diff --git a/benching/tools/common.sh b/benching/tools/common.sh
new file mode 100755
index 0000000..59a6b88
--- /dev/null
+++ b/benching/tools/common.sh
@@ -0,0 +1,18 @@
+#!/bin/bash
+
+if [ "$#" -lt 1 ] ; then
+    >&2 echo "Missing argument: directory"
+    exit 1
+fi
+
+BENCH_DIR="$(echo $1 | sed 's@/$@@g')"
+ENV_APPLY="$(readlink -f "$(dirname $0)/../../env/apply")"
+
+if ! [ -f "$ENV_APPLY" ] ; then
+    >&2 echo "Cannot find helper scripts. Abort."
+    exit 1
+fi
+
+function status_report {
+    echo -e "\e[33;1m[$BENCH_DIR]\e[0m $1"
+}
diff --git a/benching/tools/errors.sh b/benching/tools/errors.sh
new file mode 100755
index 0000000..f935c47
--- /dev/null
+++ b/benching/tools/errors.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+source "$(dirname $0)/common.sh"
+
+TMP_FILE=$(mktemp)
+
+function get_perf_output {
+    envtype=$1
+    source $ENV_APPLY "$envtype" "dbg"
+    LD_LIBRARY_PATH="$BENCH_DIR/eh_elfs:$LD_LIBRARY_PATH" \
+        UNW_DEBUG_LEVEL=15 \
+        perf report -i "$BENCH_DIR/perf.data" 2>$TMP_FILE >/dev/null
+    deactivate
+}
+
+function count_successes {
+    cat $TMP_FILE | tail -n 1 | sed 's/^.*, \([0-9]*\) calls.*$/\1/g'
+}
+
+function count_total_calls {
+    cat $TMP_FILE | grep -c "^  >.*step:.* returning"
+}
+
+function count_errors {
+    cat $TMP_FILE | grep -c "^  >.*step:.* returning -"
+}
+
+function count_eh_fallbacks {
+    cat $TMP_FILE | grep -c "step:.* falling back"
+}
+
+function count_vanilla_fallbacks {
+    cat $TMP_FILE | grep -c "step:.* frame-chain"
+}
+
+function count_fallbacks_to_dwarf {
+    cat $TMP_FILE | grep -c "step:.* fallback with"
+}
+
+function count_fallbacks_failed {
+    cat $TMP_FILE | grep -c "step:.* dwarf_step also failed"
+}
+
+function report {
+    flavour="$1"
+
+    status_report "$flavour issues distribution"
+
+    successes=$(count_successes)
+    failures=$(count_errors)
+    total=$(count_total_calls)
+
+    if [ "$flavour" = "eh_elf" ]; then
+        fallbacks=$(count_eh_fallbacks)
+        fallbacks_to_dwarf=$(count_fallbacks_to_dwarf)
+        fallbacks_failed=$(count_fallbacks_failed)
+        fallbacks_to_heuristics="$(( $fallbacks \
+            - $fallbacks_to_dwarf \
+            - $fallbacks_failed))"
+        echo -e "* success:\t\t\t\t$successes"
+        echo -e "* fallback to DWARF:\t\t\t$fallbacks_to_dwarf"
+        echo -e "* fallback to libunwind heuristics:\t$fallbacks_to_heuristics"
+        computed_sum=$(( $successes + $fallbacks - $fallbacks_failed + $failures ))
+    else
+        fallbacks=$(count_vanilla_fallbacks)
+        successes=$(( $successes - $fallbacks ))
+        echo -e "* success:\t\t\t\t$successes"
+        echo -e "* fallback to libunwind heuristics:\t$fallbacks"
+        computed_sum=$(( $successes + $fallbacks + $failures ))
+    fi
+    echo -e "* fail to unwind:\t\t\t$failures"
+    echo -e "* total:\t\t\t\t$total"
+    if [ "$computed_sum" -ne "$total" ] ; then
+        echo "-- WARNING: missing cases (computed sum $computed_sum != $total) --"
+    fi
+}
+
+# eh_elf stats
+get_perf_output "eh_elf"
+report "eh_elf"
+
+# Vanilla stats
+get_perf_output "vanilla"
+report "vanilla"
+
+rm "$TMP_FILE"
diff --git a/benching/tools/errors_new.sh b/benching/tools/errors_new.sh
new file mode 100755
index 0000000..f935c47
--- /dev/null
+++ b/benching/tools/errors_new.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+source "$(dirname $0)/common.sh"
+
+TMP_FILE=$(mktemp)
+
+function get_perf_output {
+    envtype=$1
+    source $ENV_APPLY "$envtype" "dbg"
+    LD_LIBRARY_PATH="$BENCH_DIR/eh_elfs:$LD_LIBRARY_PATH" \
+        UNW_DEBUG_LEVEL=15 \
+        perf report -i "$BENCH_DIR/perf.data" 2>$TMP_FILE >/dev/null
+    deactivate
+}
+
