect. Don't go furhter in this loop.
if [ "$bmk" == "Mean" ]; then
continue
fi
# Skip processing time metric if md5sums match.
# If either md5sum is -1 or "d41d8...", then it indicates that
# we don't have checksum computed correctly for this symbol,
# and thus continue with comparison.
if [ x"$md5sum1" == x"$md5sum2" ] \
&& [ x"$md5sum1" != x"-1" ] \
&& [ x"$md5sum1" != x"d41d8cd98f00b204e9800998ecf8427e" ] \
&& [ x"$metric_id" == x"time" ] \
&& [ "$metric" != "n/a" ]; then
if (( $metric != 0 )); then
echo "warning: Samples differ for $symbol having same md5sums: $time1, $time2"
fi
echo "SKIPPING $bmk:$symbol because md5sums match" >> $run_step_artifacts/skipped-symbols.txt
# TODO: Fix md5sum processing.
#continue
fi
# Skip case where we have no info ("n/a")
if [ "$metric" != "n/a" ]; then
metric=$(($metric - 100))
# For vect or sve metric, relative value < 100 will be a regression.
# So effectively for any metric, if $metric is positive,
# then it's a regression.
if [ x"$metric_id" = x"vect" ] || [ x"$metric_id" = x"sve" ]; then
metric=$((-$metric))
fi
# Remove padding from the tail of $symbol (padding is added by
# csvs2table.py for better formatting).
short_symbol="$(echo "$symbol" | sed -e "s/ *\$//")"
local bmk_exe
case "$short_symbol" in
"["*) bmk_exe=false ;;
*"_base.default") bmk_exe=true ;;
*) bmk_exe=false ;;
esac
local threshold neg_threshold
if $bmk_exe; then
threshold=$exe_threshold
neg_threshold=$((-exe_threshold))
else
threshold=$symbol_threshold
neg_threshold=$((-symbol_threshold))
fi
if [ "$metric" -gt "$threshold" ] || [ "$metric" -lt "$neg_threshold" ]; then
if [ "$metric" -gt "$threshold" ]; then
change_kind="regression"
changed_by=$regressed_by
else
change_kind="improvement"
changed_by=$improved_by
fi
# There's a regression
result=100
case $metric_id in
size)
short_diag="$changed_by ${metric}%"
long_diag="$short_diag from $size1 to $size2 bytes"
;;
time)
short_diag="$changed_by ${metric}%"
long_diag="$short_diag from $time1 to $time2 perf samples" ;;
vect)
short_diag="$changed_by ${metric}%"
long_diag="$short_diag from $vect1 to $vect2" ;;
sve)
short_diag="$changed_by ${metric}%"
long_diag="$short_diag from $sve1 to $sve2" ;;
*) assert false ;;
esac
if $bmk_exe; then
short_diag="$bmk $short_diag"
long_diag="$bmk $long_diag"
# Detect magic sample counts that indicate failure to build
# and failure to run
case "$time1:$time2" in
888888888:888888888|999999999:999999999)
# Should never happen as we have neither
# an improvement nor a regression.
assert false
;;
*:999999999)
change_kind="regression"
short_diag="$bmk failed to build"
long_diag="$short_diag"
;;
999999999:888888888)
change_kind="improvement"
short_diag="$bmk built OK, but failed to run"
long_diag="$short_diag"
;;
*:888888888)
change_kind="regression"
short_diag="$bmk failed to run"
long_diag="$short_diag"
;;
888888888:*)
change_kind="improvement"
short_diag="$bmk run OK"
long_diag="$short_diag"
;;
999999999:*)
change_kind="improvement"
short_diag="$bmk built and run OK"
long_diag="$short_diag"
;;
esac
echo "$metric,$bmk,$symbol,$short_diag,$long_diag" >> $run_step_artifacts/exe.$change_kind
else
short_diag="$bmk:$short_symbol $short_diag"
long_diag="$bmk:$short_symbol $long_diag"
echo "$metric,$bmk,$symbol,$short_diag,$long_diag" >> $run_step_artifacts/$bmk.symbols-$change_kind
fi
if [ x"$bmk" != x"$prev_bmk" ]; then
printf "++benchmarks %s " $bmk >> $run_step_artifacts/extra-bisect-params
prev_bmk="$bmk"
