diff --git a/scripts/run-setc-bench.sh b/scripts/run-setc-bench.sh
new file mode 100755
index 0000000..9ed224a
--- /dev/null
+++ b/scripts/run-setc-bench.sh
@@ -0,0 +1,312 @@
+#!/bin/bash
+set -euo pipefail
+export LC_ALL=C
+
+# Настройки.
+SETC_DIR="$HOME/setc"
+WORK_ROOT="$HOME/setc-bench"
+RESULT_DIR="$HOME/res"
+RUNS=3
+CPU=0
+RESET_WORK=1  # 0 — продолжить готовые сборки, 1 — начать всё заново.
+PACKAGER='krosh <gudovdo@my.msu.ru>'
+APT_SOURCE=/etc/apt/sources.list.d/alt.list
+APT_GET=/usr/lib/apt/apt-get
+RPM_BUILD_GIT=https://git.altlinux.org/gears/r/rpm-build.git
+RPM_GIT=https://git.altlinux.org/gears/r/rpm.git
+
+fail()
+{
+    printf 'error: %s\n' "$*" >&2
+    exit 1
+}
+
+prepare_spec()
+{
+    local spec=$1 suffix=$2 version release new_release date
+
+    version=$(sed -n 's/^Version:[[:space:]]*//p' "$spec" | sed -n '1p')
+    release=$(sed -n 's/^Release:[[:space:]]*//p' "$spec" | sed -n '1p')
+    [[ -n $version && -n $release ]] || fail "cannot read Version/Release from $spec"
+
+    new_release="$release.$suffix"
+    sed -i "0,/^Release:[[:space:]]*$release$/s//Release: $new_release/" "$spec"
+
+    date=$(date '+%a %b %d %Y')
+    sed -i "/^%changelog/a\\
+* $date $PACKAGER $version-$new_release\\
+- Local set.c benchmark build.\\
+" "$spec"
+}
+
+apt_options()
+{
+    local root=$1
+
+    APT_OPTIONS=(
+        -o 'Dir::Etc::main=-'
+        -o 'Dir::Etc::parts=-'
+        -o "Dir::Etc::sourcelist=$COMMON/sources.list"
+        -o "Dir::Etc::sourceparts=$COMMON/sources.list.d"
+        -o 'Dir::Etc::preferences=-'
+        -o 'Dir::Etc::preferencesparts=-'
+        -o "Dir::State::lists=$COMMON/lists/"
+        -o "Dir::State::status=$COMMON/status"
+        -o "Dir::Cache=$COMMON/cache/"
+        -o "Dir::Cache::archives=$COMMON/cache/archives"
+        -o "Dir::Cache::pkgcache=$COMMON/cache/pkgcache.bin"
+        -o "Dir::Cache::srcpkgcache=$COMMON/cache/srcpkgcache.bin"
+        -o "RPM::RootDir=$root"
+    )
+}
+
+operation_args()
+{
+    case $1 in
+        check) ARGS=(-s check) ;;
+        autoremove) ARGS=(-s autoremove) ;;
+        install-rpm-build) ARGS=(-s install rpm-build) ;;
+        install-openuds-server) ARGS=(-s install openuds-server) ;;
+        install-password-store) ARGS=(-s install password-store) ;;
+        upgrade) ARGS=(-o APT::Get::EnableUpgrade=true -s upgrade) ;;
+        dist-upgrade) ARGS=(-s dist-upgrade) ;;
+        *) fail "unknown operation: $1" ;;
+    esac
+}
+
+operation_label()
+{
+    case $1 in
+        check) printf '%s' '-s check' ;;
+        autoremove) printf '%s' '-s autoremove' ;;
+        install-rpm-build) printf '%s' '-s install rpm-build' ;;
+        install-openuds-server) printf '%s' '-s install openuds-server' ;;
+        install-password-store) printf '%s' '-s install password-store' ;;
+        upgrade) printf '%s' '--enable-upgrade -s upgrade' ;;
+        dist-upgrade) printf '%s' '-s dist-upgrade' ;;
+    esac
+}
+
+run_once()
+{
+    local operation=$1 variant=$2 run=$3 start end status
+    local libdir="$variant/lib/usr/lib64"
+    local root="$COMMON/root"
+    local raw="$variant/raw"
+
+    operation_args "$operation"
+    apt_options "$root"
+
+    start=$(date +%s%N)
+    if env LC_ALL=C APT_CONFIG="$COMMON/apt.conf" \
+        LD_LIBRARY_PATH="$libdir" \
+        taskset -c "$CPU" "$APT_GET" -q \
+        "${APT_OPTIONS[@]}" "${ARGS[@]}" \
+        >"$raw/$operation.$run.stdout" \
+        2>"$raw/$operation.$run.stderr"; then
+        status=0
+    else
+        status=$?
