--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/revsetbenchmarks.sh	Fri Mar 14 11:24:59 2014 -0700
@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# Measure the performance of a list of revsets on a range of revisions defined
+# by parameter. Checkout one by one and run perfrevset with every revset in the
+# list to benchmark its performance.
+#
+# First argument is the starting revision to measure performance
+# Second argument the ending revision to measure performance
+# Third argument is the file from which the revset array will be taken 
+#
+# You should run this from the root of your mercurial repository.
+#
+# This script also does one run of the current version of mercurial installed
+# to compare performance.
+
+HG="hg update"
+PERF="./hg perfrevset"
+BASE_PERF="hg perfrevset"
+
+START=$1
+END=$2
+readarray REVSETS < $3
+
+hg update --quiet
+
+echo "Starting time benchmarking"
+echo
+
+echo "Revsets to benchmark"
+echo "----------------------------"
+
+for (( j = 0; j < ${#REVSETS[@]}; j++ ));
+do
+  echo "${j}) ${REVSETS[$j]}"
+done
+
+echo "----------------------------"
+echo
+
+# Benchmark baseline
+echo "Benchmarking baseline"
+
+for (( j = 0; j < ${#REVSETS[@]}; j++ ));
+  do
+    echo -n "${j}) "
+    $BASE_PERF "${REVSETS[$j]}"
+done
+
+echo
+echo
+
+# Benchmark revisions
+for i in $(seq $START $END);
+do
+  echo "----------------------------"
+  echo -n "Revision: "
+  hg log -r $i --template "{desc|firstline}"
+
+  echo "----------------------------"
+  $HG $i
+  for (( j = 0; j < ${#REVSETS[@]}; j++ ));
+  do
+    echo -n "${j}) "
+    $PERF "${REVSETS[$j]}"
+  done
+  echo "----------------------------"
+done
+
+$HG
+
+# Benchmark current code
+echo "Benchmarking current code"
+
+for (( j = 0; j < ${#REVSETS[@]}; j++ ));
+  do
+    echo -n "${j}) "
+    $PERF "${REVSETS[$j]}"
+done
+
+
+echo
+echo "Time benchmarking finished"
+
+