fi
else
result=1
fi
echo "$bmk,$symbol,$result" >> $run_step_artifacts/results-vs-prev-compare.csv
fi
# Read from results-vs-prev-internal.csv instead of results-vs-prev.csv, because
# the latter may contain commas in demangled symbol names, which will
# interfere with parsing.
done < <(tail -n +2 $run_step_artifacts/results-vs-prev-internal.csv)
printf "\n" >> $run_step_artifacts/extra-bisect-params
# Comparison is done. Below we generate regression report.
cat > $run_step_artifacts/mail-body.txt <<EOF
After \$COMMIT_COMPONENT \$COMMIT_LOG
EOF
# aggregate all *.symbol-regression into a file symbol.regression
find $run_step_artifacts/ -name "*.symbols-regression" -print0 | xargs -0 cat \
| sort -gr -o $run_step_artifacts/symbol.regression
if [ x"$(cat $run_step_artifacts/symbol.regression)" = x"" ]; then
# Delete empty file
rm $run_step_artifacts/symbol.regression
fi
# If there's one regression. Don't bother about improvements.
if [ -f $run_step_artifacts/exe.regression ] || [ -f $run_step_artifacts/symbol.regression ]; then
change_kind=regression
else
change_kind=improvement
fi
if [ -f $run_step_artifacts/exe.$change_kind ]; then
sort -gr -o $run_step_artifacts/exe.$change_kind \
$run_step_artifacts/exe.$change_kind
cat >> $run_step_artifacts/mail-body.txt <<EOF
the following benchmarks $changed_by more than ${exe_threshold}%:
EOF
local exe
while IFS=, read metric exe symbol short_diag long_diag; do
cat >> $run_step_artifacts/mail-body.txt <<EOF
- $long_diag
EOF
if [ -f $run_step_artifacts/$exe.symbols-$change_kind ]; then
while IFS=, read metric bmk symbol short_diag long_diag; do
cat >> $run_step_artifacts/mail-body.txt <<EOF
- $long_diag
EOF
done < $run_step_artifacts/$exe.symbols-$change_kind
# Delete $bmk.regressions so that it doesn't show up
# in symbol-regression loop below.
rm $run_step_artifacts/$exe.symbols-$change_kind
fi
done < $run_step_artifacts/exe.$change_kind
fi
if [ -f $run_step_artifacts/symbol.$change_kind ]; then
cat >> $run_step_artifacts/mail-body.txt <<EOF
the following hot functions $regressed_by more than ${symbol_threshold}% (but their benchmarks $regressed_by less than ${exe_threshold}%):
EOF
while IFS=, read metric bmk symbol short_diag long_diag; do
cat >> $run_step_artifacts/mail-body.txt <<EOF
- $long_diag
EOF
done < $run_step_artifacts/symbol.$change_kind
fi
# Put change summary into jira-body.txt.
cp $run_step_artifacts/mail-body.txt $run_step_artifacts/jira-body.txt
local bmk_suite="" publish_save_temps=false
case "${benchmarks[*]}" in
coremark) bmk_suite="EEMBC CoreMark" ;;
spec2k6|4*)
bmk_suite="SPEC CPU2006"
publish_save_temps=true
;;
spec2017|5*|6*)
bmk_suite="SPEC CPU2017"
publish_save_temps=true
;;
esac
cat >> $run_step_artifacts/mail-body.txt <<EOF
Below reproducer instructions can be used to re-build both "first_bad" and "last_good" cross-toolchains used in this bisection. Naturally, the scripts will fail when triggerring benchmarking jobs if you don\'t have access to Linaro TCWG CI.
