From b2087ba800937e357a94ff7491cefae15e5198ef Mon Sep 17 00:00:00 2001
From: cos <cos>
Date: Tue, 1 Dec 2020 22:36:49 +0100
Subject: Add code to measure time and memory consumption

---
 bin/measure_mem.sh  | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 bin/measure_time.sh | 40 +++++++++++++++++++++++++++++++++
 2 files changed, 104 insertions(+)
 create mode 100755 bin/measure_mem.sh
 create mode 100755 bin/measure_time.sh

(limited to 'bin')

diff --git a/bin/measure_mem.sh b/bin/measure_mem.sh
new file mode 100755
index 0000000..9839815
--- /dev/null
+++ b/bin/measure_mem.sh
@@ -0,0 +1,64 @@
+#!/bin/sh -e
+
+YEAR="${YEAR:-$(date +%Y)}"
+DAY="${DAY:-$(TZ=EST date '+%d')}"
+IMPL="${IMPL:-rust}"
+PARTS="${AOC_PARTS:-1 2}"
+
+ITERS="${ITERS:-10}"
+MODE="${MODE:-valgrind}"
+
+cd "${YEAR}/${IMPL}/day${DAY}"
+case "${IMPL}" in
+  'rust')
+    cargo build --release
+    EXECUTABLE="../target/release/day${DAY}"
+    ;;
+  *)
+    echo "Unknown implementation: ${IMPL}" >&2
+    exit
+    ;;
+esac
+
+# https://stackoverflow.com/q/774556/peak-memory-usage-of-a--process
+for PART in $(echo ${PARTS})
+do
+  export AOC_PARTS="${PART}"
+
+  OUT="memmax-${YEAR}-${IMPL}-${DAY}-${PART}.txt"
+  case "${MODE}" in
+    'valgrind')
+      valgrind --tool=massif --pages-as-heap=yes \
+          --massif-out-file=massif.out \
+          "${EXECUTABLE}" "${@}"
+      grep mem_heap_B massif.out | \
+          sed -e 's/mem_heap_B=\(.*\)/\1/' | sort -g | tail -n 1 \
+          >"${OUT}"
+      MEM=$(cat "${OUT}")
+      printf "${YEAR}-${IMPL}-${DAY}-${PART}: MEM: ${MEM} %dk %dM\n" \
+          $(( MEM / 1024 )) $(( MEM / 1024 / 1024 ))
+      ;;
+    'time')
+      # %X The average amount in (shared) text space used in kilobytes.
+      # %D The average amount in (unshared) data/stack space used in kilobytes.
+      # %K The total space used (%X+%D) in kilobytes.
+      # %M The maximum memory the process had in use at any time in kilobytes.
+      export TIMEFMT='%M'
+      for I in $(seq "${ITERS}"); do
+        zsh -c time "${EXECUTABLE}" "${@}" 2>&1 >/dev/null | tail -1
+      done >"${OUT}"
+
+      ALL_MEMORY_USAGES="$(cat "${OUT}" )"
+      NO_OF_ITERS=$(echo "${ALL_MEMORY_USAGES}" | wc -l)
+      ARITHM="$(echo "( ${ALL_MEMORY_USAGES}" | tr '\n' '+'; \
+          echo "0 ) / ${NO_OF_ITERS}" )"
+      MEAN_MEMORY=$(( $(echo ${ARITHM}) ))
+
+      echo "${YEAR}-${IMPL}-${DAY}-${PART}: Mean: ${MEAN_MEMORY}kB"
+      echo "${YEAR}-${IMPL}-${DAY}-${PART}: Mean: ${MEAN_MEMORY}kB" >>"${OUT}"
+      ;;
+    *)
+      echo "Unkown mode ${MODE}" >&2
+      ;;
+  esac
+done
diff --git a/bin/measure_time.sh b/bin/measure_time.sh
new file mode 100755
index 0000000..d308b19
--- /dev/null
+++ b/bin/measure_time.sh
@@ -0,0 +1,40 @@
+#!/bin/sh -e
+
+YEAR="${YEAR:-$(date +%Y)}"
+DAY="${DAY:-$(TZ=EST date '+%d')}"
+IMPL="${IMPL:-rust}"
+PARTS="${AOC_PARTS:-1 2}"
+
+ITERS="${ITERS:-10}"
+
+cd "${YEAR}/${IMPL}/day${DAY}"
+case "${IMPL}" in
+  'rust')
+    cargo build --release
+    EXECUTABLE="../target/release/day${DAY}"
+    ;;
+  *)
+    echo "Unknown implementation: ${IMPL}" >&2
+    exit
+    ;;
+esac
+
+for PART in $(echo ${PARTS})
+do
+  export AOC_PARTS="${PART}"
+  OUT="time-${YEAR}-${IMPL}-${DAY}-${PART}.txt"
+
+  export TIMEFMT='%uE'
+  for I in $(seq "${ITERS}"); do
+    zsh -c time "${EXECUTABLE}" "${@}" 2>&1 >/dev/null | tail -1
+  done >"${OUT}"
+  
+  ALL_TIMINGS="$(cat "${OUT}" | sed 's/us/ + /' )"
+  NO_OF_ITERS=$(echo "${ALL_TIMINGS}" | wc -l)
+  ARITHM="$(echo "( ${ALL_TIMINGS}" | tr -d '\n'; \
+      echo "0 ) / ${NO_OF_ITERS}" )"
+  MEAN_TIMING=$(( $(echo ${ARITHM}) ))
+
+  printf "${YEAR}-${IMPL}-${DAY}-${PART}: Mean: ${MEAN_TIMING}µs\n"
+  printf "${YEAR}-${IMPL}-${DAY}-${PART}: Mean: ${MEAN_TIMING}µs\n" >>"${OUT}"
+done
-- 
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