+function count_successes {
+    cat $TMP_FILE | tail -n 1 | sed 's/^.*, \([0-9]*\) calls.*$/\1/g'
+}
+
+function count_total_calls {
+    cat $TMP_FILE | grep -c "^  >.*step:.* returning"
+}
+
+function count_errors {
+    cat $TMP_FILE | grep -c "^  >.*step:.* returning -"
+}
+
+function count_eh_fallbacks {
+    cat $TMP_FILE | grep -c "step:.* falling back"
+}
+
+function count_vanilla_fallbacks {
+    cat $TMP_FILE | grep -c "step:.* frame-chain"
+}
+
+function count_fallbacks_to_dwarf {
+    cat $TMP_FILE | grep -c "step:.* fallback with"
+}
+
+function count_fallbacks_failed {
+    cat $TMP_FILE | grep -c "step:.* dwarf_step also failed"
+}
+
+function report {
+    flavour="$1"
+
+    status_report "$flavour issues distribution"
+
+    successes=$(count_successes)
+    failures=$(count_errors)
+    total=$(count_total_calls)
+
+    if [ "$flavour" = "eh_elf" ]; then
+        fallbacks=$(count_eh_fallbacks)
+        fallbacks_to_dwarf=$(count_fallbacks_to_dwarf)
+        fallbacks_failed=$(count_fallbacks_failed)
+        fallbacks_to_heuristics="$(( $fallbacks \
+            - $fallbacks_to_dwarf \
+            - $fallbacks_failed))"
+        echo -e "* success:\t\t\t\t$successes"
+        echo -e "* fallback to DWARF:\t\t\t$fallbacks_to_dwarf"
+        echo -e "* fallback to libunwind heuristics:\t$fallbacks_to_heuristics"
+        computed_sum=$(( $successes + $fallbacks - $fallbacks_failed + $failures ))
+    else
+        fallbacks=$(count_vanilla_fallbacks)
+        successes=$(( $successes - $fallbacks ))
+        echo -e "* success:\t\t\t\t$successes"
+        echo -e "* fallback to libunwind heuristics:\t$fallbacks"
+        computed_sum=$(( $successes + $fallbacks + $failures ))
+    fi
+    echo -e "* fail to unwind:\t\t\t$failures"
+    echo -e "* total:\t\t\t\t$total"
+    if [ "$computed_sum" -ne "$total" ] ; then
+        echo "-- WARNING: missing cases (computed sum $computed_sum != $total) --"
+    fi
+}
+
+# eh_elf stats
+get_perf_output "eh_elf"
+report "eh_elf"
+
+# Vanilla stats
+get_perf_output "vanilla"
+report "vanilla"
+
+rm "$TMP_FILE"
diff --git a/benching/tools/gen_perf_stats.py b/benching/tools/gen_perf_stats.py
index ef8140e..34f42da 100644
--- a/benching/tools/gen_perf_stats.py
+++ b/benching/tools/gen_perf_stats.py
@@ -73,7 +73,7 @@ def get_ratios(avgs):
             avg_of("vanilla"), avg_of("vanilla-nocache")
         )
     else:
-        return avg_of("vanilla-nocache")
+        return avg_of("vanilla")
 
 
 print(
diff --git a/benching/tools/statistics.sh b/benching/tools/statistics.sh
new file mode 100755
index 0000000..67fbdc0
--- /dev/null
+++ b/benching/tools/statistics.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+source "$(dirname $0)/common.sh"
+
+TEMP_DIR="$(mktemp -d)"
+NB_RUNS=10
+
+function collect_perf_time_data {
+    envtype=$1
+    source $ENV_APPLY "$envtype" "release"
+    LD_LIBRARY_PATH="$BENCH_DIR/eh_elfs:$LD_LIBRARY_PATH" \
+        perf report -i "$BENCH_DIR/perf.data" 2>&1 >/dev/null \
+        | tail -n 1 \
+        | python "$(dirname $0)/to_report_fmt.py" \
+        | sed 's/^.* & .* & \([0-9]*\) & .*$/\1/g'
+    deactivate
+}
+
+function collect_perf_time_data_runs {
+    envtype=$1
+    outfile=$2
+    status_report "Collecting $envtype data over $NB_RUNS runs"
+    rm -f "$outfile"
+    for run in $(seq 1 $NB_RUNS); do
+        collect_perf_time_data "$envtype" >> "$outfile"
+    done
+}
+
+eh_elf_data="$TEMP_DIR/eh_elf_times"
+vanilla_data="$TEMP_DIR/vanilla_times"
+
+collect_perf_time_data_runs "eh_elf" "$eh_elf_data"
+collect_perf_time_data_runs "vanilla" "$vanilla_data"
+
+status_report "benchmark statistics"
+python "$(dirname "$0")/gen_perf_stats.py" "$TEMP_DIR"
+
+rm -rf "$TEMP_DIR"