EOF
# Copy save-temps tarballs to artifacts, so that they are accessible.
# We can publish pre-processed source only for benchmarks derived from
# open-source projects.
# Note that we include save-temps artifacts for successful builds so that
# "last_good" build has the artifacts.
if $publish_save_temps; then
mkdir -p $run_step_artifacts/top-artifacts
local s_t
while read s_t; do
rsync -a "$s_t/" $run_step_artifacts/top-artifacts/save-temps/
done < <(find results-1 -type d -name "save.*.temps")
fi
if [ -d $run_step_artifacts/top-artifacts/save-temps/ ]; then
cat >> $run_step_artifacts/mail-body.txt <<EOF
For your convenience, we have uploaded tarballs with pre-processed source and assembly files at:
- First_bad save-temps: \$FIRST_BAD_ARTIFACTS/save-temps/
- Last_good save-temps: \$LAST_GOOD_ARTIFACTS/save-temps/
- Baseline save-temps: \$BASELINE_ARTIFACTS/save-temps/
EOF
fi
local compiler="" libc="" linker="" version="" target="" bmk_flags="" hw=""
case "${rr[toolchain]}" in
gnu)
compiler="GCC"
libc="Glibc"
linker="GNU Linker"
;;
gnu_eabi)
compiler="GCC"
libc="Newlib"
linker="GNU LD"
;;
llvm)
compiler="Clang"
libc="Glibc"
linker="LLVM Linker"
;;
esac
case "${rr[ci_config]}" in
*-master-*) version="tip of trunk" ;;
*-release-*) version="latest release branch" ;;
esac
target=$(print_gnu_target ${rr[target]})
bmk_flags=$(echo "$cflags" | sed -e "s/_/ -/g" -e "s/LTO/flto/g" \
-e "s/VECT/fdump-tree-vect-details/g")
case "${rr[ci_project]}" in
*_apm*) hw="APM Mustang 8x X-Gene1" ;;
*_tk1*) hw="NVidia TK1 4x Cortex-A15" ;;
*_tx1*) hw="NVidia TX1 4x Cortex-A57" ;;
*_stm32*) hw="STMicroelectronics STM32L476RGTx 1x Cortex-M4" ;;
esac
cat >> $run_step_artifacts/mail-body.txt <<EOF
Configuration:
- Benchmark: $bmk_suite
- Toolchain: $compiler + $libc + $linker
- Version: all components were built from their $version
- Target: $target
- Compiler flags: $bmk_flags
- Hardware: $hw
This benchmarking CI is work-in-progress, and we welcome feedback and suggestions at linaro-toolchain@lists.linaro.org . In our improvement plans is to add support for SPEC CPU2017 benchmarks and provide "perf report/annotate" data behind these reports.
EOF
# Generate mail subject
if [ -f $run_step_artifacts/exe.$change_kind ]; then
IFS=, read metric bmk symbol short_diag long_diag \
< <(head -n1 $run_step_artifacts/exe.$change_kind)
elif [ -f $run_step_artifacts/symbol.$change_kind ]; then
IFS=, read metric bmk symbol short_diag long_diag \
< <(head -n1 $run_step_artifacts/symbol.$change_kind)
else
short_diag="No change"
fi
cat > $run_step_artifacts/mail-subject.txt <<EOF
[TCWG CI] $short_diag after \$COMMIT_COMPONENT: \$COMMIT_SUBJECT
EOF
# no_regression_p() uses results.regressions to judge whether there
# was a regression. Generate results.regressions only on regression.
if [ x"$change_kind" = x"regression" ]; then
cat $run_step_artifacts/jira-body.txt \
| sed -e "s/^/# /" > $run_step_artifacts/results.regressions
echo "# $short_diag" >> $run_step_artifacts/results.regressions
fi
)
