Add measurement of peak memory usage

1 files changed, 28 insertions, 0 deletions

diff --git a/2019/rust/mem-measure_most.sh b/2019/rust/mem-measure_most.sh
new file mode 100755
index 0000000..b7dd4a2
--- /dev/null
+++ b/2019/rust/mem-measure_most.sh
@@ -0,0 +1,28 @@
+#!/bin/zsh -e
+
+for DIR in day*
+do
+  cd "${DIR}"
+  cargo build --release
+
+  if [ -e part_one.sh ]; then
+    PARTS="part_one.sh part_two.sh"
+  else
+    PARTS="both_parts.sh"
+  fi
+
+  # https://stackoverflow.com/q/774556/peak-memory-usage-of-a--process
+  for PART in `echo ${PARTS}`
+  do
+    OUT="${PART%*.sh}"
+    OUT="${OUT#*_}.txt"
+    VG="valgrind --tool=massif --pages-as-heap=yes \
+            --massif-out-file=massif.out" \
+        ./${PART}; grep mem_heap_B massif.out | \
+        sed -e 's/mem_heap_B=\(.*\)/\1/' | sort -g | tail -n 1 \
+        > "memmax-${OUT}"
+    MEM=`cat "memmax-${OUT}"`
+    echo ${DIR} MEM: ${MEM} $[ MEM / 1024. ]k $[ MEM /1024./1024 ]M
+  done
+  cd ..
+done