+    fi
+    end=$(date +%s%N)
+
+    RUN_TIME=$(awk -v start="$start" -v end="$end" \
+        'BEGIN { printf "%.6f", (end - start) / 1000000000 }')
+    RUN_STATUS=$status
+}
+
+benchmark_variant()
+{
+    local variant=$1 result=$2 operation run average label status_text
+    local -a times statuses
+    local -a operations=(
+        check
+        autoremove
+        install-rpm-build
+        install-openuds-server
+        install-password-store
+        upgrade
+        dist-upgrade
+    )
+
+    mkdir -p "$variant/raw"
+    printf 'command\taverage_seconds\trun1_seconds\trun2_seconds\trun3_seconds\texit_status\n' \
+        >"$result"
+
+    for operation in "${operations[@]}"; do
+        times=()
+        statuses=()
+
+        for ((run = 1; run <= RUNS; ++run)); do
+            run_once "$operation" "$variant" "$run"
+            times+=("$RUN_TIME")
+            statuses+=("$RUN_STATUS")
+            printf '%s: run %d/%d: %ss, status=%s\n' \
+                "$operation" "$run" "$RUNS" "$RUN_TIME" "$RUN_STATUS"
+        done
+
+        average=$(printf '%s\n' "${times[@]}" | \
+            awk '{ total += $1 } END { printf "%.6f", total / NR }')
+
+        status_text=${statuses[0]}
+        for status in "${statuses[@]}"; do
+            if [[ $status != "$status_text" ]]; then
+                status_text=$(IFS=,; printf 'mixed:%s' "${statuses[*]}")
+                break
+            fi
+        done
+
+        label=$(operation_label "$operation")
+        printf '%s\t%s\t%s\t%s\t%s\t%s\n' \
+            "$label" "$average" \
+            "${times[0]}" "${times[1]}" "${times[2]}" "$status_text" \
+            >>"$result"
+    done
+}
+
+for command in git gear-hsh hsh rpm rpmquery rpm2cpio cpio apt-get apt-cache \
+    taskset awk sed date sha256sum ldd; do
+    command -v "$command" >/dev/null || fail "required command not found: $command"
+done
+[[ -x $APT_GET ]] || fail "not found: $APT_GET"
+[[ $RUNS -eq 3 ]] || fail 'RUNS must stay equal to 3 for the TSV format below'
+
+shopt -s nullglob
+setc_files=("$SETC_DIR"/*.c)
+((${#setc_files[@]} > 0)) || fail "no .c files in $SETC_DIR"
+
+if ((RESET_WORK)); then
+    # После прерванной сборки часть chroot принадлежит hasher-псевдопользователю;
+    # обычный rm её не удалит.
+    old_hashers=("$WORK_ROOT"/variants/*/hasher)
+    for old_hasher in "${old_hashers[@]}"; do
+        [[ -d $old_hasher ]] || continue
+        hsh --cleanup-only --workdir="$old_hasher" >/dev/null 2>&1 || true
+    done
+    rm -rf "$WORK_ROOT"
+fi
+mkdir -p "$WORK_ROOT/src" "$WORK_ROOT/variants" "$RESULT_DIR"
+COMMON="$WORK_ROOT/common"
+if [[ ! -s $COMMON/cache/pkgcache.bin ]]; then
+    rm -rf "$COMMON"
+    mkdir -p \
+        "$COMMON/lists/partial" \
+        "$COMMON/cache/archives/partial" \
+        "$COMMON/sources.list.d" \
+        "$COMMON/root/var/lib/rpm"
+    : >"$COMMON/apt.conf"
+    : >"$COMMON/status"
+
+    # Один официальный p11 snapshot без hasher/stuff. Он создаётся до сборок
+    # и затем одинаково используется всеми вариантами.
+    awk '$1 == "rpm" && /p11\/branch/ && $0 !~ /(hasher|stuff)/ { print }' \
+        "$APT_SOURCE" >"$COMMON/sources.list"
+    [[ -s $COMMON/sources.list ]] || fail "no p11 sources in $APT_SOURCE"
+
+    cp -a /var/lib/rpm/. "$COMMON/root/var/lib/rpm/"
+    apt_options "$COMMON/root"
+    APT_CONFIG="$COMMON/apt.conf" apt-get -qq "${APT_OPTIONS[@]}" update
+    APT_CONFIG="$COMMON/apt.conf" apt-cache -q "${APT_OPTIONS[@]}" gencaches >/dev/null
+    sha256sum "$COMMON/cache/pkgcache.bin" "$COMMON/cache/srcpkgcache.bin" \
+        >"$COMMON/cache.sha256"
+fi
+
+# Чистые p11 gear-деревья клонируются один раз.