}
# Exit with code 0 if no regression compared to base-artifacts/.
# Inspect build results ./results and performance results in ./results_id.
no_regression_p ()
{
(
set -euf -o pipefail
no_build_regression_p "$@"
local ref_artifacts=$1
local new_artifacts=$2
# We always want to generate a comparison metrics (results-vs-prev-brief.csv),
# In case of a first run (update_baseline=init). we choosed to compare
# the obtained results against itself
if ! [ -f "$ref_artifacts/results_id" ] && [ -f "$new_artifacts/results_id" ]; then
# This case can happen in update_baseline="init" mode. Otherwise, there's a pb !
assert_with_msg "Expecting a ref_artifact with a results_id file" \
[ "${rr[update_baseline]}" == "init" ]
ref_artifacts=$new_artifacts
fi
# Create the first run reference results_id file
if [ "${rr[update_baseline]}" == "init" ]; then
cp $new_artifacts/results_id "$new_artifacts/results_id.first"
elif [ -f "$ref_artifacts/results_id.first" ]; then
cp "$ref_artifacts/results_id.first" "$new_artifacts/results_id.first"
elif [ -d $ref_artifacts/.git/ ]; then
# For existing branches, we need to retrieve the first results_id. Afterwards, it
# can be removed, as results_id.first will be propagated from baseline to artifacts.
local first_rev
first_rev=$(git -C $ref_artifacts log --pretty=%h HEAD |tail -1)
git -C $ref_artifacts show $first_rev:results_id > "$new_artifacts/results_id.first"
else
assert_with_msg "Cannot determine first run reference" false
fi
# Make sure there is no stray results.regression file, which we use
# as failure marker.
# We can, potentially, call ${rr[no_regression_p]} several times in
# a row during update_baseline() step, but we should stop at the first
# regression. Therefore, we should never see results.regressions exist.
assert ! [ -f $run_step_artifacts/results.regressions ]
local compare_opts=""
case "$cflags" in
*"_LTO"*) compare_opts="--num_symbols 0 --entry_threshold 10" ;;
esac
compare_results "$metric_id" \
"$new_artifacts/results_id.first" "$ref_artifacts/results_id" "$new_artifacts/results_id" \
"$compare_opts"
if [ -f $run_step_artifacts/results.regressions ]; then
assert_with_msg "Found a regression while comparing the build against itself" \
[ "$ref_artifacts" != "$new_artifacts" ]
return 1
fi
return 0
)
}
# Implement rr[breakup_changed_components] hook.
tcwg_bmk_breakup_changed_components ()
{
(
set -euf -o pipefail
# Compiler changes tend to cause the most regressions.
# Breakup updated components into compiler and the rest of components
# to reduce the number of builds.
local cc
case "${rr[toolchain]}" in
llvm) cc="llvm" ;;
gnu|gnu_eabi) cc="gcc" ;;
*) assert false ;;
esac
if print_changed_components "\n" | grep -q "^$cc\$"; then
echo "$cc"
print_changed_components "\n" | grep -v "^$cc\$" | tr '\n' ' ' | sed -e "s/ \$//g"
echo
else
print_changed_components "\n"
fi
)
}
rr[breakup_changed_components]=tcwg_bmk_breakup_changed_components
run_step stop_on_fail -10 reset_artifacts
run_step stop_on_fail x prepare_abe
run_step skip_on_fail -9 build_abe binutils
run_step skip_on_fail -8 build_abe stage1 -- "${gcc_override_configure[@]}"
run_step skip_on_fail x clean_sysroot
case "${rr[components]}" in
*glibc*)
run_step skip_on_fail -7 build_abe linux
run_step skip_on_fail -6 build_abe glibc
;;
*newlib*)
run_step skip_on_fail -6 build_abe newlib
;;
esac
run_step skip_on_fail -5 build_abe stage2 -- "${gcc_override_configure[@]}"
case "${rr[toolchain]}" in
llvm) run_step skip_on_fail -3 build_llvm true $build_llvm_flang "" ;;
esac
run_step skip_on_fail 1 benchmark -- "$cflags" ${rr[top_artifacts]}/results_id
run_step reset_on_fail x check_regression
run_step stop_on_fail x update_baseline
trap "" EXIT
|