+if [[ ! -d $WORK_ROOT/src/rpm-build-base/.git ]]; then
+    git clone --branch p11 --single-branch "$RPM_BUILD_GIT" \
+        "$WORK_ROOT/src/rpm-build-base"
+fi
+if [[ ! -d $WORK_ROOT/src/rpm-base/.git ]]; then
+    git clone --branch p11 --single-branch "$RPM_GIT" \
+        "$WORK_ROOT/src/rpm-base"
+fi
+
+index=0
+for setc in "${setc_files[@]}"; do
+    index=$((index + 1))
+    id=$(printf 'v%03d' "$index")
+    suffix="setc$id"
+    filename=$(basename "$setc")
+    result_name=${filename%.c}.tsv
+    variant="$WORK_ROOT/variants/$id"
+    source="$variant/src"
+    hasher="$variant/hasher"
+    repo="$hasher/repo/x86_64/RPMS.hasher"
+
+    printf '\n===== %s: %s =====\n' "$id" "$filename"
+    mkdir -p "$source" "$hasher" "$variant/logs" "$variant/lib"
+
+    if [[ ! -d $source/rpm-build/.git ]]; then
+        git clone --local "$WORK_ROOT/src/rpm-build-base" "$source/rpm-build"
+        git clone --local "$WORK_ROOT/src/rpm-base" "$source/rpm"
+
+        # По условию один и тот же входной файл кладётся как lib/set.c в оба пакета.
+        cp "$setc" "$source/rpm-build/lib/set.c"
+        cp "$setc" "$source/rpm/lib/set.c"
+
+        prepare_spec "$source/rpm-build/rpm-4_0.spec" "$suffix"
+        prepare_spec "$source/rpm/alt/rpm.spec" "$suffix"
+    else
+        cmp -s "$setc" "$source/rpm-build/lib/set.c" && \
+            cmp -s "$setc" "$source/rpm/lib/set.c" || \
+            fail "$filename changed; set RESET_WORK=1 and restart"
+    fi
+
+    rpm_build_rpms=("$repo"/rpm-build-[0-9]*".$suffix".x86_64.rpm)
+    if ((${#rpm_build_rpms[@]} == 0)); then
+        (
+            cd "$source/rpm-build"
+            gear-hsh \
+                --commit \
+                --with-stuff \
+                --packager="$PACKAGER" \
+                --no-sisyphus-check=changelog,packager,gpg \
+                --mountpoints=/proc \
+                --workdir="$hasher" \
+                --target=x86_64
+        ) 2>&1 | tee "$variant/logs/rpm-build.log"
+    else
+        printf 'rpm-build already built: %s\n' "${rpm_build_rpms[0]}"
+    fi
+
+    librpm_rpms=("$repo"/librpm7-[0-9]*".$suffix".x86_64.rpm)
+    if ((${#librpm_rpms[@]} == 0)); then
+        (
+            cd "$source/rpm"
+            gear-hsh \
+                --commit \
+                --with-stuff \
+                --packager="$PACKAGER" \
+                --no-sisyphus-check=changelog,packager,gpg \
+                --mountpoints=/proc \
+                --workdir="$hasher" \
+                --target=x86_64
+        ) 2>&1 | tee "$variant/logs/rpm.log"
+    else
+        printf 'rpm/librpm7 already built: %s\n' "${librpm_rpms[0]}"
+    fi
+
+    # [0-9]* исключает отдельный пакет librpm7-debuginfo.
+    librpm_rpms=("$repo"/librpm7-[0-9]*".$suffix".x86_64.rpm)
+    ((${#librpm_rpms[@]} == 1)) || \
+        fail "expected one librpm7 package for $filename, got ${#librpm_rpms[@]}"
+
+    rm -rf "$variant/lib"
+    mkdir -p "$variant/lib"
+    (
+        cd "$variant/lib"
+        rpm2cpio "${librpm_rpms[0]}" | cpio -idm --quiet
+    )
+
+    libdir="$variant/lib/usr/lib64"
+    [[ -e $libdir/librpm.so.7 && -e $libdir/librpmio.so.7 ]] || \
+        fail "librpm libraries were not extracted for $filename"
+    LD_LIBRARY_PATH="$libdir" ldd "$APT_GET" | \
+        grep -F "$libdir/librpm.so.7" >/dev/null || \
+        fail "apt-get does not load the built librpm for $filename"
+
+    benchmark_variant "$variant" "$RESULT_DIR/$result_name"
+done
+
+printf '\nResults:\n'
+printf '  %s\n' "$RESULT_DIR"/*.tsv